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This study aimed to analyze the prognostic value of the SOFA, APACHE II, and MPI (Mannheim Peritonitis Index) scores in the indication for Damage Control Surgery (DCS) in non-trauma. Retrospective analysis of patients undergoing DCS between 2014 and 2019. SOFA and APACHE II scores were calculated using parameters preceding DCS, while MPI was based on surgical descriptions. Statistical analysis: Qualitative variables were compared using the Chi-square test or Fisher's exact test, and quantitative variables using Pearson's correlation coefficient. The Student's T test was employed for mean comparisons. The sample comprised 104 patients (59 males), with a median age of 63.5 years, of whom 52 (50%) were ASA IV. Operative findings leading to DCS included peritonitis (54; 51.9%), intestinal ischemia (39; 37.5%), inability to close the abdomen (8; 7.6%), and bleeding (3; 2.9%). The mortality rate was 75% (78/104). Thirty patients (28.8%) died after DCS; the remainder underwent one (35; 33.6%), two (21; 20.2%); three (8; 7.7%), and four or more (10;9.7%) revision procedures. The median lengths of ICU and hospital stays were 12.5 and 20.5 days, respectively. The median score values were as follows: SOFA: 12 (0-38), APACHE II: 25 (2-47), and MPI: 26 (8-43). Besides ASA classification (p = 0.03), mortality risk was influenced by: age (≤ 65 years vs. > 65 years; p = 0.04), SOFA (≤ 10 vs. > 10; p = 0.03), APACHE II (≤ 25 vs. > 25; p = 0.04), and MPI (≤ 25 vs. > 25; p = 0.003). The SOFA, APACHE II, and MPI scores proved to be valuable tools in the prognostic assessment of patients undergoing DCS in non-traumatic abdominal emergencies.

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OBJECTIVE: To evaluate the predictive ability of mortality prediction scales in cancer patients admitted to intensive care units (ICUs). DESIGN: A systematic review of the literature was conducted using a search algorithm in October 2022. The following databases were searched: PubMed, Scopus, Virtual Health Library (BVS), and Medrxiv. The risk of bias was assessed using the QUADAS-2 scale. SETTING: ICUs admitting cancer patients. PARTICIPANTS: Studies that included adult patients with an active cancer diagnosis who were admitted to the ICU. INTERVENTIONS: Integrative study without interventions. MAIN VARIABLES OF INTEREST: Mortality prediction, standardized mortality, discrimination, and calibration. RESULTS: Seven mortality risk prediction models were analyzed in cancer patients in the ICU. Most models (APACHE II, APACHE IV, SOFA, SAPS-II, SAPS-III, and MPM II) underestimated mortality, while the ICMM overestimated it. The APACHE II had the SMR (Standardized Mortality Ratio) value closest to 1, suggesting a better prognostic ability compared to the other models. CONCLUSIONS: Predicting mortality in ICU cancer patients remains an intricate challenge due to the lack of a definitive superior model and the inherent limitations of available prediction tools. For evidence-based informed clinical decision-making, it is crucial to consider the healthcare team's familiarity with each tool and its inherent limitations. Developing novel instruments or conducting large-scale validation studies is essential to enhance prediction accuracy and optimize patient care in this population.

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INTRODUCTION: Intensive Care Units (ICUs) pose challenges in managing critically-ill patients with polypharmacy, potentially leading to Adverse Drug Reactions (ADRs), particularly in the elderly. OBJECTIVE: To evaluate whether the severity and clinical prognosis scores used in ICUs correlate with the prediction of ADRs in aged patients admitted to an ICU. METHODS: A cohort study was conducted in a Brazilian University Hospital ICU. APACHE II and SAPS 3 assessed clinical prognosis, while GerontoNet ADR Risk Score and BADRI evaluated ADR risk at ICU admission. Severity of the patients' clinical conditions was evaluated daily based on the SOFA score. Adverse Drug Reaction (ADR) screening was performed daily through the identification of ADR triggers. RESULTS: 1295 triggers were identified (median 30 per patient, IQR = 28), with 15 suspected ADRs. No correlation was observed between patient severity and ADRs at admission (p=0.26), during hospitalization (p=0.91), or at follow-up (p=0.77). There was also no association between death and ADRs (p=0.28) or worse prognosis and ADRs (p>0.05). Higher BADRI scores correlated with more ADRs (p=0.001). CONCLUSIONS: The data suggest that employing the severity and clinical prognosis scores used in Intensive Care Units is not sufficient to direct active pharmacovigilance efforts, which are therefore indicated for critically ill patients.

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INTRODUCTION: Intensive care units (ICUs) pose challenges in managing critically ill patients with polypharmacy, potentially leading to adverse drug reactions (ADRs), particularly in the elderly. OBJECTIVE: To evaluate whether the severity and clinical prognosis scores used in ICUs correlate with the prediction of ADRs in aged patients admitted to an ICU. METHODS: A cohort study was conducted in a Brazilian University Hospital ICU. APACHE II and SAPS 3 assessed clinical prognosis, while GerontoNet ADR Risk Score and BADRI evaluated ADR risk at ICU admission. Severity of the patients' clinical conditions was evaluated daily based on the SOFA score. ADR screening was performed daily through the identification of ADR triggers. RESULTS: 1295 triggers were identified (median 30 per patient, IQR=28), with 15 suspected ADRs. No correlation was observed between patient severity and ADRs at admission (p=0.26), during hospitalization (p=0.91), or at follow-up (p=0.77). There was also no association between death and ADRs (p=0.28) or worse prognosis and ADRs (p>0.05). Higher BADRI scores correlated with more ADRs (p=0.001). CONCLUSIONS: These data suggest that employing the severity and clinical prognosis scores used in ICUs is not sufficient to direct active pharmacovigilance efforts, which are therefore indicated for critically ill patients.

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Objetivo: Relacionar las complicaciones y el riesgo de muerte en pacientes neurocríticos admitidos en la unidad de cuidados intensivos (UCI) del Hospital Universitario de Caracas durante un período de 5 meses. Métodos: investigación observacional, prospectiva, descriptiva. La muestra estuvo conformada por 65 pacientes neurocríticos, ≥ 18 años, con patologías médicas o quirúrgicas, ingresados en la UCI. El análisis estadístico incluyó la determinación de frecuencias, promedios, porcentajes y medias para descripción de variables y el T de Student. Resultados: La edad promedio fue 50,98 ± 16,66 años; la población masculinarepresentó el 50,76%. Entre las complicaciones, la mayor incidencia correspondió a las no infecciosas (70,77 %) y los trastornos ácido-básicos de tipo metabólico, la anemia y las alteraciones electrolíticas fueron las más frecuentes; el 29,23% de los pacientes presentaron complicaciones infecciosas, y la neumonía asociada a ventilación mecánica fue la más frecuente (73,91 %). La comorbilidad con mayor incidencia fue hipertensión arterial sistémica (53,84%). El 90.70% requirió ventilación mecánica y el tiempo en VM fue 4.29 ± 6.43 días. La estancia en UCI fue 5.96 ± 7.72 días. El 29,23% presentó un puntaje en la escala APACHE II entre 5-9; el SAPS II presentó mayor incidencia entre los 6-21 y 22-37 puntos con (66,70%); el SOFA al ingreso se reportó < 15 puntos en 98,46% y > 15 en 1,53%. La mortalidad del grupo fue 23,08 % (n=15). Conclusiones: Las complicaciones no infecciosas predominaron sobre las infecciosas las primeras íntimamente relacionadas con la mortalida(AU)

