RESUMEN

Postexercise hydration is fundamental to replace fluid loss from sweat. This study evaluated rehydration and gastrointestinal (GI) symptoms for each of three beverages: water (W), sports drink (SD), and skimmed, lactose-free milk (SLM) after moderate-intensity cycling in the heat. Sixteen college students completed three exercise sessions each to lose ≈2% of their body mass. They drank 150% of body mass loss of the drink assigned in randomized order; net fluid balance, diuresis, and GI symptoms were measured and followed up for 3 hr after completion of fluid intake. SLM showed higher fluid retention (∼69%) versus W (∼40%; p < .001); SD (∼56%) was not different from SLM or W (p > .05). Net fluid balance was higher for SLM (-0.26 kg) and SD (-0.42 kg) than W (-0.67 kg) after 3 hr (p < .001), resulting from a significantly lower diuresis with SLM. Reported GI disturbances were mild and showed no difference among drinks (p > .05) despite ingestion of W (1,992 ± 425 ml), SD (1,999 ± 429 ml), and SLM (1,993 ± 426 ml) in 90 min. In conclusion, SLM was more effective than W for postexercise rehydration, showing greater fluid retention for the 3-hr follow-up and presenting with low-intensity GI symptoms similar to those with W and SD. These results confirm that SLM is an effective option for hydration after exercise in the heat.

Asunto(s)

Bebidas , Ejercicio Físico , Fluidoterapia , Enfermedades Gastrointestinales , Leche , Equilibrio Hidroelectrolítico , Humanos , Masculino , Adulto Joven , Femenino , Fluidoterapia/métodos , Ejercicio Físico/fisiología , Animales , Lactosa/análisis , Adulto , Deshidratación , Agua/administración & dosificación , Estudios Cruzados , Ingestión de Líquidos , Ciclismo/fisiología , Diuresis , Calor , Fenómenos Fisiológicos en la Nutrición Deportiva

RESUMEN

BACKGROUND: To evaluate fluid balance, biomarkers of renal function and its relation to mortality in patients with acute kidney injury (AKI) diagnosed before, or within 24 h of intensive care unit admission. METHODS: A prospective cohort study considered 773 critically ill patients observed over six years. Pre-intensive care unit-onset AKI was defined as AKI diagnosed before, or within 24 h of intensive care unit admission. Body weight-adjusted fluid balance and fluid balance-adjusted biomarkers of renal function were measured daily for the first three days of intensive care unit admission. Primary outcome was mortality in the intensive care unit. RESULTS: Prevalence of pre-intensive care unit-onset AKI was 55.1%, of which 55.6% of cases were hospital-acquired and 44.4% were community-acquired. Fluid balance was higher in AKI patients than in non-AKI patients (p < 0.001) and had a negative correlation with urine output (p < 0.01). Positive fluid balance and biomarkers of renal function were independently related to mortality. Multivariate analysis identified the following AKI-related variables associated with increased mortality: (1) In AKI patients: type 1 cardiorenal syndrome (OR 2.00), intra-abdominal hypertension (OR 1.71), AKI stage 3 (OR 2.15) and increase in AKI stage (OR 4.99); 2) In patients with community-acquired AKI: type 1 cardiorenal syndrome (OR 5.16), AKI stage 2 (OR 2.72), AKI stage 3 (OR 4.95) and renal replacement therapy (OR 3.05); and 3) In patients with hospital-acquired AKI: intra-abdominal hypertension (OR 2.31) and increase in AKI stage (OR 4.51). CONCLUSIONS: In patients with pre-intensive care unit-onset AKI, positive fluid balance is associated with worse renal outcomes. Positive fluid balance and decline in biomarkers of renal function are related to increased mortality, thus in this subpopulation of critically ill patients, positive fluid balance is not recommended and renal function must be closely monitored.

Asunto(s)

Lesión Renal Aguda , Biomarcadores , Enfermedad Crítica , Unidades de Cuidados Intensivos , Equilibrio Hidroelectrolítico , Humanos , Lesión Renal Aguda/mortalidad , Lesión Renal Aguda/diagnóstico , Lesión Renal Aguda/fisiopatología , Lesión Renal Aguda/terapia , Estudios Prospectivos , Masculino , Femenino , Biomarcadores/sangre , Anciano , Persona de Mediana Edad , Unidades de Cuidados Intensivos/estadística & datos numéricos , Factores de Tiempo , Mortalidad Hospitalaria , Riñón/fisiopatología , Admisión del Paciente , Factores de Riesgo , Anciano de 80 o más Años

