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BACKGROUND: Re-intubation is necessary in 2% to 30% of cases of patients receiving a planned extubation. This procedure is associated with prolonged mechanical ventilation, a greater need for tracheostomy, a higher incidence of ventilator-associated pneumonia, and higher mortality. The aim of this study was to evaluate the effect of re-intubation within 48 h on mortality after planned extubation by using a randomized controlled trial database. METHODS: Secondary analysis of a multi-center randomized trial, which evaluated the effect of reconnection to mechanical ventilation for 1 h after a successful spontaneous breathing trial, followed by extubation. The study included adult subjects who received invasive mechanical ventilation for > 12 h. The subjects were divided into an extubation failure group and an extubation success group. The outcome was in-hospital mortality. Two multivariate logistic regression models were constructed to identify independent factors associated with mortality. RESULTS: Among the 336 subjects studied, extubation failed in 52 (15.4%) and they were re-intubated within 48 h. Most re-intubations occurred between 12 and 24 h after planned extubation (median [interquartile range] 16 [6-36] h). Mortality of the extubation failure group was higher both in the ICU (32.6% vs 6.6%; odds ratio [OR] 6.77, 95% CI 3.22-14.24; P < .001) and in-hospital (42.3% vs 14.0%; OR 4.47, 95% CI 2.34-8.51; P < .001) versus the extubation success group. Multivariate logistic regression analyses showed that re-intubation within 48 h was independently associated with both ICU mortality (OR 6.10, 95% CI 2.84-13.07; P < .001) and in-hospital mortality (OR 3.36, 95% CI 1.67-6.73; P = .001). In-hospital mortality was also associated with rescue noninvasive ventilation after extubation (OR 2.44, 95% CI 1.25-4.75; P = .009). CONCLUSIONS: Re-intubation within 48 h after planned extubation was associated with mortality in subjects who were critically ill.

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Introduction The criteria for the removal of the tracheostomy tube (decannulation) vary from center to center. Some perform an endoscopic evaluation under anesthesia or computed tomography, which adds to the cost and discomfort. We use a simple two-part protocol to determine the eligibility and carry out the decannulation: part I consists of airway and swallowing assessment through an office-based flexible laryngotracheoscopy, and part II involves a tracheostomy capping trial. Objective The primary objective was to determine the safety and efficacy of the simplified decannulation protocol followed at our center among the patients who were weaned off the mechanical ventilator and exhibited good swallowing function clinically. Methods Of the patients considered for decannulation between November 1st, 2018, and October 31st, 2020, those who had undergone tracheostomy for prolonged mechanical ventilation were included. The efficacy to predict successful decannulation was calculated by the decannulation rate among patients who had been deemed eligible for decannulation in part I of the protocol, and the safety profile was defined by the protocol's ability to correctly predict the chances of risk-free decannulation among those submitted to part II of the protocol. Results Among the 48 patients included (mean age: 46.5 years; male-to-female ratio: 3:1), the efficacy of our protocol in predicting the successful decannulation was of 87.5%, and it was was safe or reliable in 95.45%. Also, in our cohort, the decannulation success and the duration of tracheotomy dependence were significantly affected by the neurological status of the patients. Conclusion The decannulation protocol consisting of office-based flexible laryngotracheoscopy and capping trial of the tracheostomy tube can safely and effectively aid the decannulation process.

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BACKGROUND: Weaning patients with COPD from mechanical ventilation (MV) presents a challenge, as literature on this topic is limited. This study compares PSV and T-piece during spontaneous breathing trials (SBT) in this specific population. METHODS: A search of PubMed, EMBASE, and Cochrane in September 2023 yielded four randomized controlled trials (RCTs) encompassing 560 patients. Among these, 287 (51%) used T-piece during SBTs. RESULTS: The PSV group demonstrated a significant improvement in the successful extubation rate compared to the T-piece (risk ratio [RR] 1.14; 95% confidence interval [CI] 1.03-1.26; p = 0.02). Otherwise, there was no statistically significant difference in the reintubation (RR 1.07; 95% CI 0.79-1.45; p = 0.67) or the ICU mortality rates (RR 0.99; 95% CI 0.63-1.55; p = 0.95). CONCLUSION: Although PSV in SBTs exhibits superior extubation success, consistent weaning protocols warrant further exploration through additional studies.

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ABSTRACT Objective: To evaluate the association of biomarkers with successful ventilatory weaning in COVID-19 patients. Methods: An observational, retrospective, and single-center study was conducted between March 2020 and April 2021. C-reactive protein, total lymphocytes, and the neutrophil/lymphocyte ratio were evaluated during attrition and extubation, and the variation in these biomarker values was measured. The primary outcome was successful extubation. ROC curves were drawn to find the best cutoff points for the biomarkers based on sensitivity and specificity. Statistical analysis was performed using logistic regression. Results: Of the 2,377 patients admitted to the intensive care unit, 458 were included in the analysis, 356 in the Successful Weaning Group and 102 in the Failure Group. The cutoff points found from the ROC curves were −62.4% for C-reactive protein, +45.7% for total lymphocytes, and −32.9% for neutrophil/lymphocyte ratio. These points were significantly associated with greater extubation success. In the multivariate analysis, only C-reactive protein variation remained statistically significant (OR 2.6; 95%CI 1.51 - 4.5; p < 0.001). Conclusion: In this study, a decrease in C-reactive protein levels was associated with successful extubation in COVID-19 patients. Total lymphocytes and the neutrophil/lymphocyte ratio did not maintain the association after multivariate analysis. However, a decrease in C-reactive protein levels should not be used as a sole variable to identify COVID-19 patients suitable for weaning; as in our study, the area under the ROC curve demonstrated poor accuracy in discriminating extubation outcomes, with low sensitivity and specificity.

RESUMO Objetivo: Avaliar a associação de biomarcadores com o sucesso do desmame ventilatório em pacientes com COVID-19. Métodos: Trata-se de estudo observacional, retrospectivo e de centro único realizado entre março de 2020 e abril de 2021. Foram avaliados a proteína C-reativa, os linfócitos totais e a relação neutrófilos/linfócitos durante o atrito e a extubação; mediu-se a variação desses valores de biomarcadores. O desfecho primário foi o sucesso da extubação. As curvas ROC foram desenhadas para encontrar os melhores pontos de corte dos biomarcadores segundo a sensibilidade e a especificidade. A análise estatística foi realizada por meio de regressão logística. Resultados: Dos 2.377 pacientes admitidos na unidade de terapia intensiva, 458 foram incluídos na análise, 356 no Grupo Sucesso do desmame e 102 no Grupo Fracasso do desmame. Os pontos de corte encontrados nas curvas ROC foram −62,4% para proteína C-reativa, +45,7% para linfócitos totais e −32,9% para relação neutrófilo/linfócito. Esses pontos foram significativamente associados ao maior sucesso da extubação. Na análise multivariada, apenas a variação da proteína C-reativa permaneceu estatisticamente significativa (RC 2,6; IC95% 1,51 - 4,5; p < 0,001). Conclusão: Neste estudo, uma diminuição nos níveis de proteína C-reativa foi associada ao sucesso da extubação em pacientes com COVID-19. Os linfócitos totais e a relação neutrófilos/linfócitos não mantiveram a associação após a análise multivariada. No entanto, uma diminuição nos níveis de proteína C-reativa não deve ser usada como única variável para identificar pacientes com COVID-19 adequados para o desmame; como em nosso estudo, a área sob a curva ROC demonstrou baixa precisão na discriminação dos resultados de extubação, com baixas sensibilidade e especificidade.