Objective: To relate complications and the risk of death in neurocritical patients admitted to the intensive care unit (ICU) of the University Hospital of Caracas during a period of 5 months. Methods: observational, prospective, descriptive research. The sample was made up of 65 neurocritical patients, ≥ 18 years old, with medical or surgical pathologies, admitted to the ICU.The statistical analysis included the determination of frequencies, averages, percentages and meansfor description of variables and Student's T.Results: The average age was 50.98 ± 16.66 years; the male population represented 50.76%. Among the complications, the highest incidence corresponded to non-infectious complications (70.77%) and metabolic acid-base disorders, anemia and electrolyte alterations were the most frequent; 29.23% of patients presented infectious complications, and pneumonia associated with mechanical ventilation was the most frequent (73.91%). The comorbidity with the highest incidence was systemic arterial hypertension (53.84%), 90.70% required mechanical ventilation and the time on MV was 4.29 ± 6.43 days. The ICU stay was 5.96 ± 7.72 days. 29.23% had a score on the APACHE II scale between 5-9; SAPS II presented the highest incidence between 6-21 and 22-37 points with (66.70%); The SOFA upon admission was reported to be < 15 points in 98.46% and > 15 in 1.53%. The mortality of the group was 23.08% (n=15). Conclusions: Non-infectious complications predominated over infectious complications, the former being closely related to mortalit(AU)

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SUMMARY INTRODUCTION: Improving survival is the objective of intensive care units. Various factors affect long-term outcomes. The objective was to explore survival and the associated factors 1 year after admission to the intensive care unit. METHOD: This is an observational, descriptive, and analytical study in a retrospective cohort of adults admitted to an intensive care unit at a regional hospital during the first semester of 2022. Records of 218 patients from an anonymized database were analyzed. RESULTS: The average age was 61 years, and the average APACHE II score was 15 points (24% expected mortality). Survival 1 year after admission was 57.8%. Factors associated with 1-year survival in the Cox regression model were age and APACHE II. The univariate analysis showed that the cancer was significantly associated with lethality after 1 year (OR 10.55; 95%CI 1.99-55.76). CONCLUSION: One-year survival after intensive care unit decreases by 16.1%. Factors that significantly reduced survival were old age, severity, and oncologic cause at admission.

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The present work describes the development of a conceptual representation model of the domain of the theory of formal grammars and abstract machines through ontological modeling. The main goal is to develop an ontology capable of deriving new knowledge about the mood of an Alzheimer's patient in the categories of wandering, nervous, depressed, disoriented or bored. The patients are from elderly care centers in Ambato Canton-Ecuador. The population consists of 147 individuals of both sexes, diagnosed with Alzheimer's disease, with ages ranging from 75 to 89 years. The methods used are the taxonomic levels, the semantic categories and the ontological primitives. All these aspects allow the computational generation of an ontological structure, in addition to the use of the proprietary tool Pellet Reasoner as well as Apache NetBeans from Java for process completion. As a result, an ontological model is generated using its instances and Pellet Reasoner to identify the expected effect. It is noted that the ontologies come from the artificial intelligence domain. In this case, they are represented by aspects of real-world context that relate to common vocabularies for humans and applications working in a domain or area of interest.

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OBJECTIVE: Provide a description of clinical characteristics, associated factors and outcome of tracheostomies performed in COVID-19 patients. METHOD: Observational prospective study of 14 patients who underwent tracheostomy. 10 of them were diagnosed with COVID 19, confirmed with RT-PCR test of nasopharyngeal exudate and compatible tomographic findings. RESULTS: Of the 10 patients, five were discharged and five died. The average age of patients who died was 66.6 years; of those who were discharged, it was 60.4 years. Ventilatory parameters cut was taken as FiO2 ≤ 40% and PEEP ≤ 8; of the patients discharged, four met both criteria. On the other hand, of the patients who died, neither met both. Of the latter, an average of APACHE II of 16.4 and SOFA 7.4 were documented, while in discharged patients an average of 12.6 and 4.6 were observed, respectively. CONCLUSIONS: Tracheostomy performed in patients with specific criteria, such as low ventilatory parameters, age, or low score in severity scales, may have a better prognosis.

OBJETIVO: Realizar una descripción de las características clínicas, los factores asociados y el desenlace de las traqueostomías realizadas en pacientes con COVID-19. MÉTODO: Estudio retrospectivo observacional de 14 pacientes a quienes se realizó traqueostomía. Diez de ellos se encontraban diagnosticados con COVID-19, confirmada con prueba RT-PCR de exudado nasofaríngeo y hallazgos tomográficos compatibles. RESULTADOS: De los 10 pacientes, cinco fueron dados de alta y cinco fallecieron. La edad promedio de los pacientes que fallecieron fue de 66.6 años, y la de los que fueron dados de alta fue de 60.4 años. De los parámetros ventilatorios, se tomó como corte una FiO2 ≤ 40% y una PEEP ≤ 8; entre los pacientes dados de alta, cuatro cumplían con ambos criterios. En cambio, de los pacientes que fallecieron, ninguno los cumplió. En estos últimos se documentó un promedio de APACHE II de 16.4 y un SOFA de 7.4, mientras que en los pacientes dados de alta se observó un promedio de 12.6 y 4.6, respectivamente. CONCLUSIONES: La traqueostomía realizada en pacientes con criterios específicos, como parámetros ventilatorios bajos, edad o puntuación baja en las escalas de gravedad, pueden llegar a tener mejor pronóstico.

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Introducción: La hipoalbuminemia se puede desarrollar en las primeras horas posteriores a una enfermedad aguda y está muy relacionada con un estado inflamatorio activo, independientemente del estado nutricional del paciente. Se ha asociado con la mortalidad hospitalaria en pacientes con complicaciones postquirúrgicas, pacientes con sepsis y trauma. Objetivo: Evaluar la asociación entre los niveles de hipoalbuminemia y el riesgo de mortalidad del paciente crítico en una unidad polivalente. Métodos: Estudio observacional, descriptivo, prospectivo, de serie de casos, con 216 pacientes que ingresaron en la unidad. Se analizaron variables demográficas, clínicas, de laboratorio y se aplicó el índice pronóstico APACHE II. Se determinó la concentración de albúmina al ingreso y se clasificó la hipoalbuminemia en leve (30-35 g/L) y moderada/grave (≤ 30 g/L). Resultados: En el estudio fallecieron 28 pacientes, lo que representó un 13 % del total de pacientes ingresados. La albúmina presentó niveles bajos en 118 pacientes (54,6 %), y de estos, 66 (56 %) presentaron cifras inferiores a los 30 g/L; o sea, una hipoalbuminemia moderada o grave. Los pacientes con hipoalbuminemia moderada-grave tuvieron un riesgo de muerte superior (23,5 %) a aquellos con niveles clasificados como leve (15,3 %), diferencia estadísticamente significativa (p= 0,034); y en el grupo de pacientes con hipoalbuminemia moderada- grave falleció el 67 %, en relación con el 33 % de los pacientes con niveles clasificados como leve. Conclusiones: La hipoalbuminemia moderada-grave se asocia con el riesgo de mortalidad, independientemente del diagnóstico al ingreso.