RESUMEN

Background and Objective: Dehydration and hyperhydration impact athletes' performance. Exploring the fluid balance concerning body composition might help estimate individual hydration requirements. This area of research, particularly regarding sodium losses, has been relatively understudied. We evaluated the sweat rate (SR), sweat sodium losses, and their relationship with body composition in professional soccer players in Cali, Colombia. Materials and Methods: Thirty-two male players, aged 24.3 (±5.2) years, from the Colombian main soccer league, underwent high-intensity training at 32 °C (with a relative humidity of 79%). The outcome variables included SR, calculated using weight loss and fluid intake; forearm sweat sodium concentration (FSCC), measured through the direct ion-selective electrode method; and estimated the predicted whole sweat sodium loss (PWSSL) in mmol. Predictor variables (body mass, fat, and muscle masses) were estimated using the Deborah Kerr anthropometry method. The association between predictors and outcomes was assessed using linear regression. Results: The mean FSCC, PWSSL, and SR were 26.7 ± 11.3 mmol/L, 43 ± 15.9 mmol/L, and 1.7 ± 0.5 L/h, respectively. Body mass positively predicted FSCC in unadjusted and age/fat-mass-adjusted models [Beta 1.28, 95% confidence interval (CI) 0.39-2.18, p = 0.006], and continued related to FSCC after adjustment for muscle mass with marginal significance [Beta 0.85, 95% CI -0.02 to 1.73, p = 0.056]. Muscle mass was associated with the PWSSL in unadjusted and age/fat-mass-adjusted models [Beta 2.42, 95% CI 0.58-4.26, p = 0.012] and sustained an association with marginal statistical significance after adjustment for body mass [Beta 1.86, 95% CI -0.35 to 4.09, p = 0.097]. Conclusions: Under hot tropical weather conditions, FSCC was relatively low among the players. Body mass was better associated with the FSSC, and muscle mass better related to the PWSSL. Body and muscle masses could be regarded as potential factors to be explored in the estimation of individual sodium needs. However, further studies are required to validate and contrast our findings.

Asunto(s)

Fútbol , Sudor , Humanos , Masculino , Colombia , Composición Corporal , Antebrazo

RESUMEN

Replacement of fluid losses (dehydration) during sports activities in the heat has been investigated with different beverages. Bovine milk has been recommended for post-exercise rehydration, but its use during exercise may provoke gastrointestinal disorders. This study compared voluntary fluid intake, hydration, and incidence and severity of gastrointestinal (GI) disorders during exercise in the heat under three conditions: no drink (ND), water (W), and skimmed lactose-free milk (SM). Sixteen physically active university students exercised at 32 °C and 70% RH for 90 min at 60-75% HRmax while drinking W or SM ad libitum, or ND assigned at random. A questionnaire explored possible GI disorders. Ad libitum intake was higher (p < 0.05) for water (1206.2 mL) than milk (918.8 mL). Dehydration showed significant differences for SM versus W and ND (W = 0.28% BM; SM = -0.07% BM; ND = 1.38% BM, p < 0.05). Urine volume was significantly higher (p < 0.05) in the W condition (W = 220.4 mL; SM = 81.3 mL; ND = 86.1 mL). Thick saliva, belching, and abdominal pain were higher for SM, but scores were low. Skimmed lactose-free milk is a suitable, effective alternative to be consumed as a hydration beverage during moderate-intensity cycling in the heat for 90 min.

Asunto(s)

Deshidratación , Calor , Animales , Humanos , Deshidratación/prevención & control , Fluidoterapia , Leche , Agua

RESUMEN

BACKGROUND: Dopamine has a favorable therapeutic profile but has not been widely used to treat hypotension during microvascular breast reconstruction. The purpose of this study was to evaluate outcomes in patients who received dopamine during breast reconstruction using deep inferior epigastric perforator (DIEP) free flaps and compare them with patients who did not receive dopamine. METHODS: A single-center retrospective review was performed for patients who underwent breast reconstruction with DIEP free flaps between October 2018 and March 2020. Patient demographics, comorbidities, fluid balance, hospital stay, and adverse outcomes were compared between patients who received at least 1 h of dopamine (DA) and patients who did not receive dopamine (ND). Subgroup analyses were performed for bilateral procedures and patients who received dopamine. RESULTS: Twenty-five patients in the DA group and 43 patients in the ND group met the inclusion criteria. There were no flap-related complications. Patients who had dopamine initiated to maintain blood pressures had a higher total volume of intravenous fluid (ND:3.81L vs. DA:5.04L, p = 0.005). However, DA patients exhibited decreased fluid requirements (ND:839 mL/h vs. DA:479 mL/h, p = 0.004) and increased urine output (ND:98.0 mL/h vs. DA:340 mL/h, p = <0.001) once dopamine was initiated. Intraoperative urine output (ND:1.37 L vs. DA:3.48 L, p < 0.001) and rate (ND:1.9 ml/kg/h vs. DA:3.7 ml/kg/h, p < 0.001) were increased in the DA group. The fluid balance of patients undergoing bilateral procedures was closer to neutral for patients who received dopamine (ND:+3.43 L vs. DA:+2.26 L, p = 0.03). CONCLUSION: Dopamine is safe to use in microvascular breast reconstruction. It may be beneficial for hemodynamically labile patients by stabilizing blood pressure and facilitating a neutral fluid balance.