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Abstract Introduction The criteria for the removal of the tracheostomy tube (decannulation) vary from center to center. Some perform an endoscopic evaluation under anesthesia or computed tomography, which adds to the cost and discomfort. We use a simple two-part protocol to determine the eligibility and carry out the decannulation: part I consists of airway and swallowing assessment through an office-based flexible laryngotracheoscopy, and part II involves a tracheostomy capping trial. Objective The primary objective was to determine the safety and efficacy of the simplified decannulation protocol followed at our center among the patients who were weaned off the mechanical ventilator and exhibited good swallowing function clinically. Methods Of the patients considered for decannulation between November 1st, 2018, and October 31st, 2020, those who had undergone tracheostomy for prolonged mechanical ventilation were included. The efficacy to predict successful decannulation was calculated by the decannulation rate among patients who had been deemed eligible for decannulation in part I of the protocol, and the safety profile was defined by the protocol's ability to correctly predict the chances of risk-free decannulation among those submitted to part II of the protocol. Results Among the 48 patients included (mean age: 46.5 years; male-to-female ratio: 3:1), the efficacy of our protocol in predicting the successful decannulation was of 87.5%, and it was was safe or reliable in 95.45%. Also, in our cohort, the decannulation success and the duration of tracheotomy dependence were significantly affected by the neurological status of the patients. Conclusion The decannulation protocol consisting of office-based flexible laryngotracheoscopy and capping trial of the tracheostomy tube can safely and effectively aid the decannulation process.

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Introduction: In critically ill patients on mechanical ventilation, the loss of inspiratory and peripheral muscle strength is associated with prolonged mechanical ventilation and failed weaning. Objective: To determine the relationship between handgrip strength and inspiratory muscle strength with the success of the Spontaneous Breathing Trial in adults with ventilatory support greater than 48 hours. Methodology: Prospective observational cross-sectional study performed at a tertiary hospital in Colombia. Handgrip strength and Maximal Inspiratory Pressure were measured once a day before Spontaneous Breathing Trial testing. Pearson's test and Cohen's D test were used to analyze correlations. Results: A total of 51 patients were included, 57% male, with a mean age of 51.9±20 years. A positive correlation was identified between Maximal Inspiratory Pressure and grip strength; and a negative correlation between grip strength and Maximal Inspiratory Pressure with the days of stay in the intensive care unit, (r -0.40; p<0.05) and (r -0.45; p<0.05). Conclusions: Handgrip strength and Maximal Inspiratory Pressure were positively correlated with Spontaneous Breathing Trial success. The importance of these measures to guide ventilator disconnection processes is highlighted.

Introducción: En el paciente críticamente enfermo con ventilación mecánica, la pérdida de la fuerza de los músculos inspiratorios y periféricos se asocia con ventilación mecánica prolongada y destete fallido. Objetivo: Determinar la relación entre la fuerza de prensión manual y la fuerza de músculos inspiratorios con el éxito de la prueba de respiración espontánea en adultos con soporte ventilatorio mayor a 48 horas. Metodología: Estudio prospectivo observacional de corte transversal realizado en un hospital de tercer nivel en Colombia. La fuerza de prensión manual y la presión inspiratoria máxima se midieron una vez al día antes de la prueba de prueba de respiración espontánea. Se utilizaron la prueba de Pearson y la prueba D de Cohen para analizar las correlaciones. Resultados: Se incluyeron 51 pacientes, 57 % de sexo masculino, con una edad promedio de 51,9 ± 20 años. Se identificó una correlación positiva entre Presión Inspiratoria Máxima y fuerza de la mano; y una correlación negativa entre la fuerza de la mano y la Presión Inspiratoria Máxima con los días de estancia en la Unidad de Cuidados Intensivos, (r -0,40; p < 0,05) y (r -0,45;p < 0,05). Conclusiones: La fuerza de prensión manual y la Presión Inspiratoria Máxima se correlacionaron positivamente con el éxito de la Prueba de Respiración Espontánea. Se destaca la importancia de estas mediciones para guiar procesos de desconexión del ventilador.

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OBJECTIVE: To investigate whether protocol-directed weaning in neurocritical patients would reduce the rate of extubation failure (as a primary outcome) and the associated complications (as a secondary outcome) compared with conventional weaning. METHODS: A quasi-experimental study was conducted in a medical-surgical intensive care unit from January 2016 to December 2018. Patients aged 18 years or older with an acute neurological disease who were on mechanical ventilation > 24 hours were included. All patients included in the study were ready to wean, with no or minimal sedation, Glasgow coma score ≥ 9, spontaneous ventilatory stimulus, noradrenaline ≤ 0.2µgr/kg/ minute, fraction of inspired oxygen ≤ 0.5, positive end-expiratory pressure ≤ 5cmH2O, maximal inspiratory pressure < -20cmH2O, and occlusion pressure < 6cmH2O. RESULTS: Ninety-four of 314 patients admitted to the intensive care unit were included (50 in the Intervention Group and 44 in the Control Group). There was no significant difference in spontaneous breathing trial failure (18% in the Intervention Group versus 34% in the Control Group, p = 0.12). More patients in the Intervention Group were extubated than in the Control Group (100% versus 79%, p = 0.01). The rate of extubation failure was not signifiantly diffrent between the groups (18% in the Intervention Group versus 17% in the Control Group; relative risk 1.02; 95%CI 0.64 - 1.61; p = 1.00). The reintubation rate was lower in the Control Group (16% in the Intervention Group versus 11% in the Control Group; relative risk 1.15; 95%CI 0.74 - 1.82; p = 0.75). The need for tracheotomy was lower in the Intervention Group [4 (8%) versus 11 (25%) in the Control Group; relative risk 0.32; 95%CI 0.11 - 0.93; p = 0.04]. At Day 28, the patients in the Intervention Group had more ventilator-free days than those in the Control Group [28 (26 - 28) days versus 26 (19 - 28) days; p = 0.01]. The total duration of mechanical ventilation was shorter in the Intervention Group than in the Control Group [5 (2 - 13) days versus 9 (3 - 22) days; p = 0.01]. There were no diffrences in the length of intensive care unit stay, 28-day free from mechanical ventilation, hospital stay or 90-day mortality. CONCLUSION: Considering the limitations of our study, the application of a weaning protocol for neurocritical patients led to a high percentage of extubation, a reduced need for tracheotomy and a shortened duration of mechanical ventilation. However, there was no reduction in extubation failure or the 28-day free of from mechanical ventilation compared with the Control Group.ClinicalTrials.gov Registry: NCT03128086.