Introduction: Hypoalbuminemia can develop in the first hours after an acute illness, and is closely related to an active inflammatory state, regardless of the patient's nutritional status. It has been associated with hospital mortality in patients with post-surgical complications, patients with sepsis and trauma. Objective: To evaluate the association between hypoalbuminemia level and the risk of mortality in critically ill patients in a polyvalent unit. Methods: Observational, descriptive, prospective, case series study, with 216 patients admitted to the unit. Demographic, clinical, and laboratory variables were analyzed and the APACHE II prognostic score was applied. Albumin concentration is calculated on admission and hypoalbuminemia is classified as mild (30-35 g/L) and moderate/severe (≤ 30 g/L). Results: In the study, 28 patients died, which represented 13% of the total number of patients admitted. Albumin levels were low in 118 patients (54.6%), and of these 66 patients (56%) were classified as hypoalbuminemia moderate/severe, with albumin values below 30 g/L. Patients with moderate-severe hypoalbuminemia had a higher risk of death (23.5%) than those patients with levels classified as mild (15.3%), a statistically significant difference (p= 0.034); and in the group of patients with moderate-severe hypoalbuminemia, 67% died, in relation to 33% of patients with levels classified as mild. Conclusions: Moderate-severe hypoalbuminemia is associated with mortality risk, regardless of admission diagnosis.

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ABSTRACT BACKGROUND: Clinical features and outcomes of patients admitted to the intensive care unit due to acute abdomen are important to be investigated. AIMS: To evaluate the outcomes of critically ill subjects with acute abdomen according to etiology, comorbidity and severity. METHODS: Outcomes of 1,523 patients (878 women, mean age 66±18 years) consecutively admitted to a specialized gastrointestinal intensive care unit with different causes of acute abdomen from January 2012 to December 2019, were retrospectively evaluated according to etiology, comorbidity and severity. RESULTS: The most common causes of acute abdomen were obstructive and inflammatory, particularly large bowel obstruction (27%), small bowel obstruction (18%) and acute pancreatitis (17%). Overall mortality was 13%. Surgery was required in 34% of patients. Median length of stay in the hospital was 9 [1-101] days. On univariate analysis mortality was significantly associated with age, APACHE II, Charlson comorbidity index, requirement for surgery and malignancy (p<0.0001), but only APACHE II, Charlson comorbidity index and surgical interventional remained significant on multivariate analysis. CONCLUSIONS: Critically ill patients admitted to the intensive care unit with acute abdomen constitute a heterogeneous group of subjects with different prognosis. Mortality is more related to the severity of the disease, comorbidity and need for surgery than to the etiology of the acute abdomen.

RESUMO RACIONAL: As características clínicas e os desfechos dos pacientes internados na unidade de terapia intensiva devido ao abdômen agudo são importantes serem investigados. OBJETIVOS: Avaliar os desfechos de indivíduos gravemente doentes com abdômen agudo de acordo com etiologia, gravidade e comorbidade. MÉTODOS: Os desfechos de 1.523 pacientes (878 mulheres, média de idade 66±18 anos) que foram previamente admitidos em uma unidade de terapia intensiva especializada em doenças gastrointestinais, com diferentes causas de abdômen agudo entre janeiro de 2012 e dezembro de 2019, foram avaliados retrospectivamente segundo etiologia, comorbidade e gravidade. RESULTADOS: As causas mais comuns de abdômen agudo foram obstrutivas e inflamatórias, com destaque para obstrução em colon (27%), em intestino delgado (18%) e pancreatite aguda (17%). A mortalidade geral foi de 13%. A cirurgia foi necessária em 34%. A média de permanência no hospital foi de 9 [1-101] dias. Na análise univariada a mortalidade foi significativamente associada à idade, APACHE II, índice de comorbidade de Charlson, necessidade de abordagem cirúrgica e presença de malignidade (p<0,0001), mas apenas APACHE II, índice de comorbidade de Charlson e intervenção cirúrgica permaneceram significativos na análise multivariada. CONCLUSÕES: Pacientes internados na unidade de terapia intensiva com abdômen agudo constituem um grupo heterogêneo de indivíduos com prognóstico diferente. A mortalidade está mais relacionada com a gravidade da doença, comorbidade e necessidade de cirurgia do que com a etiologia do abdome agudo.

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Resumen: Se ha propuesto el uso de la escala nutritional risk in the critically ill (NUTRIC) como una herramienta para la valoración nutricional en el paciente crítico. Una de las principales desventajas es que dicha escala no considera variables críticas en la determinación de desnutrición como el desgaste muscular. El objetivo del presente estudio es evaluar la importancia del músculo valorado por ultrasonido del recto femoral y vasto intermedio, en conjunto con el riesgo nutricional por la escala NUTRIC en los resultados clínicos de pacientes críticamente enfermos. Se realizó ultrasonido muscular dentro de las primeras 48 horas de ingreso a pacientes adultos. A su vez se calculó el riesgo nutricional con la escala NUTRIC, y se dio seguimiento detectando mortalidad hospitalaria. Se incluyeron 43 pacientes, 21 presentaron riesgo nutricional (48.8%) sin mostrar diferencia en el grosor muscular. En el modelo de regresión ajustado por la escala NUTRIC, ventilación mecánica mayor de 48 horas, índice de masa corporal y grosor muscular, este último se mostró como un factor protector de mortalidad (OR: 0.21, IC 95%: 0.03-0.83). El presente estudio resalta la necesidad de una valoración integral considerando la masa muscular como variable cardinal en la detección de desnutrición en pacientes críticamente enfermos.

Abstract: Nutritional Risk in the critically ill score, it has been used like tool to asses nutritional state in critically ill patient. A mayor limitation of this score is that not include important variables in the assessment of malnutrition, like muscular wasting. The main goal of this study is to evaluate the relevance of the muscle, by measuring the femoral quadriceps, along with NUTRIC score of critically ill patients results. An ultrasound in the first 48 hours of admission to ICU was made plus NUTRIC score and a follow up detecting in-hospital mortality. We included 43 patients, with 21 with nutritional risk (48.8%) showing no difference in muscular thickness. The NUTRIC score adjusted regression model, mechanical ventilation longer than 48 hours, body weight index and muscular thickness. The muscular thickness shows as mortality protector factor (OR: 0.21, 95% CI: 0.03-0.83). This study remarks the need for integral assessment considering muscular mass as a main variable in the malnutrition detection in critically ill patients.