Asunto(s)

Neoplasias de la Mama , Hipotensión , Mamoplastia , Colgajo Perforante , Neoplasias de la Mama/etiología , Neoplasias de la Mama/cirugía , Dopamina/uso terapéutico , Arterias Epigástricas/cirugía , Femenino , Humanos , Hipotensión/tratamiento farmacológico , Hipotensión/etiología , Hipotensión/cirugía , Mamoplastia/efectos adversos , Mamoplastia/métodos , Colgajo Perforante/irrigación sanguínea , Estudios Retrospectivos

RESUMEN

Fluid overload (FO) is associated with higher rates of mortality and morbidity in pediatric and adult populations. The aim of this systematic review and meta-analysis was to investigate the association between FO and mortality in critically ill neonates. Systematic search of Ovid MEDLINE, EMBASE, Cochrane Library, trial registries, and gray literature from inception to January 2021. We included all studies that examined neonates admitted to neonatal intensive care units and described FO and outcomes of interest. We identified 17 observational studies with a total of 4772 critically ill neonates who met the inclusion criteria. FO was associated with higher mortality (OR, 4.95 [95% CI, 2.26-10.87]), and survivors had a lower percentage of FO compared with nonsurvivors (WMD, - 4.33 [95% CI, - 8.34 to - 0.32]). Neonates who did not develop acute kidney injury (AKI) had lower FO compared with AKI patients (WMD, - 2.29 [95% CI, - 4.47 to - 0.10]). Neonates who did not require mechanical ventilation on postnatal day 7 had lower fluid balance (WMD, - 1.54 [95% CI, - 2.21 to - 0.88]). FO is associated with higher mortality, AKI, and need for mechanical ventilation in critically ill neonates in the intensive care unit. Strict control of fluid balance to prevent FO is essential. A higher resolution version of the Graphical abstract is available as Supplementary information.

Asunto(s)

Lesión Renal Aguda , Insuficiencia Cardíaca , Desequilibrio Hidroelectrolítico , Adulto , Niño , Enfermedad Crítica , Femenino , Humanos , Recién Nacido , Unidades de Cuidado Intensivo Neonatal , Masculino , Equilibrio Hidroelectrolítico

RESUMEN

INTRODUCTION: Positive fluid status has been associated with a worse prognosis in intensive care unit (ICU) patients. Given the potential for errors in the calculation of fluid balance totals and the problem of accounting for indiscernible fluid losses, measurement of body weight change is an alternative non-invasive method commonly used for estimating body fluid status. The objective of the study is to compare the measurements of fluid balance and body weight changes over time and to assess their association with ICU mortality. METHODS: This prospective observational study was conducted in the 34-bed multidisciplinary ICU of a tertiary teaching hospital in southern Brazil. Adult patients were eligible if their expected length of stay was more than 48 hours, and if they were not receiving an oral diet. Clinical demographic data, daily and cumulative fluid balance with and without indiscernible water loss, and daily and total body weight changes were recorded. Agreement between daily fluid balance and body weight change, and between cumulative fluid balance and total body weight change were calculated. RESULTS: Cumulative fluid balance and total body weight change differed significantly among survivors and non survivors respectively, +2.53L versus +5.6L (p= 0.012) and -3.05kg vs -1.1kg (p= 0.008). The average daily difference between measured fluid balance and body weight was +0.864 L/kg with a wide interval: -3.156 to +4.885 L/kg, which remained so even after adjustment for indiscernible losses (mean bias: +0.288; limits of agreement between -3.876 and +4.452 L/kg). Areas under ROC curve for cumulative fluid balance, cumulative fluid balance with indiscernible losses and total body weight change were, respectively, 0.65, 0.56 and 0.65 (p= 0.14). CONCLUSION: The results indicated the absence of correspondence between fluid balance and body weight change, with a more significant discrepancy between cumulative fluid balance and total body weight change. Both fluid balance and body weight changes were significantly different among survivors and non-survivors, but neither measurement discriminated ICU mortality.

RESUMEN

Decapods have successfully colonized changing coastal habitats throughout the world by adapting their behavior, physiology, and biochemistry. Biochemical reserves, such as lipids and fatty acids (FAs), play fundamental roles in this adaptation process. These energy reserves are key for the development of decapods and their composition mainly depends on the type and quality of food available in their habitats. This study evaluated the lipid content and FA composition of three tissues (hepatopancreas, gills, and muscle) in two widely distributed, semi-terrestrial coastal crab species in Chile, Cyclograpsus cinereus from the upper intertidal and Hemigrapsus crenulatus from estuaries. This evaluation aimed to assess the physiological role of the bioenergetic reserves of these crabs, which tolerate fluctuating environmental conditions. Our results showed that both species had a higher lipid content in the hepatopancreas and a lower lipid content in its gills and muscle. All three of the evaluated tissues in C. cinereus showed high contents of saturated fatty acids (SFAs), and its hepatopancreas displayed the highest contents of monounsaturated (MUFAs) and polyunsaturated fatty acids (PUFAs). In turn, H. crenulatus had the highest contents of MUFAs and PUFAs in its gills and muscle tissues, including an important amount of eicosapentaenoic acid (EPA). The FA content of C. cinereus may indicate an adaptive physiological response aimed at maintaining its cellular fluid balance during periods of desiccation in the upper intertidal zone. In contrast, the FAs found in H. crenulatus may be linked to the high activity of the sodium­potassium pump in its gills, in order to maintain osmoregulation in estuaries.