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Resumen Introducción: Alrededor del 50% de los pacientes hos pitalizados por injuria cerebral adquirida grave requie ren traqueostomía y cuidados a largo plazo. El objetivo principal de este estudio fue describir la evolución de enfermos con injuria cerebral adquirida grave (ICAg) traqueostomizados que ingresaron a rehabilitación. Se cundariamente se estudió el fracaso de la decanulación y la supervivencia a los 12 meses del alta. Métodos: estudio cuantitativo observacional prospec tivo de centro único. Se incorporó al estudio, de forma prospectiva y consecutiva, usuarios mayores de 18 años, traqueostomizados posterior a ICAg ingresados a un cen tro de rehabilitación entre abril de 2018 y marzo de 2020. Resultados: se incluyeron para el análisis 50 pacien tes. La estancia en el centro fue de 203 (RIQ 93-320) días. Al alta de la institución, 32 (64%) pacientes pudieron ser decanulados exitosamente. El tiempo transcurrido desde el ingreso al centro hasta la decanulación fue de 49 (12-172) días. No se observó fracaso de la decanula ción. La mortalidad a los 12 meses de seguimiento fue de 32%, cinco (16%) de los 32 pacientes que pudieron ser decanulados y 11 (61%) de los 18 que no lograron la decanulación fallecieron dentro de los 12 meses de seguimiento. La relación entre la decanulación y la mortalidad a los 12 meses de seguimiento resultó esta dísticamente significativa (p = 0.002). Discusión: La supervivencia global fue relativamente elevada, el proceso de decanulación resulta relevante ya que puede tener impacto en la supervivencia a largo plazo.

Abstract Introduction: About 50% of patients hospitalized for severe acquired brain injury require tracheostomy, and many of them need long-term care. The main objective of this study was to describe the evolution of patients with severe acquired brain injury (sABI) tracheotomized who entered rehabilitation. Secondarily, mortality re lated to the success or failure of decannulation and survival at 12 months of discharge were studied. Methods: A single-center prospective observational quantitative study. Users over 18 years of age were recruited prospectively and consecutively, tracheosto mized after sABI, and admitted to a rehabilitation center between April 2018 and March 2020. Results: Fifty patients were included for analysis. The stay in the center was 203 (RIQ 93-320) days. At discharge to the institution, 32 (64%) patients managed to be successfully decannulated. The median number of days from admission to the center to decannulation was 49 (12-172). No decannulation failure was observed. Mortality at 12 months follow-up was 32%, five (16%) of the 32 patients who managed to be decannulated, and 11 (61%) of 18 who failed to achieve decannulation died within 12 months of follow-up. The relationship between decannulation success and mortality at 12 months of follow-up was statistically significant (p= 0.002). Discussion: Addressing the decannulation process early and properly guided is relevant as it may impact long-term survival.

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INTRODUCTION: About 50% of patients hospitalized for severe acquired brain injury require tracheostomy, and many of them need long-term care. The main objective of this study was to describe the evolution of patients with severe acquired brain injury (sABI) tracheotomized who entered rehabilitation. Secondarily, mortality related to the success or failure of decannulation and survival at 12 months of discharge were studied. METHODS: A single-center prospective observational quantitative study. Users over 18 years of age were recruited prospectively and consecutively, tracheostomized after sABI, and admitted to a rehabilitation center between April 2018 and March 2020. RESULTS: Fifty patients were included for analysis. The stay in the center was 203 (RIQ 93-320) days. At discharge to the institution, 32 (64%) patients managed to be successfully decannulated. The median number of days from admission to the center to decannulation was 49 (12-172). No decannulation failure was observed. Mortality at 12 months follow-up was 32%, five (16%) of the 32 patients who managed to be decannulated, and 11 (61%) of 18 who failed to achieve decannulation died within 12 months of follow-up. The relationship between decannulation success and mortality at 12 months of follow-up was statistically significant (p= 0.002). DISCUSSION: Addressing the decannulation process early and properly guided is relevant as it may impact long-term survival.

Introducción: Alrededor del 50% de los pacientes hospitalizados por injuria cerebral adquirida grave requieren traqueostomía y cuidados a largo plazo. El objetivo principal de este estudio fue describir la evolución de enfermos con injuria cerebral adquirida grave (ICAg) traqueostomizados que ingresaron a rehabilitación. Secundariamente se estudió el fracaso de la decanulación y la supervivencia a los 12 meses del alta. Métodos: estudio cuantitativo observacional prospectivo de centro único. Se incorporó al estudio, de forma prospectiva y consecutiva, usuarios mayores de 18 años, traqueostomizados posterior a ICAg ingresados a un centro de rehabilitación entre abril de 2018 y marzo de 2020. Resultados: se incluyeron para el análisis 50 pacientes. La estancia en el centro fue de 203 (RIQ 93-320) días. Al alta de la institución, 32 (64%) pacientes pudieron ser decanulados exitosamente. El tiempo transcurrido desde el ingreso al centro hasta la decanulación fue de 49 (12-172) días. No se observó fracaso de la decanulación. La mortalidad a los 12 meses de seguimiento fue de 32%, cinco (16%) de los 32 pacientes que pudieron ser decanulados y 11 (61%) de los 18 que no lograron la decanulación fallecieron dentro de los 12 meses de seguimiento. La relación entre la decanulación y la mortalidad a los 12 meses de seguimiento resultó estadísticamente significativa (p = 0.002). Discusión: La supervivencia global fue relativamente elevada, el proceso de decanulación resulta relevante ya que puede tener impacto en la supervivencia a largo plazo.