Resumo: A utilização da escala de Nutritional Risk in the Critically Ill tem sido proposta como uma ferramenta para avaliação nutricional em pacientes em estado crítico. Uma das principais desvantagens é que esta escala não considera variáveis críticas na determinação da desnutrição, como a perda de massa muscular. O objetivo do presente estudo é avaliar a importância do músculo, avaliado por ultrassom do reto femoral e vasto intermediário, em conjunto com o risco nutricional por NUTRIC score nos resultados clínicos de pacientes em estado crítico. O ultrassom muscular foi realizado nas primeiras 48 horas de internação em pacientes adultos. Paralelamente, calculou-se o risco nutricional pelo NUTRIC, bem como o seguimento detectando a mortalidade hospitalar. Incluíram-se 43 pacientes, 21 apresentando risco nutricional (48.8%) sem diferença na espessura muscular. No modelo de regressão ajustado pelo NUTRIC, ventilação mecânica maior a 48 horas, índice de massa corporal e espessura muscular, esta última se mostrou fator protetor para mortalidade (OR: 0.21, IC 95%: 0.03-0.83). Este estudo destaca a necessidade de uma avaliação abrangente considerando a massa muscular como uma variável cardinal na detecção de desnutrição em pacientes em estado crítico.

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Resumen Introducción: El SARS-CoV-2 representa la primera causa de mortalidad actual en la población mexicana, a nivel global se han acumulado 1'919,126 defunciones. Las regiones con más muertes son América (47%) y Europa (33%). Hasta la semana 2 del año 2021 en México se estimaban 1'541,633 casos, siendo la Ciudad de México la entidad más afectada; hasta ese momento se habían registrado 18,443 fallecimientos, con una necesidad hospitalaria de 80% y con alta demanda de hospitalización en el servicio de Unidad de Cuidados Intensivos (UCI). Por esta razón, surge la necesidad de nuevos marcadores tempranos de severidad y pronóstico. Objetivo: Correlacionar el delta de ácido úrico (DAU) con la mortalidad en pacientes con SARS-CoV-2 tratados en la UCI, así como su relación con otras variables de severidad. Material y métodos: Se realizó un estudio longitudinal en una UCI con 71 pacientes; las variables de estudio fueron: demográficas, comorbilidades, días de estancia en la UCI, días de ventilación mecánica (VM), escala predictora de mortalidad, ácido úrico inicial y ácido úrico final, DAU; desenlace: mortalidad. Resultados: De los participantes, 69% fueron varones, 31% mujeres, edad promedio de 54.35 años (± 10.28), ácido úrico al ingreso de 3.9 mg/dL (± 1.74), ácido úrico al egreso de 2.89 mg/dL (± 1.70), delta de ácido úrico promedio de 1.077 mg/dL (± 1.59), APACHE II al ingreso de 18.35 puntos (± 9.04) y al egreso de 22.95 puntos (± 19.68), mortalidad global de 50.7%, de los cuales 78.67% requirió ventilación mecánica y 21.12% no la requirió. La correlación de Spearman para DAU y mortalidad fue r = -0.34, el índice de determinación r2 = 0.13, con significancia p = 0.004, (IC) 95%. Conclusiones: Se demostró la correlación entre el DAU con la mortalidad de los pacientes con SARS-CoV-2 con adecuada significancia estadística a un intervalo de corte de 1-1.5 mg/dL y una mortalidad de 50.7%. Adicionalmente, se demostró que dicho intervalo tuvo correlación con el inicio de la ventilación mecánica. Se identificó que sí existe relación entre la puntuación de APACHE II y la mortalidad por SARS-CoV-2; para este estudio un puntaje mayor a 18 demostró la mejor significancia estadística.

Abstract Introduction: SARS-CoV-2 represents the first cause of current mortality in the Mexican population, globally it has accumulated 1'919,126 deaths. The regions with the most deaths are America (47%), Europe (33%). Until week two of 2021 in Mexico, 1'541,633 cases were estimated, with Mexico City being the most affected entity, until that moment 18,443 deaths had been registered, with a hospital need of 80%, and with a high demand for hospitalization in the service of Intensive Care Unit (ICU). For this reason, the need arises for new early markers of severity and prognosis. Objective: To correlate the uric acid delta (DAU) with mortality in patients with SARS-CoV-2 treated in the ICU, as well as its relationship with other variables of severity. Material and methods: A longitudinal study was carried out in the ICU with 71 patients and study variables: demographic, comorbidities, days of ICU stay, days of mechanical ventilation (MV), predictive mortality scale, initial uric acid and final uric acid, DAU; outcome: mortality. Results: Of the participants, 69% were men, 31% women, mean age of 54.35 years (± 10.28), uric acid at admission of 3.9 mg/dL (± 1.74), uric acid at discharge of 2.89 mg/dL (± 1.70), mean uric acid delta of 1.077 mg/dL (± 1.59 mg/dL), APACHE II at entry of 18.35 points (± 9.04) at discharge of 22.95 points (± 19.68), global mortality of 50.7%, of which 78.67% required mechanical ventilation (MV) and 21.12% did not require. The Spearman correlation for DAU and mortality was r = -0.34, the determination index r2 = 0.13, with significance p = 0.004, (CI) 95%. Conclusions: The correlation between the DAU with the mortality of the patients with SARS-CoV-2 was demonstrated with adequate statistical significance at a cut-off interval of 1-1.5 mg/dL, and a mortality of 50.7%. Additionally, it was shown that said interval had a correlation with the start of mechanical ventilation. It was identified that if there is a relationship between the APACHE II score and SARS-CoV-2 mortality, for this study a score greater than 18 demonstrated the best statistical significance.

Resumo Introdução: O SARS-CoV-2 representa a primeira causa de mortalidade atual na população mexicana, globalmente acumulou 1.919.126 mortes. As regiões com mais mortes são América (47%), Europa (33%). Até a semana 2 de 2021 no México, foram estimados 1.541.633 casos, sendo a Cidade do México a entidade mais afetada, até então foram registrados 18.443 óbitos, com necessidade hospitalar de 80% e com alta demanda de internação no serviço de emergência Unidade de Terapia Intensiva (UTI). Por esta razão, há necessidade de novos marcadores precoces de gravidade e prognóstico. Objetivo: Correlacionar o delta do ácido úrico (DAC) com a mortalidade em pacientes com SARS-CoV-2 atendidos na UTI, bem como sua relação com outras variáveis de gravidade. Material e métodos: Realizou-se um estudo longitudinal na UTI com 71 pacientes e variáveis de estudo: demografia, comorbidades, dias de internação na UTI, dias de ventilação mecânica (VM), escala preditiva de mortalidade, ácido úrico inicial e ácido úrico final, DAC; resultado: mortalidade. Resultados: Dos participantes, 69% eram homens, 31% mulheres, idade média 54.35 anos (± 10.28), ácido úrico na admissão 3.9 mg/dL (± 1.74), ácido úrico na alta 2.89 mg/dL (± 1.70), delta de ácido úrico médio de 1.077 mg/dL (± 1.59 mg/dL), APACHE II na admissão de 18.35 pontos (± 9.04) na alta de 22.95 pontos (± 19.68), mortalidade geral de 50.7%, dos quais 78.67% necessitaram de ventilação mecânica (VM) e 21.12% não necessitaram. A correlação de Spearman para DAU e mortalidade foi r = -0.34, o índice de determinação r2 = 0.13, com significância p = 0.004, (IC) 95%. Conclusões: Demonstrou-se a correlação entre o DAU com a mortalidade de pacientes com SARS-CoV-2 com adequada significância estatística no intervalo de corte de 1-1.5 mg/dL e mortalidade de 50.7%. Além disso, foi demonstrado que esse intervalo se correlacionou com o início da ventilação mecânica. Identificou-se que existe relação entre o escore APACHE II e a mortalidade por SARS-CoV-2, para este estudo um escore maior que 18 apresentou a melhor significância estatística.