Asunto(s)

Adaptación Fisiológica , Braquiuros/fisiología , Ácidos Grasos/química , Lípidos/química , Aclimatación , Animales , Ecosistema , Ácido Eicosapentaenoico/metabolismo , Ácidos Grasos/metabolismo , Ácidos Grasos Insaturados/metabolismo , Branquias/metabolismo , Hepatopáncreas/metabolismo , Masculino , Modelos Biológicos , Músculos/metabolismo , Osmorregulación , Salinidad , Equilibrio Hidroelectrolítico

RESUMEN

Vasopressin has been used to augment blood pressure; however, cardiovascular effects after cardiac surgery have not been well established. The primary objective of this study was to survey the current literature and quantify the pooled effect of vasopressin on hemodynamic parameters in children after pediatric cardiac surgery. A systematic review was conducted to identify studies characterizing the hemodynamic effects of vasopressin after pediatric cardiac surgery. Studies were assessed and those of satisfactory quality with pre- and post-vasopressin hemodynamics for each patient were included in the final analyses. 6 studies with 160 patients were included for endpoints during the first 2 h of infusions. Patients who received vasopressin infusion had greater mean, systolic, and diastolic blood pressures and lower heart rates at 2 h after initiation. 8 studies with 338 patients were included for the effects at 24 h. Patients who received vasopressin infusion had lower central venous pressures and decreased lactate concentrations 24 h after initiation. A subset analysis for children with functionally univentricular hearts found significant decrease in inotrope score and central venous pressure. A subset analysis for neonates found significant decrease in inotrope score and fluid balance. Vasopressin leads to decrease in heart rate and increase in blood pressure in the first 2 h of initiation. Later effects include decrease in inotrope score, central venous pressure, fluid balance, and in lactate within the first 24 h. Findings vary in neonates and in those with functionally univentricular hearts although beneficial effects are noted in both.

Asunto(s)

Procedimientos Quirúrgicos Cardíacos/métodos , Cardiopatías Congénitas/cirugía , Vasoconstrictores/administración & dosificación , Vasopresinas/administración & dosificación , Presión Sanguínea/efectos de los fármacos , Preescolar , Femenino , Cardiopatías Congénitas/tratamiento farmacológico , Frecuencia Cardíaca/efectos de los fármacos , Hemodinámica/efectos de los fármacos , Humanos , Lactante , Recién Nacido , Infusiones Intravenosas , Ácido Láctico/sangre , Masculino , Cuidados Posoperatorios/métodos

RESUMEN

OBJECTIVES: Positive fluid balance is frequent in critically ill patients and has been considered a potential biomarker for acute kidney injury (AKI). This study aimed to evaluate positive fluid balance as a biomarker for the early detection of AKI in critically ill patients. METHODS: This was a prospective cohort study. The sample was composed of patients ≥18 years old who stayed ≥3 days in an intensive care unit. Fluid balance, urinary output and serum creatinine were assessed daily. AKI was diagnosed by the Kidney Disease Improving Global Outcome criteria. RESULTS: The final cohort was composed of 233 patients. AKI occurred in 92 patients (40%) after a median of 3 (2-6) days following ICU admission. When fluid balance was assessed as a continuous variable, a 100-ml increase in fluid balance was independently associated with a 4% increase in the odds of AKI (OR 1.04; 95% CI 1.01-1.08). Positive fluid balance categorized using different thresholds was always significantly associated with subsequent detection of AKI. The mixed effects model showed that increased fluid balance preceded AKI by 4 to 6 days. CONCLUSION: These results suggest that a positive fluid balance might be an early biomarker for AKI development in critically ill patients.

Asunto(s)

Humanos , Adulto , Enfermedad Crítica , Lesión Renal Aguda/diagnóstico , Equilibrio Hidroelectrolítico , Biomarcadores , Estudios Prospectivos , Unidades de Cuidados Intensivos

RESUMEN

Resumen: Introducción: El balance hídrico positivo y el agua extravascular pulmonar medida por termodilución transpulmonar son factores independientes de mortalidad. La inclusión del valor de agua extravascular pulmonar indexada (EVLWi) durante la reanimación inicial impacta en la cantidad de líquido administrado. Aunque no existen antecedentes, buscar una asociación entre ambos parámetros puede llevar a un balance hídrico global negativo guiado por la cantidad de EVLWi. En este estudio retrospectivo se buscó la asociación entre EVLWi y balance hídrico y su impacto en la mortalidad. Material y métodos: Se realizó un estudio retrospectivo de cohortes con 20 casos para establecer la asociación entre agua extravascular pulmonar indexada medida por termodilución transpulmonar y balance hídrico total a las 24, 48 y 72 horas, así como con la mortalidad a 30 días. Resultados: Un valor de corte > 11 mL/kg de EVLWi se asoció con un incremento de la mortalidad; a las 24 horas RR 8.0 (95% IC 1.2146-52.6944, p = 0.0306), a las 48 horas RR 4.3778 (95% IC 1.1643-15.7177, p = 0.0286) y a las 72 horas con RR 3.5000 (95% IC 0.9497-12.8983, p = 0.0598). El valor de corte del balance hídrico fue ≥ 3.5 L, sin asociación con la mortalidad RR 0.1789 (95% IC 0.0125-2.5668, p = 0.2054) a las 24 horas, RR 0.5000 (95% IC 0.0854-2.9258, p = 0.4419) a las 48 horas y RR 0.3750 (95% IC 0.0610-2.3059, p = 0.2897) a las 72 horas. La asociación entre balance hídrico total y EVLWi fue r (2) Pearson = 0.01269. Conclusiones: El EVLWi > 11 mL/kg se asoció a un incremento en la mortalidad, a diferencia del balance hídrico. No encontramos correlación entre el balance hídrico y el EVLWi.