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ABSTRACT Objective: To investigate whether protocol-directed weaning in neurocritical patients would reduce the rate of extubation failure (as a primary outcome) and the associated complications (as a secondary outcome) compared with conventional weaning. Methods: A quasi-experimental study was conducted in a medical-surgical intensive care unit from January 2016 to December 2018. Patients aged 18 years or older with an acute neurological disease who were on mechanical ventilation > 24 hours were included. All patients included in the study were ready to wean, with no or minimal sedation, Glasgow coma score ≥ 9, spontaneous ventilatory stimulus, noradrenaline ≤ 0.2μgr/kg/ minute, fraction of inspired oxygen ≤ 0.5, positive end-expiratory pressure ≤ 5cmH2O, maximal inspiratory pressure < -20cmH2O, and occlusion pressure < 6cmH2O. Results: Ninety-four of 314 patients admitted to the intensive care unit were included (50 in the Intervention Group and 44 in the Control Group). There was no significant difference in spontaneous breathing trial failure (18% in the Intervention Group versus 34% in the Control Group, p = 0.12). More patients in the Intervention Group were extubated than in the Control Group (100% versus 79%, p = 0.01). The rate of extubation failure was not signifiantly diffrent between the groups (18% in the Intervention Group versus 17% in the Control Group; relative risk 1.02; 95%CI 0.64 - 1.61; p = 1.00). The reintubation rate was lower in the Control Group (16% in the Intervention Group versus 11% in the Control Group; relative risk 1.15; 95%CI 0.74 - 1.82; p = 0.75). The need for tracheotomy was lower in the Intervention Group [4 (8%) versus 11 (25%) in the Control Group; relative risk 0.32; 95%CI 0.11 - 0.93; p = 0.04]. At Day 28, the patients in the Intervention Group had more ventilator-free days than those in the Control Group [28 (26 - 28) days versus 26 (19 - 28) days; p = 0.01]. The total duration of mechanical ventilation was shorter in the Intervention Group than in the Control Group [5 (2 - 13) days versus 9 (3 - 22) days; p = 0.01]. There were no diffrences in the length of intensive care unit stay, 28-day free from mechanical ventilation, hospital stay or 90-day mortality. Conclusion: Considering the limitations of our study, the application of a weaning protocol for neurocritical patients led to a high percentage of extubation, a reduced need for tracheotomy and a shortened duration of mechanical ventilation. However, there was no reduction in extubation failure or the 28-day free of from mechanical ventilation compared with the Control Group. ClinicalTrials.gov Registry:NCT03128086

RESUMO Objetivo: Investigar se o desmame por protocolo em pacientes neurocríticos reduz a taxa de falha de extubação (desfecho primário) e as complicações associadas (desfecho secundário) em comparação com o desmame convencional. Métodos: Realizou-se um estudo quase experimental em uma unidade de terapia intensiva médico-cirúrgica de janeiro de 2016 a dezembro de 2018. Foram incluídos pacientes com 18 anos de idade ou mais, com doença neurológica aguda e em ventilação mecânica > 24 horas. Todos os pacientes incluídos no estudo estavam prontos para o desmame, com nenhuma ou mínima sedação, escala de coma de Glasgow ≥ 9, estímulo ventilatório espontâneo, noradrenalina ≤ 0,2μgr/kg/minuto, fração inspirada de oxigênio ≤ 0,5, pressão expiratória positiva final ≤ 5cmH2O, pressão inspiratória máxima < -20cmH2O e pressão de oclusão < 6cmH2O. Resultados: Foram incluídos 94 dos 314 pacientes admitidos à unidade de terapia intensiva, sendo 50 no Grupo Intervenção e 44 no Grupo Controle. Não houve diferença significativa na falha do ensaio respiratório espontâneo (18% no Grupo Intervenção versus 34% no Grupo Controle, p = 0,12). Foram extubados mais pacientes no Grupo Intervenção do que no Controle (100% versus 79%; p = 0,01). A taxa de falha de extubação não foi significativamente diferente entre os grupos (18% no Grupo Intervenção versus 17% no Grupo Controle, risco relativo de 1,02; IC95% 0,64 - 1,61; p = 1,00). A taxa de reintubação foi menor no Grupo Controle (16% no Grupo Intervenção versus 11% no Grupo Controle; risco relativo de 1,15; IC95% 0,74 -1,82; p = 0,75). A necessidade de traqueotomia foi menor no Grupo Intervenção [4 (8%) versus 11 (25%) no Grupo Controle; risco relativo de 0,32; IC95% 0,11 - 0,93; p = 0,04]. Aos 28 dias, os pacientes do Grupo Intervenção tinham mais dias sem ventilador do que os do Grupo Controle [28 (26 - 28) dias versus 26 (19 - 28) dias; p = 0,01]. A duração total da ventilação mecânica foi menor no Grupo Intervenção do que no Controle [5 (2 - 13) dias versus 9 (3 - 22) dias; p = 0,01]. Não houve diferenças no tempo de internação na unidade de terapia intensiva, 28 dias sem ventilação mecânica, internação hospitalar ou mortalidade em 90 dias. Conclusão: Considerando as limitações de nosso estudo, a aplicação de um protocolo de desmame em pacientes neurocríticos levou à maior proporção de extubação, à menor necessidade de traqueotomia e à menor duração da ventilação mecânica. Entretanto, não houve redução na falha de extubação ou 28 dias sem ventilação mecânica em comparação com o Grupo de Controle. Registro ClinicalTrials.gov:NCT03128086

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Introducción: El destete o liberación de la ventilación mecánica (VM) es un proceso complejo y cuando es fallido aumentará los riesgos de complicaciones y gastos. Objetivo: Identificar factores de riesgo modificables para destete fallido en adultos con VM. Materiales y Métodos: Estudio de casos y controles realizado en pacientes ≥ 18 años ingresados en la unidad de cuidados intensivos de un hospital de tercer nivel. Los casos se identificaron como destete fallido (DF) del VM y los controles como destete simple. Se excluyeron los pacientes procedentes de otro hospital con VM. Los factores estudiados fueron el alto riesgo nutricional por el Nutric score modificado, la nutrición enteral tardía, el balance hídrico (BH) positivo y la ausencia de fisioterapia previos al destete. Se calculo el OR con una significancia < 0,05 para el análisis bivariado, multivariado y ajustado. Resultados: Se incluyeron 105 pacientes, 35 casos y 70 controles. El análisis bivariado encontró que el alto riesgo nutricional (OR = 2.5; IC 95% = 1,1 5,9; p=0,027) fue factor de riesgo, pero el análisis multivariado no lo confirmó. La nutrición enteral tardía (OR = 1,2; IC 95% = 0,4 3,4), el BH positivo (OR = 0,7; IC 95% = 0,3 1,7) y la ausencia de fisioterapia respiratoria (OR = 0,2; IC 95% = 0,004 0,011) no fueron factores de riesgo para DF. Conclusiones: El alto riesgo nutricional, la nutrición enteral tardía, el BH positivo y la ausencia de fisioterapia respiratoria antes del destete no fueron factores de riesgo para DF.