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RESUMEN Introducción: La pancreatitis es la inflamación del páncreas exocrino, resultado del daño a las células acinares. Sus características clínicas principales son el dolor abdominal y la elevación de los niveles séricos de amilasa y lipasa. La evolución es muy variable, desde una recuperación completa de un primer episodio, hasta una enfermedad crónica debilitante, o la muerte. Objetivos: Caracterizar a los pacientes ingresados en la unidad de cuidados intensivos, con el diagnóstico de pancreatitis aguda y evaluarlos según los criterios de gravedad. Métodos: Se realizó un estudio descriptivo en el que se revisaron 46 historias clínicas de pacientes ingresados con diagnóstico de pancreatitis aguda en la unidad de terapia intensiva polivalente, desde enero del 2014 a diciembre del 2019. Se confeccionó una base de datos con las variables edad, etiología, complicaciones, letalidad y la aplicación de escalas de Ranson, APACHE II y Balthazar-Hill, para evaluar evolutivamente la gravedad y pronóstico. Se hizo un análisis de frecuencias de dichas variables. Resultados: La edad de mayor incidencia correspondió a los grupos menores de 61 años, con predominio del sexo masculino. La causa más frecuente fue la litiasis vesicular y el alcoholismo, para un 43,4 % y 34,7 % respectivamente. El 47,8 % presentó la forma leve de la enfermedad. La letalidad fue del 21,7 %. Conclusiones: Son más frecuentes las formas graves de la enfermedad; la insuficiencia renal aguda y la insuficiencia respiratoria aguda son las complicaciones más representativas.

ABSTRACT Introduction: Pancreatitis is the inflammation of the exocrine pancreas, as a result of damage to the acinar cells. Its main clinical features are abdominal pain and elevated serum levels of amylase and lipase. The evolution is very variable, from a complete recovery from a first episode, to a debilitating chronic disease, or death. Objectives: To characterize patients admitted to the intensive care unit with a diagnosis of acute pancreatitis and to evaluate them according to severity criteria. Methods: A descriptive study was carried out in which 46 medical records of patients admitted with a diagnosis of acute pancreatitis in the multipurpose intensive care unit were reviewed, from January 2014 to December 2019. A database was created with the variables age, etiology, complications, lethality and the application of the Ranson, APACHE II and Balthazar-Hill scales, to evaluate severity and prognosis. An analysis of the frequencies of these variables was carried out. Results: The age with the highest incidence corresponded to groups under 61 years of age, with a predominance of males. The most frequent cause was gallstones and alcoholism, for 43.4 % and 34.7 % respectively. 47.8 % presented the mild form of the disease. The lethality was 21.7 %. Conclusions: Severe forms of the disease are more frequent; acute renal failure and acute respiratory failure are the most representative complications.

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Resumo O enfrentamento da covid-19 suscitou uma série de problemas na área da saúde, em razão do aumento da demanda de cuidados intensivos. Para solucionar a crise causada pela escassez de recursos de alta complexidade, a tomada de decisão tem se norteado por escores prognósticos, porém esse processo inclui uma dimensão moral, ainda que esta seja menos evidente. Mediante revisão integrativa, este artigo buscou refletir sobre a razoabilidade da utilização de indicadores de gravidade para definir a alocação de recursos escassos na saúde. Observou-se que o trabalho realizado em situações de escassez de recursos provoca sobrecarga moral, convergindo para busca por soluções padronizadas e objetivas, como a utilização de escores prognósticos. Conclui-se que seu uso isolado e indiscriminado não é eticamente aceitável e merece avaliação cautelosa, mesmo em situações emergenciais, como a da covid-19.

Abstract Facing COVID-19 caused many problems in the healthcare field, due to the rise in the intensive care demand. To solve this crisis, caused by the scarcity of resources of high complexity, decision-making has been guided by prognostic scores; however, this process includes a moral dimension, although less evident. With na integrative review, this article sought to reflect on the reasonability of using severity indicators to define the allocation of the scarce resources in healthcare. We observed that the work carried out on resource scarcity situations causes moral overload, converging to the search for standard and objective solutions, such as the use of prognostic scores. We conclude that their isolated and indiscriminate use is not ethically acceptable and deserves cautious evaluation, even in emergency situations, such as COVID-19.

Resumen La lucha contra el Covid-19 implicó una serie de problemas en el área de la salud, debido al aumento de la demanda de cuidados intensivos. Para solucionar la crisis provocada por la escasez de recursos de alta complejidad, la toma de decisiones estuvo orientada por puntuaciones pronósticas, pero este proceso incluye una dimensión moral aún menos evidente. A partir de una revisión integradora, este artículo buscó reflexionar sobre la razonabilidad de utilizar indicadores de gravedad para definir la asignación de recursos escasos en salud. El trabajo realizado en situaciones de escasez de recursos genera sobrecarga moral, llevando a la búsqueda de soluciones estandarizadas y objetivas, como el uso de puntuaciones de pronóstico. Se concluye que su uso aislado e indiscriminado no es éticamente aceptable y merece una cuidadosa evaluación, incluso en situaciones de emergencia, como la del Covid-19.

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Resumen: Introducción: La obesidad es una enfermedad con impacto negativo en la sobrevida; se hace referencia al término «paradoja de la obesidad¼ utilizado como un efecto protector en la mortalidad. Objetivo: Determinar si la obesidad es un factor de protección en el paciente crítico. Material y métodos: Se realizó un estudio de cohorte. Se obtuvo información de expedientes de Unidad de Cuidados Intensivos (UCI) del Hospital Regional Monterrey del Instituto de Seguridad y Servicios Sociales para los Trabajadores del Estado (ISSSTE) Monterrey durante 2018. Se hizo análisis bivariado para asociación χ2 y U de Mann-Whitney para correlación fórmula de Pearson y análisis de supervivencia con curva de Kaplan-Meier. Resultados: Se analizaron 151 expedientes de pacientes, 73 obesos y 78 no obesos, se observó que la obesidad es un factor protector para mortalidad (p = 0.044, OR 0.431 (IC 0.187-0.992). El IMC no se correlaciona con el Acute physiology and chronic health evaluation (APACHE) II (p = 0.066); sin embargo, con un impacto en la curva de supervivencia (p = 0.42). Conclusiones: Se detecta la obesidad como factor protector; sin embargo, su asociación con enfermedades crónicas degenerativas, estancia prolongada en UCI y sus complicaciones no dejan de tener impacto negativo en la supervivencia fuera de la unidad.