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Abstract: Introduction: Positive fluid balance and extravascular lung water index (EVLWi) quantified by transpulmonary thermodilution have been important independent mortality prognostic factors. Including EVLWi to guide initial fluid reanimation therapy has a high impact in the amount of administered fluid. Although there is not enough evidence, search for an association between EVLWi and fluid balance could lead to a negative fluid balance driven by EVLWi to improve survival rates. In this retrospective study we search for the association between EVLWi, fluid balance and its impact on mortality. Material and methods: Retrospective, cohort study of 20 cases. We looked for any association between EVLWi by transpulmonary thermodilution and daily fluid balance at 24, 48 and 72 hours and reviewed mortality at 30 days. Results: An EVLWi cutoff value of > 11 mL/kg was associated with a higher mortality; on the first 24 hours with an RR 8.0 (95% CI 1.2146-52.6944, p = 0.0306), at 48 hours RR 4.3778 (95% CI 1.1643-15.7177, p = 0.0286) and at 72 hours RR 3.5000 (95% CI 0.9497-12.8983 p = 0.0598). Fluid balance cutoff value was established at ≥ 3.5 L, but we can't find any association with mortality, RR 0.1789 (95% CI 0.0125-2.5668, p = 0.2054) at 24 hours, RR 0.5000 (95% CI 0.0854-2.9258, p = 0.4419) at 48 hours y RR 0.3750 (95% CI 0.0610-2.3059, p = 0.2897) at 72 hours. The correlation between fluid balance and EVLWi was negative, Pearson's r (2) = 0.01269. Conclusions: EVLWi was associated to a higher mortality. We could not demonstrate an association between fluid balance and EVLWi.

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Resumo: Introdução: O balanço hídrico positivo e a água extravascular pulmonar medida por termodiluição transpulmonar são fatores independentes da mortalidade. A inclusão do valor de água extravascular pulmonar indexada (EVLWi) durante a ressuscitação inicial impacta a quantidade de fluido entregue. Embora não haja precedente, buscar uma associação entre os dois parâmetros pode levar a um balanço hídrico global negativo guiado pela quantidade de EVLWi. Neste estudo retrospectivo, buscou-se a associação entre EVLWi e balanço hídrico e seu impacto na mortalidade. Material e métodos: Foi realizado um estudo de coorte retrospectivo com 20 casos para estabelecer a associação entre a água pulmonar extravascular indexada medida por termodiluição transpulmonar e balanço hídrico total em 24, 48 e 72 horas, bem como mortalidade em 30 dias. Resultados: Um valor de corte > 11 mL/kg de EVLWi foi associado a um aumento na mortalidade; às 24 horas RR 8.0 (95% IC 1.2146-52.6944, p = 0.0306), 48 horas RR 4.3778 (95% IC 1.1643-15.7177, p = 0.0286) e 72 horas com RR 3.5000 (95% IC 0.9497-12.8983 p = 0.0598). O valor de corte do balanço hídrico foi ≥ 3.5 L, sem associação com mortalidade RR 0.1789 (IC 95% 0.0125-2.5668, p = 0.2054) em 24 horas, RR 0.5000 (IC 95% 0.0854-2.9258 p = 0.4419) em 48 horas e RR 0.3750 (IC 95% 0.0610-2.3059 p = 0.2897) às 72 horas. A associação entre balanço hídrico total e EVLWi foi r 2 Pearson = 0.01269. Conclusões: EVLWi > 11 mL/kg foi associado a um aumento da mortalidade, em contraste com o balanço hídrico. Não encontramos correlação entre o balanço hídrico e o EVLWi.

RESUMEN

INTRODUCTION: Age and inhalation injury are important risk factors for acute respiratory distress syndrome (ARDS) in the burned patient; however, the impact of interventions such as mechanical ventilation, fluid balance (FB), and packed red blood cell transfusion remains unclear. The purpose of this study was to determine the incidence of moderate and severe ARDS and its risk factors among burn-related demographic variables and clinical interventions in mechanically ventilated burn patients. Risk factors for death within 28 days were also evaluated. METHOD: A prospective longitudinal study was carried out over a period of 30 months between July 2015 and December 2017. Patients older than 18 years, with a burn injury and under mechanical ventilation were included. The outcomes of interest were diagnosis of ARDS up to seven days after admission and death within 28 days. The proportional Cox regression risk model was used to obtain the hazard ratio for each independent variable. RESULTS: The cases of 61 patients were analyzed. Thirty-seven (60.66%) of the patients developed ARDS. The groups of patients with or without ARDS did not present differences regarding age, sex, burned body surface, or prognostic scores. Factors independently related to the occurrence of ARDS were age (hazard ratio [HR] = 1.04; 95% confidence interval [CI] 1.02-1.06; P < 0.001), inhalation injury (HR = 2.50; 95% CI 1.25-5.02; P = 0.01), and static compliance (HR = 0.97; 95% CI 0.94-0.99; P = 0.03). Tidal volume, driving pressure, acute renal injury, and FB between days 1 and 7 were similar in both groups. Accumulated FBs of 48, 72, 96, and 168 hours were also similar. Mortality at 28 days was 40.98% (25 patients). ARDS (HR = 3.63, 95% CI 1.36 to 9.68; P = 0.01) and burned body surface area (HR = 1.03, 95% CI 1.02 to 1.05; P < 0.001) were associated with death in 28 days. CONCLUSION: ARDS was a frequent complication and a risk factor for death in patients under mechanical ventilation, with large burned areas. Age and inhalation injury were independent factors for ARDS. Current tidal volume, driving pressure, red blood cell transfusion, acute renal injury, and FB were not predictors of ARDS.