Background: Weaning of the mechanical ventilation (MV) is a complex process and when it fails, it can increase the risks of complications and expenses in health systems. Objective: To identify risk factors for failed weaning in adults with MV. Materials and Methods: Case-control study carried out in patients older than 18 years admitted to the intensive care unit of a tertiary care hospital. Cases were identified as failed weaning (FW) of MV, and controls were simple weaning. Patients from another hospital with MV were excluded. Risk factors studied were high nutritional risk by the modified Nutric score, late enteral nutrition, positive water balance (WB) and the absence of physical therapy prior to weaning. OR was calculated with a significance < 0.05 for bivariate, multivariate, and adjusted analysis. Results: 105 patients were included, 35 cases and 70 controls. The bivariate analysis found that high nutritional risk (OR = 2.5; 95% CI = 1.1 5.9; p = 0.027) was a risk factor, but the multivariate analysis did not confirm it. Late enteral nutrition (OR = 1.2; 95% CI = 0.4 3.4), positive WB (OR = 0.7; 95% CI = 0.3 1.7) and the absence of respiratory physiotherapy (OR = 0.2; 95% CI = 0.004 0.011) were not risk factors for FW. Conclusions: High nutritional risk, late enteral nutrition, positive BH and the absence of respiratory physiotherapy before weaning were not risk factors for FW.

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OBJECTIVE: To compare the Rapid Shallow Breathing Index (RSBI) obtained by the ventilometer and from mechanical ventilation parameters. METHODS: Randomized crossover trial, including 33 intubated patients, on mechanical ventilation for at least 24 hours, undergoing spontaneous breathing test. Patients were submitted to the measurement of RSBI by four methods: disconnected from the ventilator through the ventilometer; in Pressure Support Ventilation (PSV) mode at a pressure of 7.ßcm H2O; in Continuous Positive Airway Pressure (CPAP) mode at a pressure of 5.ßcmH2O with flow trigger; in CPAP mode at a pressure of 5.ßcmH2O with pressure trigger. RESULTS: No significant difference was detected between the RSBI obtained by the ventilometer and in the CPAP mode with flow and pressure triggers, however, in the PSV mode, the values were lower than in the other measurements (p.ß<.ß0.001). By selecting patients from the sample with higher RSBI (... 80 cycles.min-1.L-1), the value of the index obtained by the ventilometer was higher than that obtained in the three options of ventilation methods. CONCLUSION: The RSBI obtained in the CPAP mode at a pressure of 5.ßcmH2O, in both triggers types, did not differ from that measured by the ventilometer; it is, therefore, an alternative when obtaining it from mechanical ventilation parameters is necessary. However, in the presence of borderline values, the RSBI measured by ventilometer is recommended, as in this method the values are significantly higher than in the three ventilation modalities investigated.

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Abstract Objective: This study aimed to investigate whether neonatal intensive care units (NICUs) in Brazilian hospitals use a protocol for weaning from noninvasive ventilation (NIV), how this ventilatory support is withdrawn, and whether there is consensus among the methods used by the institutions. Methods: A cross-sectional survey was conducted from December 2020 to February 2021, based on responses to an electronic questionnaire, filled out by physical therapists working in NICU in Brazilian hospitals about the routine of physical therapy and the use of NIV and its weaning. Results: A total of 93 answers to the electronic questionnaire met the study criteria: 52.7% were from public health institutions, with an average of 15 NICU beds (15.2±15.9), 85% of the physical therapists worked exclusively in the NICU, 34.4% of the NICU had 24-h physical therapy care, 66.7% of the units use the continuous positive airway pressure (CPAP) as ventilatory mode, and 72% the nasal prong as NIV interface; 90% of the NICU physical therapists answered that their NICU had no NIV weaning protocol, with various methods of weaning reported, the most cited being pressure weaning. Conclusions: Most Brazilian NICUs have no NIV weaning protocol. The most used method among institutions, with or without a protocol, is pressure weaning. Although most of the participating physical therapists work exclusively in NICU, many hospitals do not have the recommended workload, which can be one of the negative factors in the organization of protocols and in the progress of ventilatory weaning.

RESUMO Objetivo Investigar se as unidades de terapia intensiva neonatal (UTIN) dos hospitais brasileiros utilizam protocolo para desmame de ventilação não invasiva (VNI), de que forma é realizada a retirada desse suporte ventilatório e se há consenso entre os métodos utilizados pelas instituições. Métodos Foi realizado um estudo de corte transversal de dezembro de 2020 a fevereiro de 2021, com base nas respostas a um questionário eletrônico, preenchidas por fisioterapeutas que trabalham em UTIN de hospitais brasileiros sobre a rotina da fisioterapia, o uso de VNI e seu desmame. Resultados Preencheram os critérios do estudo 93 respostas ao questionário eletrônico: 52,7% foram de instituições públicas de saúde, com média de 15 leitos de UTIN (15,2 ±15,9); 85% dos fisioterapeutas trabalhavam exclusivamente na UTIN, 34,4% das UTIN possuíam atendimento fisioterapêutico 24 horas por dia; 66,7% das unidades utilizam o Continuous Positive Airway Pressure (CPAP) como modo ventilatório e 72% a pronga nasal como interface de VNI; 90,3% dos fisioterapeutas responderam que suas UTIN não possuíam protocolo de desmame de VNI, com métodos de desmame relatados variados, sendo mais citado o desmame de pressão. Conclusões A maior parte das UTIN brasileiras não possui protocolo de desmame de VNI; o método mais utilizado entre as instituições que possuem ou não protocolo é o desmame de pressão. Apesar de a maioria dos voluntários trabalhar exclusivamente em UTIN, muitos hospitais não possuem a carga horária recomendada, o que pode ser um dos fatores negativos na organização dos protocolos e no andamento do desmame ventilatório.

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ABSTRACT Objective: We hypothesized that the use of mechanical insufflation-exsufflation can reduce the incidence of acute respiratory failure within the 48-hour post-extubation period in intensive care unit-acquired weakness patients. Methods: This was a prospective randomized controlled open-label trial. Patients diagnosed with intensive care unit-acquired weakness were consecutively enrolled based on a Medical Research Council score ≤ 48/60. The patients randomly received two daily sessions; in the control group, conventional chest physiotherapy was performed, while in the intervention group, chest physiotherapy was associated with mechanical insufflation-exsufflation. The incidence of acute respiratory failure within 48 hours of extubation was evaluated. Similarly, the reintubation rate, intensive care unit length of stay, mortality at 28 days, and survival probability at 90 days were assessed. The study was stopped after futility results in the interim analysis. Results: We included 122 consecutive patients (n = 61 per group). There was no significant difference in the incidence of acute respiratory failure between treatments (11.5% control group versus 16.4%, intervention group; p = 0.60), the need for reintubation (3.6% versus 10.7%; p = 0.27), mean length of stay (3 versus 4 days; p = 0.33), mortality at Day 28 (9.8% versus 15.0%; p = 0.42), or survival probability at Day 90 (21.3% versus 28.3%; p = 0.41). Conclusion: Mechanical insufflation-exsufflation combined with chest physiotherapy seems to have no impact in preventing postextubation acute respiratory failure in intensive care unit-acquired weakness patients. Similarly, mortality and survival probability were similar in both groups. Nevertheless, given the early termination of the trial, further clinical investigation is strongly recommended. Clinical Trials Register: NCT 01931228