Abstract: Introduction: Obesity is a disease with a negative impact on survival; the prognosis of these patients is has controversial results. The term «obesity paradox¼ refers as a protective effect on mortality. Objective: To determine whether obesity is a protective factor in the critically ill patient. Material y methods: A cohort study was conducted. Data was obtained from ICU records of the ISSSTE Monterrey Regional Hospital during 2018, bivariate analysis was performed for χ2 and Mann Whitney's U association, for Pearson's formula correlation and survival analysis with Kaplan-Meier curve. Results: 151 records of 73 obese and 78 non-obese patients were analyzed, it was observed that obesity is a protective factor for mortality (p = 0.044, OR 0.431(IC 0.187-0.992), BMI does not correlate with APACHE II (p = 0.066), however, an impact on the survival curve was observed (p = 0.42). Conclusions: According to the results obtained, it matches with the term «obesity paradox¼, however, its association with chronic degenerative diseases, prolonged stay in the ICU and its complications do not cease to have a negative impact on survival outside the unit.

Resumo: Introdução: A obesidade é uma doença com impacto negativo na sobrevida; O termo «paradoxo da obesidade¼ refere-se a um efeito protetor sobre a mortalidade. Objetivo: Determinar se a obesidade é um fator protetor em pacientes críticos. Material e métodos: Foi realizado um estudo de coorte. As informações foram obtidas dos registros da UTI do ISSSTE Monterrey Regional Hospital durante o ano de 2018, foi realizada análise bivariada para associação χ2 eU Mann-Whitney, para correlação da fórmula de Pearson e análise de sobrevida com curva de Kaplan-Meier. Resultados: Foram analisados 151 prontuários de 73 pacientes obesos e 78 não obesos, observou-se que a obesidade é fator protetor para mortalidade (p = 0.044, OR 0.431(IC 0.187-0.992), IMC não se correlaciona com APACHE II (p = 0.066), porém, com impacto na curva de sobrevida (p = 0.42). Conclusões: A obesidade é encontrada como fator de proteção, porém, sua associação com doenças crônico-degenerativas, permanência prolongada na UTI e suas complicações não deixam de ter impacto negativo na sobrevida fora da unidade.

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RESUMEN Introducción: El pronóstico de mortalidad del paciente, después de una cirugía abdominal, requiere de sistemas de ayuda que sean a la vez eficaces y reproducibles. Objetivo: Comparar la eficacia de tres procedimientos en la predicción de la mortalidad de pacientes laparotomizados de urgencia. Métodos: Estudio multicéntrico observacional de cohorte prospectiva con 200 pacientes en el posoperatorio de cirugía abdominal mayor urgente atendidos en los hospitales "Miguel Enríquez", "Carlos J. Finlay" y "Hermanos Ameijeiras" entre noviembre de 2016 y noviembre 2018. Se aplicaron media, desviación estándar, mediana y rango intercuartílico para la comparación entre vivos y fallecidos y se calculó la probabilidad de morir según el modelo que incluye ambos procedimientos. Se evaluó la capacidad de discriminación mediante la construcción de tres curvas de características operacionales del receptor, sus áreas bajo las curvas e intervalos de confianza. Resultados: La mortalidad total fue de 38 % y predominó significativamente en los pacientes de mayor edad, con mayor número de complicaciones, los reoperados y aquellos con hallazgos sépticos durante la reoperación. El poder predictivo fue mayor para el APACHE II en comparación a los otros dos procedimientos (área bajo la curva 0,912, IC 95 %: 0,840-0,933, p< 0,001). Conclusiones: El APACHE II es un modelo eficaz y confiable para la predicción de la mortalidad de pacientes en el posoperatorio de cirugía mayor de urgencia, que lo hacen muy recomendable para este propósito.

ABSTRACT Introduction: The mortality prognosis of patients after abdominal surgery demands effective and reproducible aid systems. Objective: To compare the efficacy of three procedures in predicting mortality in emergency laparotomy patients. Methods: Prospective cohort observational multicenter study with 200 patients in the postoperative period of urgent major abdominal surgery assisted at the "Miguel Enríquez", "Carlos J Finlay", "Hermanos Ameijeiras" hospitals between November 2016 and November 2018. Mean, standard deviation median and interquartile range measures were applied for the comparison between living and deceased and the probability of dying was calculated according to the model that includes both procedures. Discrimination capacity was evaluated by constructing three curves of receiver operational characteristics, areas under the curves and confidence intervals were determined. Results: Total mortality was 38% and significantly prevailed in older patients, with a greater number of complications, reoperated patients, and those with septic findings during reoperation. Predictive power was higher for APACHE II compared to the other two procedures (area under the curve 0.912, CI 95%: 0.840-0.933, p< 0.001). Conclusions: APACHE II is an effective and reliable model for predicting mortality in patients in the postoperative period of major emergency surgery, which makes it highly recommended for this purpose.

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Abstract Introduction: Pancreatitis is a frequent pathology in our environment, mostly related to benign biliary pathology. It can progress to severe forms in 10-15 % of cases, where the pancreatic tissue becomes necrotic and forms large collections with risk of infection. We do not have epidemiological data about the incidence or management of this complication in Colombia. Aim: This study aims to study the prevalence of infected pancreatic necrosis and describe the cases identified in a quaternary care hospital between 2014 and 2021. Materials and methods: A cross-sectional observational study. We analyzed records of patients diagnosed with stage 2 pancreatitis. Those cases with infected pancreatic necrosis that underwent debridement plus laparoscopic and open surgical drainage at Hospital Universitario Mayor Méderi in Bogotá, Colombia, between January 2014 and January 2021 were studied. A convenience sampling was carried out without calculating the sample size. We collected the patients' demographic and clinical variables, performing a descriptive statistical analysis in Excel. Qualitative variables were described through absolute and relative frequencies, while quantitative ones were expressed through measures of central tendency and dispersion based on their distribution. Results: We analyzed 1020 episodes of pancreatitis, finding pancreatic necrosis in 30 patients, i.e., a period prevalence of 2.9 %. Of the patients, 83 % (n = 25) underwent open drainage, with 48 % (n = 12) mortality. About laparoscopic management, the reduction in postoperative organ failure was 40 % (n = 2), with a 30 % shorter hospital stay than the open drainage approach. Those patients with a level of procalcitonin (PCT) lower than 1.8 ng/mL had less mortality. Conclusions: The laparoscopic approach shows promising results regarding final morbidity and mortality.