RESUMEN

The impact of the use of loop diuretics to prevent cumulative fluid balance in non-oliguric patients is uncertain. This is a retrospective study to estimate the association of time-averaging loop diuretic exposure in a large population of non-cardiac, critically ill patients with a positive fluid balance (> 5% of body weight). The exposure was loop diuretic and the main outcomes were 28-day mortality, severe acute kidney injury and successful mechanical ventilation weaning. Time-fixed and daily time-varying variables were evaluated with a marginal structural Cox model, adjusting bias for time-varying exposure and the presence of time-dependent confounders. A total of 14,896 patients were included. Patients receiving loop diuretics had better survival (unadjusted hazard ratio 0.56, 95%CI 0.39-0.81 and baseline variables adjusted hazard ratio 0.53, 95%CI 0.45-0.62); after full adjusting, loop diuretics had no association with 28-day mortality (full adjusted hazard ratio 1.07, 95%CI 0.74-1.54) or with reducing severe acute kidney injury occurrence during intensive care unit stay - hazard ratio 1.05 (95%CI 0.78-1.42). However, we identified an association with prolonged mechanical ventilation (hazard ratio 1.59, 95%CI 1.35-1.89). The main results were consistent in the sub-group analysis for sepsis, oliguria and the study period (2002-2007 vs. 2008-2012). Also, equivalent doses of up to 80 mg per day of furosemide had no significant association with mortality. After adjusting for time-varying variables, the time average of loop diuretic exposure in non-cardiac, critically ill patients has no association with overall mortality or severe acute kidney injury; however, prolonged mechanical ventilation is a concern.

Asunto(s)

Cuidados Críticos/métodos , Diuréticos/uso terapéutico , Equilibrio Hidroelectrolítico , Lesión Renal Aguda/prevención & control , Enfermedad Crítica , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Respiración Artificial/estadística & datos numéricos , Estudios Retrospectivos , Análisis de Supervivencia

RESUMEN

BACKGROUND: The beverage hydration index (BHI) is a composite measure of fluid balance after consuming a test beverage relative to water. BHI is a relatively new measure that has been explored in young, but not yet older, adults. OBJECTIVE: The aim of this study was to investigate potential differences in BHI between euhydrated younger and older adults after drinking 4 different commercial beverages. We hypothesized that 1) older subjects would remain in positive fluid balance longer than young subjects after ingestion of each test beverage due to decreased urinary excretion rates, 2) glucose (glu)- and amino acid (AA)-based hydration beverages with sodium would have a BHI greater than water in both groups, and 3) the traditional 2-h postingestion BHI may be inappropriate for older adults. METHODS: On 5 separate visits, 12 young (23 ± 3 yr, 7 M/5F) and 12 older (67 ± 6 yr, 5 M/7F) subjects consumed 1 L of distilled water, G-20 (6% CHO, 20 mmol/L Na+), G-45 (2.5% CHO, 45 mmol/L Na+), AA-30 (5 AAs, 30 mmol/L Na+), or AA-60 (8 AAs, 60 mmol/L Na+) over 30 min. Blood and urine samples were collected before ingestion and at 0, 60, 120, 180, and 240 min postingestion with additional venous blood sampling at 5, 10, 15, and 30 min postingestion. RESULTS: In young subjects, BHI increased with increasing beverage Na+ concentration, and AA-60 had the highest BHI (AA-60 = 1.24 ± 0.10 compared with water = 1.00, P = 0.01). For older subjects, BHI was highest in AA-30 (AA-30; 1.20 ± 0.13 compared with water, P < 0.01) and was still in flux beyond 2 h in AA-60 (P < 0.05). CONCLUSIONS: Beverage Na+ content progressively increased BHI in young adults independent of glucose or AA content. For older adults, the AA-30 beverage had the highest BHI. A 4-h BHI may be more appropriate for older adults due to attenuated urine excretion rates. This trial was registered at clinicaltrials.gov as NCT03559101.

Asunto(s)

Bebidas/análisis , Deshidratación/metabolismo , Equilibrio Hidroelectrolítico , Adulto , Anciano , Aminoácidos/orina , Femenino , Glucosa/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Agua/metabolismo , Adulto Joven