RESUMO Objetivo: Verificar se o uso de insuflação-exsuflação mecânica pode reduzir a incidência da insuficiência respiratória aguda no período de 48 horas pós-extubação em pacientes com fraqueza adquirida em unidades de terapia intensiva. Métodos: Estudo prospectivo, randomizado, controlado e aberto. Os pacientes diagnosticados com fraqueza adquirida em unidade de terapia intensiva foram incluídos consecutivamente, com base em uma pontuação do Medical Research Council ≤ 48/60. Os pacientes receberam aleatoriamente duas sessões diárias; no grupo controle, realizou-se fisioterapia torácica convencional, enquanto no grupo intervenção, combinou-se fisioterapia torácica com insuflação-exsuflação mecânica. Avaliou-se a incidência de insuficiência respiratória aguda dentro de 48 horas após a extubação. Da mesma forma, avaliaram-se a taxa de reintubação, o tempo de permanência na unidade de terapia intensiva, a mortalidade aos 28 dias e a probabilidade de sobrevida aos 90 dias. O estudo foi interrompido após resultados de futilidade na análise intermediária. Resultados: Incluímos 122 pacientes consecutivos (n = 61 por grupo). Não houve diferença significativa na incidência de insuficiência respiratória aguda entre os tratamentos (11,5% no grupo controle versus 16,4% no grupo intervenção; p = 0,60), na necessidade de reintubação (3,6% versus 10,7%; p = 0,27), no tempo médio de internação (3 versus 4 dias; p = 0,33), na mortalidade aos 28 dias (9,8% versus 15,0%; p = 0,42) ou na probabilidade de sobrevida aos 90 dias (21,3% versus 28,3%; p = 0,41). Conclusão: A insuflação-exsuflação mecânica associada à fisioterapia torácica parece não ter impacto na prevenção da insuficiência respiratória aguda pós-extubação em pacientes com fraqueza adquirida na unidade de terapia intensiva. Da mesma forma, a mortalidade e a probabilidade de sobrevida foram semelhantes em ambos os grupos. No entanto, devido ao término precoce do estudo, recomenda-se enfaticamente uma investigação clínica mais aprofundada. Registro Clinical Trials: NCT 01931228

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ABSTRACT Objective: To assess the outcome of extubation in COVID-19 patients and the use of noninvasive ventilation in the weaning process. Methods: This retrospective, observational, single-center study was conducted in COVID-19 patients aged 18 years or older who were admitted to an intensive care unit between April 2020 and December 2021, placed under mechanical ventilation for more than 48 hours and progressed to weaning. Early extubation was defined as extubation without a spontaneous breathing trial and immediate use of noninvasive ventilation after extubation. In patients who underwent a spontaneous breathing trial, noninvasive ventilation could be used as prophylactic ventilatory assistance when started immediately after extubation (prophylactic noninvasive ventilation) or as rescue therapy in cases of postextubation respiratory failure (therapeutic noninvasive ventilation). The primary outcome was extubation failure during the intensive care unit stay. Results: Three hundred eighty-four extubated patients were included. Extubation failure was observed in 107 (27.9%) patients. Forty-seven (12.2%) patients received prophylactic noninvasive ventilation. In 26 (6.8%) patients, early extubation was performed with immediate use of noninvasive ventilation. Noninvasive ventilation for the management of postextubation respiratory failure was administered to 64 (16.7%) patients. Conclusion: We found that COVID-19 patients had a high rate of extubation failure. Despite the high risk of extubation failure, we observed low use of prophylactic noninvasive ventilation in these patients.

RESUMO Objetivo: Avaliar o desfecho da extubação em pacientes com COVID-19 e o uso da ventilação não invasiva no processo de desmame. Métodos: Este estudo retrospectivo, observacional e unicêntrico foi realizado em pacientes com COVID-19 com 18 anos ou mais, internados em uma unidade de terapia intensiva entre abril de 2020 e dezembro de 2021, colocados sob ventilação mecânica por mais de 48 horas com progressão para o desmame. A extubação precoce foi definida como a extubação sem um teste de ventilação espontânea e com uso imediato de ventilação não invasiva após a extubação. Em pacientes submetidos a um teste de ventilação espontânea, a ventilação não invasiva poderia ser usada como assistência ventilatória profilática, quando iniciada imediatamente após a extubação (ventilação não invasiva profilática), ou como terapia de resgate em casos de insuficiência respiratória pós-extubação (ventilação não invasiva terapêutica). O desfecho primário foi falha de extubação durante a internação na unidade de terapia intensiva. Resultados: Foram incluídos 384 pacientes extubados. A falha de extubação foi observada em 107 (27,9%) pacientes. Quarenta e sete (12,2%) pacientes receberam ventilação não invasiva profilática. Em 26 (6,8%) pacientes, a extubação precoce foi realizada com o uso imediato de ventilação não invasiva. A ventilação não invasiva para o manejo da insuficiência respiratória pós-extubação foi administrada em 64 (16,7%) pacientes. Conclusão: Os pacientes com COVID-19 apresentaram alta taxa de falha de extubação. Apesar do alto risco de falha de extubação, observamos baixo uso de ventilação não invasiva profilática nesses pacientes.

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ABSTRACT Objective: To identify factors associated with prolonged weaning and mortality in critically ill COVID-19 patients admitted to ICUs and under invasive mechanical ventilation. Methods: Between March of 2020 and July of 2021, we retrospectively recorded clinical and ventilatory characteristics of critically ill COVID-19 patients from the day of intubation to the outcome. We classified the patients regarding the weaning period in accordance with established criteria. A logistic regression analysis was performed to identify variables associated with prolonged weaning and mortality. Results: The study involved 303 patients, 100 of whom (33.0%) had a prolonged weaning period. Most of the patients were male (69.6%), 136 (44.8%) had more than 50% of pulmonary involvement on chest CT, and 93 (30.6%) had severe ARDS. Within the prolonged weaning group, 62% died within 60 days. Multivariate analysis revealed that lung involvement greater than 50% on CT and delay from intubation to the first separation attempt from mechanical ventilation were significantly associated with prolonged weaning, whereas age and prolonged weaning were significantly associated with mortality. Conclusions: Prolonged weaning can be used as a milestone in predicting mortality in critically ill COVID-19 patients. Lung involvement greater than 50% on CT and delay from intubation to the first separation attempt from mechanical ventilation were identified as significant predictors of prolonged weaning. These results might provide valuable information for healthcare professionals when making clinical decisions regarding the management of critically ill COVID-19 patients who are on mechanical ventilation.