Resumen Introducción: la pancreatitis es una patología frecuente en nuestro medio, mayormente relacionada con la patología biliar benigna. Esta puede progresar a formas severas en 10 %-15 % de los casos, en donde el tejido pancreático se necrosa y forma grandes colecciones, con riesgo de infección. En Colombia no conocemos los datos epidemiológicos acerca de la incidencia de este tipo de complicaciones, ni del manejo de las mismas. Objetivo: este estudio tiene como objetivo estudiar la prevalencia de la necrosis pancreática infectada y describir los casos identificados en un hospital de alto nivel de complejidad entre 2014 y 2021. Métodos: estudio observacional de corte transversal. Se analizaron los registros de pacientes diagnosticados con pancreatitis en segunda etapa. Se estudiaron aquellos casos que presentaron necrosis pancreática infectada y se sometieron a desbridamiento más drenaje quirúrgico por vía laparoscópica y abierta en el Hospital Universitario Mayor Méderi de Bogotá, Colombia, entre enero de 2014 y enero de 2021. Se realizó un muestreo por conveniencia, sin cálculo de tamaño de muestra. Se recolectaron variables demográficas y clínicas de los pacientes. Se realizó un análisis estadístico descriptivo de las variables obtenidas en Excel. Las variables cualitativas se describieron a través de frecuencias absolutas y relativas; mientras que las cuantitativas se expresaron mediante medidas de tendencia central y de dispersión en función de su distribución. Resultados: se analizaron 1020 episodios de pancreatitis y se evidenció necrosis pancreática en 30 pacientes, es decir, una prevalencia de período de 2,9 %. De los pacientes, 83 % (n = 25) se llevó a drenajes por vía abierta, con un 48 % (n = 12) de mortalidad. En relación con el manejo por vía laparoscópica, la reducción en la falla orgánica posoperatoria fue de 40 % (n = 2), con un 30 % menos de duración en la estancia hospitalaria, comparado con la vía abierta. Aquellos pacientes que presentaron un nivel de procalcitonina (PCT) menor de 1,8 ng/mL tuvieron menos mortalidad. Conclusiones: el abordaje laparoscópico muestra resultados prometedores en cuanto a la morbilidad y mortalidad final observada.

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Introduction: The acute physiology and chronic health evaluation (APACHE), sepsis-related organ failure assessment (SOFA), score for pneumonia severity (CURB-65) scales, a low phase angle (PA) and low muscle strength (MS) have demonstrated their prognostic risk for mortality in hospitalized adults. However, no study has compared the prognostic risk between these scales and changes in body composition in a single study in adults with SARS-CoV-2 pneumonia. The great inflammation and complications that this disease presents promotes immobility and altered nutritional status, therefore a low PA and low MS could have a higher prognostic risk for mortality than the scales. The aim of the present study was to evaluate the prognostic risk for mortality of PA, MS, APACHE, SOFA, and CURB-65 in adults hospitalized with SARS-CoV-2 pneumonia. Methodology: This was a longitudinal study that included n = 104 SARS-CoV-2-positive adults hospitalized at General Hospital Penjamo, Guanajuato, Mexico, the PA was assessed using bioelectrical impedance and MS was measured with manual dynamometry. The following disease severity scales were applied as well: CURB-65, APACHE, and SOFA. Other variables analyzed were: sex, age, CO-RADS index, fat mass index, body mass index (BMI), and appendicular muscle mass index. A descriptive analysis of the study variables and a comparison between the group that did not survive and survived were performed, as well as a Cox regression to assess the predictive risk to mortality. Results: Mean age was 62.79 ± 15.02 years (31-96). Comparative results showed a mean PA of 5.43 ± 1.53 in the group that survived vs. 4.81 ± 1.72 in the group that died, p = 0.030. The mean MS was 16.61 ± 10.39 kg vs. 9.33 ± 9.82 in the group that died, p = 0.001. The cut-off points for low PA was determined at 3.66° and ≤ 5.0 kg/force for low grip strength. In the Cox multiple regression, a low PA [heart rate (HR) = 2.571 0.726, 95% CI = 1.217-5.430] and a low MS (HR = 4.519, 95% CI = 1.992-10.252) were associated with mortality. Conclusion: Phase angle and MS were higher risk predictors of mortality than APACHE, SOFA, and CURB-65 in patients hospitalized for COVID-19. It is important to include the assessment of these indicators in patients positive for SARS-CoV-2 and to be able to implement interventions to improve them.

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Developing methods for successfully grafting forest species will be helpful for establishing asexual seed orchards and increasing the success of forest genetic improvement programs in Mexico. In this study we investigated the effects of two grafting techniques (side veneer and top cleft) and two phenological stages of the scion buds (end of latency and beginning of sprouting), in combination with other seven grafting variables, on the sprouting and survival of 120 intraspecific grafts of Pinus engelmannii Carr. The scions used for grafting were taken from a 5.5-year-old commercial forest plantation. The first grafting was performed on January 18 (buds at the end of dormancy) and the second on February 21 (buds at the beginning of sprouting). The data were examined by analysis of variance and a test of means and were fitted to two survival models (the Weibull's accelerated failure time and the Cox's proportional hazards model) and the respective hazard ratios were calculated. Survival was higher in the top cleft grafts made with buds at the end of latency, with 80% sprouting and an estimated average survival time of between 164 and 457 days after the end of the 6-month evaluation period. Four variables (grafting technique, phenological stage of the scion buds, scion diameter and rootstock height) significantly affected the risk of graft death in both survival models. Use of top cleft grafts with buds at the end of the latency stage, combined with scion diameters smaller than 11.4 mm and rootstock heights greater than 58.5 cm, was associated with a lower risk of death.

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Resumen: Introducción: La infección por SARS-CoV-2 en Wuhan, China, ocasionó una pandemia de tal magnitud que ha provocado la muerte por neumonía a causa de enfermedad infecciosa por coronavirus 19 (COVID-19) de millones de personas. Nos dimos a la tarea de recolectar todas las características de los pacientes que estuvieron hospitalizados por esta enfermedad en nuestra UCI adultos. Material y métodos: Se realizó un estudio de tipo analítico, descriptivo, observacional y retrospectivo en pacientes con diagnóstico de COVID-19 ingresados en la Unidad de Cuidados Intensivos (UCI) del Hospital Ángeles Clínica Londres en la Ciudad de México, evaluados en el periodo del 23 de marzo de 2020 al 10 de mayo de 2020. Se revisaron los expedientes y se tomaron los datos de los mismos, se describieron variables de tipo demográfico, factores de riesgo, signos y síntomas, tratamiento médico y atención respiratoria. Se revisaron escalas de mortalidad SAPS III, APACHE II, SOFA y CALL-score. Se formaron dos grupos con y sin mortalidad realizándose análisis bivariado y multivariado de las variables significativas. El análisis estadístico se efectuó con el programa SPSS 25. Resultados: En el periodo considerado, 25 expedientes cumplieron con los criterios de inclusión, de ellos la demografía y factores de riesgo, 18 (72%) correspondieron a hombres y siete (38%) a mujeres con una mortalidad de 10 (40%). Los factores de riesgo más frecuentes fueron diabetes mellitus (DM) en siete (38%) pacientes, hipertensión arterial (HAS) en seis (24%), obesidad en cuatro (16%), enfermedad pulmonar obstructiva crónica (EPOC) en uno (4%), tabaquismo en 11 (44%) y alcoholismo en siete (28%). Se encontraron diferencias estadísticamente significativas en los grupos sin mortalidad y con mortalidad, 15 y 10 pacientes, respectivamente, observando las siguientes significancias: glucosa 105 mg/dL (percentil [PE 88]) versus 171 mg/dL (PE 125) p = 0.012, urea 33 mg/dL (PE 22) versus 95 mg/dL (PE 57) p = 0.03, BUN 15.3 mg/dL (PE 11) versus 44.2 mg/dL (PE 26.28) p = 0.04, TGO 32 U/L (PE 24.4) versus 58 U/L (PE 43.8) p = 0.010, DHL 239 U/L (PE 198) 454 U/L (PE 260) p = 0.003, triglicéridos 148 mg/dL (PE 120) versus 187.5 mg/dL (PE 165) p = 0.002, CPK 70 U/L (PE 35) versus 81 U/L (PE 78.25) p = 0.003, ferritina 446 mg/L (PE 238) versus 1,030 mg/L (PE 665) p = 0.007. Se realizó un análisis bivariado con regresión logística binaria, con la variable mortalidad dicotómica, no resultando significativa con esta prueba. Conclusiones: Se entiende que ninguna variable es predominantemente importante para explicar la mortalidad y que se recurre a muchos factores que se conjugan para explicar este desenlace, uno de éstos es la severidad misma del problema respiratorio en que se encuentre el paciente.