RESUMEN

INTRODUCTION: Hemodynamic optimization is a main goal in the management of critically ill patients. Right ventricular function, renal failure and fluid balance are part of this process. Our goal is to analysis those, after the initial resuscitation. MATERIAL AND METHODS: A prospective, observational study was performed with all the patients admitted to a Medical Service of Intensive Care of a Tertiary, University Hospital. All patients analyzed required mechanical ventilation as a support for their underling pathology. All consecutive patients admitted to the unit under mechanical ventilation were collected, in the absence of shock, with the expectation of remaining under mechanical ventilation for at least 24 more hours after data collection. The incidence of right ventricular failure according to the defined parameters, renal failure, and fluid balance were described. We had described its association with mechanical ventilation and mortality. RESULTS: A total of 30 patients were selected. Right ventricular failure was observed in 16.6% of patients (5/30). There was no statistically significant association with the need of tracheotomy, renal failure or mortality. It was not associated with longer average stay, days of mechanical ventilation or higher severity scores. 40% of the patients presented acute renal failure. Renal failure was not associated statistically significant with the need of tracheotomy or failure in scheduled extubation, however, it was associated with higher mortality. Patients requiring mechanical ventilation with normal creatinine values ​​after initial resuscitation, had a mortality rate of 28.5% in comparison to patients who had altered values in which the mortality rate was 77.7%, (p < 0.018). Regarding the post-resuscitation net fluid balance, no statistically significant differences were found in the comparison of means between survivors and non survivors, with renal failure or right ventricular failure. No even was it associated with higher mortality. CONCLUSIONS: Right ventricular failure, despite not being associated with mortality, days of mechanical ventilation or failure in extubation in a statistically significant way, presents an incidence of 16.6% in patients connected to mechanical ventilation admitted to a polyvalent icu. Acute renal failure is associated in a statistically significant way with mortality in our sample. We had not found association between fluid overload and renal failure in our sample.

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INTRODUCCIÓN: La optimización hemodinámica es piedra angular en el manejo del enfermo crítico. La función ventricular derecha, el fallo renal y el balance hídrico son parte de este proceso. Nuestro objetivo es su análisis tras la resucitación inicial. MATERIAL Y MÉTODOS: Se realiza un estudio prospectivo, observacional, con todos los enfermos que ingresan en un Servicio médico de Medicina Intensiva de un Hospital Terciario y Universitario. Todos los enfermos analizados precisan ventilación mecánica como soporte de su patología. Se recogen todos los enfermos consecutivos ingresados en la unidad bajo ventilación mecánica, en ausencia de shock, con previsión de permanecer bajo ventilación mecánica al menos 24 horas más tras la recogida de datos. Se describe la incidencia de fallo ventricular derecho según los parámetros definidos, fallo renal, balance. Describiremos también su asociación con ventilación mecánica, mortalidad. RESULTADOS: Se seleccionaron un total de 30 pacientes. Se objetivó fallo ventricular derecho en el 16,6% de los pacientes (5/30). No se asoció de forma estadísticamente significativa a la necesidad de traqueotomía, fallo renal o mortalidad. Tampoco se asoció a mayor estancia media, días de ventilación mecánica o índices de gravedad mayores. El 40% de los pacientes presentaron fallo renal agudo. El fallo renal no se asocia de forma estadísticamente significativa con la necesidad de traqueotomía ni fracaso en la extubación, sin embargo, se asocia a mayor mortalidad. Los pacientes que precisan ventilación mecánica y presentan valores de creatinina normales tras resucitación inicial, cuentan con una tasa de mortalidad del 28,5% en comparación con aquellos pacientes que presentan cifras alteradas en las cuales la tasa de mortalidad es del 77,7%, (p < 0,018). Con respecto al balance hídrico neto post resucitación, no se encontraron diferencias estadísticamente significativas en la comparación de medias de los supervivientes, con fallo renal o fallo en ventrículo derecho. Tampoco se asoció a mayor mortalidad. CONCLUSIONES: El fallo ventricular derecho, pese a no asociarse a la mortalidad, días de ventilación mecánica o fallo en la extubación de forma estadísticamente significativa, presenta una incidencia del 16,6% en los enfermos conectados a ventilación mecánica ingresados en una uci polivalente. El fallo renal agudo sí se asocia de forma estadísticamente significativa a la mortalidad en nuestra muestra. No hemos encontrado asociación entre sobrecarga hídrica y fallo renal en nuestro estudio.

Asunto(s)

Humanos , Persona de Mediana Edad , Anciano , Resucitación , Equilibrio Hidroelectrolítico/fisiología , Disfunción Ventricular Derecha/fisiopatología , Lesión Renal Aguda/fisiopatología , Respiración Artificial/efectos adversos , Estudios Prospectivos , Disfunción Ventricular Derecha/epidemiología , Cuidados Críticos , Lesión Renal Aguda/epidemiología

RESUMEN

ANTECEDENTES: La reanimación hídrica intravenosa es esencial en el manejo de los pacientes hospitalizados, en especial en aquellos con enfermedad aguda o crítica. En la actualidad se proponen cuatro premisas con cuatro indicaciones, cuatro preguntas y cuatro fases para la reanimación hídrica intravenosa. OBJETIVO: El objetivo de esta revisión es dar a conocer esta propuesta de manejo en la reanimación hídrica intravenosa. CONCLUSIONES: Estas premisas de reanimación hídrica intravenosa coexisten de manera continua y con una variabilidad observada en el balance hídrico que se da a entender como un proceso dinámico, sin un patrón fijo temporal ni una escala de tiempo, el cual debe ser individualizado según el contexto clínico del paciente. BACKGROUND: Intravenous fluid therapy is essential in the management of hospitalized patients, especially in those with acute or critical illness. It has been proposed four premises, four indications, four questions, and four phases for guidance of this fluid therapy. OBJECTIVE: The objective of this manuscript is to review these new concepts of intravenous fluid therapy. CONCLUSION: These phases of intravenous fluid resuscitation coexist continuously and with a variability observed on fluid balance, is meant as a dynamic process, not as a temporary fixed pattern or a time scale and which must be individualized to the clinical context of patient.