RESUMO Objetivo: Identificar fatores associados ao desmame prolongado e à mortalidade em pacientes críticos com COVID-19 admitidos em UTI e sob ventilação mecânica invasiva. Métodos: Entre março de 2020 e julho de 2021, registramos retrospectivamente as características clínicas e ventilatórias de pacientes críticos com COVID-19 desde o dia da intubação até o desfecho. Os pacientes foram classificados quanto ao período de desmame de acordo com critérios estabelecidos. Foi realizada análise de regressão logística para identificar variáveis associadas ao desmame prolongado e à mortalidade. Resultados: O estudo incluiu 303 pacientes, 100 dos quais (33,0%) apresentaram período de desmame prolongado. A maioria dos pacientes era do sexo masculino (69,6%), 136 (44,8%) apresentaram mais de 50% de acometimento pulmonar na TC de tórax, e 93 (30,6%) apresentaram SDRA grave. No grupo desmame prolongado, 62% foram a óbito em 60 dias. A análise multivariada revelou que o acometimento pulmonar maior que 50% na TC e a demora na primeira tentativa de retirada da ventilação mecânica após a intubação apresentaram associação significativa com o desmame prolongado, enquanto a idade e o desmame prolongado apresentaram associação significativa com a mortalidade. Conclusões: O desmame prolongado pode ser utilizado como marco na predição de mortalidade em pacientes críticos com COVID-19. O acometimento pulmonar maior que 50% na TC e a demora na primeira tentativa de retirada da ventilação mecânica após a intubação foram identificados como preditores significativos de desmame prolongado. Esses resultados podem fornecer informações valiosas para os profissionais de saúde na tomada de decisões clínicas sobre o manejo de pacientes críticos com COVID-19 e em ventilação mecânica.

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Abstract Objective: To compare the Rapid Shallow Breathing Index (RSBI) obtained by the ventilometer and from mechanical ventilation parameters. Methods: Randomized crossover trial, including 33 intubated patients, on mechanical ventilation for at least 24 hours, undergoing spontaneous breathing test. Patients were submitted to the measurement of RSBI by four methods: disconnected from the ventilator through the ventilometer; in Pressure Support Ventilation (PSV) mode at a pressure of 7 cm H2O; in Continuous Positive Airway Pressure (CPAP) mode at a pressure of 5 cmH2O with flow trigger; in CPAP mode at a pressure of 5 cmH2O with pressure trigger. Results: No significant difference was detected between the RSBI obtained by the ventilometer and in the CPAP mode with flow and pressure triggers, however, in the PSV mode, the values were lower than in the other measurements (p < 0.001). By selecting patients from the sample with higher RSBI (≥ 80 cycles.min−1.L−1), the value of the index obtained by the ventilometer was higher than that obtained in the three options of ventilation methods. Conclusion: The RSBI obtained in the CPAP mode at a pressure of 5 cmH2O, in both triggers types, did not differ from that measured by the ventilometer; it is, therefore, an alternative when obtaining it from mechanical ventilation parameters is necessary. However, in the presence of borderline values, the RSBI measured by ventilometer is recommended, as in this method the values are significantly higher than in the three ventilation modalities investigated.

Assuntos

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Abstract Introduction: Several risk factors associated with weaning failure may be observed in septic patients requiring invasive mechanical ventilation. Objective: To determine the risk factors associated with weaning failure in septic patients admitted to an intensive care unit (ICU) in Cali, Colombia, between January 2014 and June 2018. Materials and methods: Case-control study conducted in 315 patients who required mechanical ventilation for more than 48 hours and were distributed as follows: 105 cases (weaning failure) and 210 controls (successful weaning). Information about sociodemographic and clinical variables was obtained from their medical records. A bivariate analysis was performed to determine the association between each independent variable and weaning failure. A multivariate analysis was also carried out using a logistic regression model in which the variables with a p<0.20 in the bivariate analysis were entered. A significance level of p≤0.05 was considered. Results: Requiring mechanical ventilation for more than 7 days (OR: 15.13; 95%CI: 8.25-27.74), having a high APACHE II score (mortality risk >50%) on ICU admission (OR: 3.16; 95%CI: 1.73-5.77), and having diuresis ≤0.5 mL/kg/h (OR: 1.87; 95%CI: 1.0-3.50) were significantly associated with weaning failure. Conclusions: Requiring mechanical ventilation for more than 7 days, having diuresis ≤0.5ml/kg/h, as well as a high APACHE ll score on ICU admission were risk factors associated with failed weaning from mechanical ventilation in this study; however, age, blood urea nitrogen, creatinine, and positive fluid balance were not significantly associated with it, despite being described as risk factors in the literature.

Resumen Introducción. En pacientes sépticos con requerimiento de ventilación mecánica invasiva pueden presentarse diferentes factores de riesgo de destete ventilatorio fallido. Objetivo. Determinar los factores de riesgo de destete ventilatorio fallido en pacientes sépticos admitidos a una unidad de cuidados intensivos (UCI) de Cali, Colombia, entre enero de 2014 y junio 2018 Materiales y métodos. Estudio de casos y controles realizado en 315 pacientes que requirieron ventilación mecánica por más de 48 horas distribuidos así: 105 casos (destete fallido) y 210 controles (destete exitoso). La información sobre variables sociodemográficas y clínicas se obtuvo a partir de la revisión de historias clínicas. Se realizó un análisis bivariado para determinar las asociaciones de cada variable independiente con el destete fallido y un análisis multivariado mediante un modelo de regresión logística en el que se ingresaron las variables que en el análisis bivariado tuvieron un valor p<0.20. Se consideró un nivel de significancia de p≤0.05. Resultados. Haber requerido ventilación mecánica por más de 7 días (OR: 15.13; IC95% 8.25-27.74), tener un puntaje APACHE II alto (riesgo de mortalidad >50%) al ingreso a UCI (OR: 3.16; 95%IC: 1.73-5.77) y tener diuresis ≤0.5 mL/kg/h (OR: 1.87; IC95% 1.0-3.50) se asociaron significativamente con el destete ventilatorio fallido. Conclusiones. En el presente estudio, el requerimiento de ventilación mecánica mayor a 7 días, la diuresis ≤0.5 mL/kg/h y un puntaje APACHE II alto al ingreso a UCI fueron factores de riesgo para destete ventilatorio fallido, pero no se observó asociación con la edad, el nitrógeno ureico en sangre, la creatinina y el balance de líquidos positivos, a pesar de que estos han sido descritos como factores de riesgo en la literatura.