Abstract: Introduction: The SARS-CoV-2 infection in Wuhan, China caused a pandemic of such magnitude that it has caused the death of millions of people from pneumonia due to infectious disease caused by coronavirus 19 (COVID-19). We took on the task of collecting all the characteristics of the patients who were hospitalized for this disease in our Adult Intensive Care Unit. Material and methods: An analytical, descriptive, observational and retrospective study was carried out in patients with a diagnosis of COVID-19 admitted to the Intensive Care Unit (ICU) of the Hospital Ángeles Clínica Londres in Mexico City, evaluated in the period of March 23 from 2020 to May 10, 2020. The files were reviewed and the data taken from them, demographic variables, risk factors, signs and symptoms, medical treatment and respiratory care were described. SAPS III, APACHE II, SOFA and CALL-score mortality scales were reviewed. Two groups were formed with and without mortality, performing bivariate and multivariate analyzes of the significant variables. Statistical analysis was performed with the SPSS 25 program. Results: In the period considered, 25 files met the inclusion criteria for them: demographics and risk factors were 18 (72%) corresponding to men and seven (38%) to women. With a mortality of 10 (40%). The most frequent risk factors are diabetes mellitus (DM) in seven (38%), arterial hypertension (SAH) six (24%), obesity four (16%), chronic obstructive pulmonary disease (COPD) one (4%), smoking 11 (44%) and alcoholism seven (28%). Statistically significant differences were found in the groups without mortality and with mortality 15 and 10 patients respectively, observing the following significance: glucose 105 mg/dL (percentil [PE] 88) versus 171 mg/dL (PE 125) p = 0.012, urea 33 mg/dL (PE 22) versus 95 mg/dL (PE 57) p = 0.03, BUN 15.3 mg/dL (PE 11) versus 44.2 mg/dL (PE 26.28) p = 0.04, TGO 32 U/L (PE 24.4) versus 58 U/L (PE 43.8) p = 0.010, DHL 239 U/L (PE 198) 454 U/L (PE 260) p = 0.003, triglycerides 148 mg/dL (PE 120) versus 187.5 mg/dL (PE 165) p = 0.002, CPK 70 U/L (PE 35) versus 81 U/L (PE 78.25) p = 0.003, ferritin 446 mg/L (PE 238) versus 1,030 mg/L (PE 665) p = 0.007. A bivariate analysis with binary logistic regression was performed, with the dichotomous mortality variable, not resulting in this significant test. Conclusions: It is understood that no variable is predominantly important to explain mortality and that many factors are involved that are combined to explain this outcome, one of these being the same severity of the respiratory problem in which the patient is.

Resumo: Introdução: A infecção por SARS-CoV-2 em Wuhan China causou uma pandemia de tal magnitude que causou a morte de milhões de pessoas por pneumonia devido a doença infecciosa causada pelo coronavírus 19 (COVID-19). Assumimos a tarefa de coletar todas as características dos pacientes internados por essa doença em nossa unidade de terapia intensiva adulto. Material e métodos: Realizou-se um estudo analítico, descritivo, observacional e retrospectivo em pacientes com diagnóstico de COVID-19 internados na Unidade de Terapia Intensiva (UTI) do Hospital Ángeles Clínica Londres na Cidade do México, validado para o período de 23 de março de 2020 a 10 de maio de 2020. Os prontuários médicos foram revisados e seus dados coletados, as variáveis do tipo demográficas foram descritas, fatores de risco, sinais e sintomas, tratamento médico e cuidados respiratórios. Foram revisadas as escalas de mortalidade SAPS III, APACHE II, SOFA e CALL-score. Dois grupos foram formados com e sem mortalidade, realizando análises bivariadas e multivariadas das variáveis significativas. A análise estatística foi realizada com o programa SPSS 25. Resultados: No período considerado, 25 prontuários atenderam aos critérios de inclusão para os mesmos: dados demográficos e fatores de risco foram 18 (72%) correspondentes a homens e 7 (38%) a mulheres. Com mortalidade de 10 (40%). Os fatores de risco mais frequentes são diabetes mellitus (DM) em 7 (38%), hipertensão arterial (HAS) 6 (24%), obesidade 4 (16%), doença pulmonar obstrutiva crônica (DPOC) 1 (4%), tabagismo 11 (44%) e alcoolismo 7 (28%). Encontrou-se diferenças estatisticamente significativas nos grupos sem mortalidade e com mortalidade de 15 e 10 pacientes respectivamente, observando a seguinte significância: glicose 105 mg/dL (percentil [PE] 88) versus 171 mg/dL (PE 125) p = 0.012, uréia 33 mg/L (PE 22) versus 95 mg/L (PE 57) p = 0.03, BUN 15.3 mg/L (PE 11) versus 44.2 mg/L (PE 26.28) p = 0.04, TGO 32 U/L (PE 24.4) versus 58 U/L (PE 43.8) p = 0.010, DHL 239 U/L (PE 198) 454 (PE 260) p = 0.003, triglicerídeos 148 mg/dL (PE 120) versus 187.5 mg/dL (PE 165) p = 0.002, CPK 70 U/L (PE 35) versus 81 U/L (PE 78.25) p = 0.003, ferritina 446 mg/L (PE 238) versus 1030 mg/L (PE 665) p = 0.007. Realizou-se análise bivariada com regressão logística binária, com a variável mortalidade dicotômica, não resultando em teste significativo. Conclusões: Entende-se que nenhuma variável é predominantemente importante para explicar a mortalidade e que usamos muitos fatores que se conjugam para explicar esse desfecho, sendo um deles a mesma gravidade do problema respiratório em que o paciente se encontra.