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RESUMO Objetivo: Verificar a relação entre área de secção transversa do reto femoral e excursão diafragmática com sucesso no desmame da ventilação mecânica em pacientes críticos crônicos com traqueostomia. Métodos: Este foi um estudo de coorte observacional prospectivo. Incluímos pacientes críticos crônicos (aqueles submetidos à colocação de traqueostomia após 10 dias de ventilação mecânica). A área de secção transversa do reto femoral e a excursão diafragmática foram obtidas por ultrassonografia realizada dentro das primeiras 48 horas após a traqueostomia. Medimos a área de secção transversa do reto femoral e a excursão diafragmática para avaliar sua associação com o desmame da ventilação mecânica, incluindo sua capacidade de prever o sucesso no desmame e a sobrevida durante toda a internação na unidade de terapia intensiva. Resultados: Foram incluídos 81 pacientes. Quarenta e cinco pacientes (55%) foram desmamados da ventilação mecânica. A mortalidade foi de 42% e 61,7% na unidade de terapia intensiva e hospitalar, respectivamente. O grupo que falhou em relação ao grupo que obteve sucesso no desmame apresentou menor área transversa do reto femoral (1,4 [0,8] versus 1,84 [0,76]cm2, p = 0,014) e menor excursão diafragmática (1,29 ± 0,62 versus 1,62 ± 0,51cm, p = 0,019). Quando a área de secção transversa do reto femoral ≥ 1,80cm2 e a excursão diafragmática ≥ 1,25cm era uma condição combinada, apresentava forte associação com sucesso no desmame (RC ajustada de 20,81; IC95% 2,38 - 182,28; p = 0,006), mas não com sobrevida na unidade de terapia intensiva (RC ajustada de 0,19; IC95% 0,03 - 1,08; p = 0,061). Conclusão: O sucesso no desmame da ventilação mecânica em pacientes críticos crônicos foi associado a medidas maiores de área de secção transversa do reto femoral e da excursão diafragmática.

ABSTRACT Objective: To verify the relationship between the rectus femoris cross-sectional area and diaphragmatic excursion with successful weaning from mechanical ventilation in chronic critically tracheostomized patients. Methods: This was a prospective observational cohort study. We included chronic critically ill patients (those who underwent tracheostomy placement after 10 days under mechanical ventilation). The rectus femoris cross-sectional area and diaphragmatic excursion were obtained by ultrasonography performed within the first 48 hours after tracheostomy. We measured rectus femoris cross-sectional area and diaphragmatic excursion to assess their association with weaning from mechanical ventilation, including their potential to predict successful weaning and survival throughout the intensive care unit stay. Results: Eighty-one patients were included. Forty-five patients (55%) were weaned from mechanical ventilation. The mortality rates were 42% and 61.7% in the intensive care unit and hospital, respectively. The fail group in relation to the success group at weaning presented a lower rectus femoris cross-sectional area (1.4 [0.8] versus 1.84 [0.76]cm2, p = 0.014) and lower diaphragmatic excursion (1.29 ± 0.62 versus 1.62 ± 0.51cm, p = 0.019). When rectus femoris cross-sectional area ≥ 1.80cm2 and diaphragmatic excursion ≥ 1.25cm was a combined condition, it had a strong association with successful weaning (adjusted OR = 20.81, 95%CI 2.38 - 182.28; p = 0.006) but not with intensive care unit survival (adjusted OR = 0.19, 95%CI 0.03 - 1.08; p = 0.061). Conclusion: Successful weaning from mechanical ventilation in chronic critically ill patients was associated with higher measurements of rectus femoris cross-sectional area and diaphragmatic excursion.

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Objetive: to describe a sample of tracheostomized patients requiring prolonged mechanical ventilation who were admitted to a weaning center, to analyze their evolution and to determine the predictors of weaning failure from mechanical ventilation and of mortality. Design: Design: an observational and retrospective cohort study was carried out, in the period between January 2005 and December 2017. Setting: weaning and rehabilitation center. Patients: all tracheostomized patients requiring mechanical ventilation who were admitted during the study period were included. Of 1027 patients admitted to the respiratory care service, a consecutive sample of 677 patients was analyzed. Main variables of interest: the main variables were mortality and weaning failure from mechanical ventilation. Results: : age older than 70 years (OR 1,461 95% CI 1,016-2,099), a cardiovascular history (OR 1,533 95% CI 1,050-2,237), admission due to respiratory disease (OR 1,538 95% CI 1,001-2,364) and presenting more than 105 days of hospitalization (OR 0,408 95% CI 0,261-0,637) were found as predictors of weaning failure. The predictors of mortality were, age over 70 years (OR 2,116 95% CI 1,491-3,004), history of cerebrovascular accident (OR 1,991 95% CI 1,255-3,158), admission to intensive care due to cardiorespiratory arrest (OR 5,821 95% CI 2,193-15,445) and presenting more than 64 days of hospitalization (OR 1, 63 95% CI 1,116-2,292). Conclusions: The data found in this study manage to describe factors associated with weaning and mortality of patients in a weaning and rehabilitation center.

Objetivos: describir una muestra de pacientes traqueostomizados con requerimiento de ventilación mecánica prolongada que ingresaron a un centro de desvinculación, analizar su evolución y determinar los predictores de fracaso de desvinculación de la ventilación mecánica y de mortalidad. Diseño: se realizó un estudio de cohorte observacional y retrospectivo, en el período comprendido entre enero del 2005 y diciembre del 2017. Ámbito: centro de desvinculación de la ventilación mecánica y de rehabilitación. Pacientes: se incluyeron a todos los pacientes traqueostomizados con requerimiento de ventilación mecánica, que ingresaron durante el periodo de estudio. De 1027 pacientes ingresados al servicio de cuidados respiratorios, se analizó una muestra consecutiva de 677 pacientes. Variables de interés principales: las variables principales fueron mortalidad y falla en la desvinculación de la ventilación mecánica. Resultados: Se encontraron como predictores del fracaso de la desvinculación la edad mayor a 70 años (OR 1.461 IC95% 1.016-2.099), tener antecedentes cardiovasculares (OR 1.533 IC95% 1.050-2.237), motivo de ingreso por afección respiratoria (OR 1.538 IC95% 1.001-2.364) y presentar más de 105 días de internación (OR 0.408 IC95% 0.261-0.637). Los predictores de mortalidad fueron, la edad mayor a 70 años (OR 2.116 IC95% 1.491-3.004), tener como antecedente un accidente cerebro-vascular (OR 1.991 IC95% 1.255-3.158), motivo de ingreso a terapia intensiva por paro cardiorrespiratorio (OR 5.821 IC95% 2.193-15.445) y presentar más de 64 días de internación (OR1.63 IC95% 1.116-2.292). Conclusión: Los datos hallados en este estudio logran describir factores asociados a la desvinculación y mortalidad de los pacientes en un centro de desvinculación.

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