Asunto(s)

Soluciones para Rehidratación/administración & dosificación , Resucitación/métodos , Humanos , Infusiones Intravenosas , Guías de Práctica Clínica como Asunto

RESUMEN

BACKGROUND: Dysnatremia has been associated with sports activity, especially long-distance running and endurance sports. High fluid intake is associated with hyponatremia. This study aims to evaluate dysnatremia and risk factors in half-marathon runners under warm and humid environmental conditions. METHODS: A cross-sectional study was performed among randomly selected runners in the 2017 Cali half marathon. Runners on diuretic therapy or with a known history of kidney disease were excluded. Participants went through a 2-day assessment. Previous medical history, training history, body mass index and running history were determined in the first assessment. Symptoms of dysnatremia and level of fluid consumption during the race were registered during the second assessment and post-run blood sampling for serum [Na+] was also undertaken. RESULTS: 130 runners were included in the study. The complete 2-day assessment was performed on 81 participants (62%) that were included in the final analysis. No cases of hyponatremia were found; instead, there were six cases of asymptomatic hypernatremia (7.4%). This hypernatremia had a statistically significant association with lower frequency (p=0.01) and volume of fluid intake during the race (water: p=0.02, Gatorade: p=0.04). CONCLUSION: Hyponatremia has been associated with high fluid intake in races performed under cool weather, such as the Boston Marathon during spring. In contrast, hypernatremia was found in a half marathon in warm and humid weather, which was associated with lower volume and frequency of fluid intake, suggesting that under warm and humid conditions, a median fluid intake of 900 mL during the race could prevent this event.

RESUMEN

AIM: To analyze whether fluid overload is an independent risk factor of adverse outcomes after liver transplantation (LT). METHODS: One hundred and twenty-one patients submitted to LT were retrospectively evaluated. Data regarding perioperative and postoperative variables previously associated with adverse outcomes after LT were reviewed. Cumulative fluid balance (FB) in the first 12 h and 4 d after surgery were compared with major adverse outcomes after LT. RESULTS: Most of the patients were submitted to a liberal approach of fluid administration with a mean cumulative FB over 5 L and 10 L, respectively, in the first 12 h and 4 d after LT. Cumulative FB in 4 d was independently associated with occurrence of both AKI and requirement for renal replacement therapy (RRT) (OR = 2.3; 95%CI: 1.37-3.86, P = 0.02 and OR = 2.89; 95%CI: 1.52-5.49, P = 0.001 respectively). Other variables on multivariate analysis associated with AKI and RRT were, respectively, male sex and Acute Physiology and Chronic Health Disease Classification System (APACHE II) levels and sepsis or septic shock. Mortality was shown to be independently related to AST and APACHE II levels (OR = 2.35; 95%CI: 1.1-5.05, P = 0.02 and 2.63; 95%CI: 1.0-6.87, P = 0.04 respectively), probably reflecting the degree of graft dysfunction and severity of early postoperative course of LT. No effect of FB on mortality after LT was disclosed. CONCLUSION: Cumulative positive FB over 4 d after LT is independently associated with the development of AKI and the requirement of RRT. Survival was not independently related to FB, but to surrogate markers of graft dysfunction and severity of postoperative course of LT.

RESUMEN

Resumen: Introducción: En el paciente con choque séptico, la administración excesiva de líquidos puede incrementar la morbilidad y mortalidad. El objetivo de este estudio fue evaluar la asociación entre el balance de líquidos, la lesión renal aguda y la mortalidad en pacientes con choque séptico. Métodos: Se realizó un estudio de casos y controles en una unidad de terapia intensiva pediátrica. Se comparó el balance de líquidos en las primeras 72 h y la presencia de lesión renal aguda en pacientes con diagnóstico de choque séptico que fallecieron contra pacientes que sobrevivieron a la misma patología. Se realizó un análisis univariado y multivariado. Resultados: Se incluyeron 45 casos y 45 controles en el análisis. La mortalidad se asoció con riesgo pediátrico de mortalidad (PRISM) ≥ 26 puntos (RM 7.5, IC 95% 2.8-18.7; p = 0.000), disfunción orgánica logística pediátrica (PELOD) ≥ 24 puntos (RM 11.0, IC 95% 4.1-29.4; p = 0.000), creatinina ≥ 0.65 mg/dl (RM 5.6, IC 95% 2.2-13.9; p = 0.000), lactato ≥ 2.5 mmol/l (RM 2.5, IC 95% 1.1-5.9; p = 0.033), SvO2 < 60% (RM 4.6, IC 95% 4.5-4.5; p = 0.001), balance positivo > 9% en 72 h (RM 4.3, IC 95% 1.6-11.7; p = 0.003), lesión renal aguda (RM 5.7, IC 95% 2.2-15.1; p = 0.000). En el modelo multivariado, PRISM ≥ 26 y PELOD ≥ 24 puntos permanecieron significativas. Conclusiones: En los pacientes que fallecieron por choque séptico, el modelo multivariado mostró una asociación con PRISM ≥26 y PELOD ≥24 y una tendencia hacia la asociación con SvO2 <60% y balance de líquidos positivo >9%.

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Abstract: Background: In patients with septic shock, excessive fluid administration can lead to increased morbidity and mortality. The aim of this study was to evaluate the association between fluid balance, acute kidney injury and mortality in patients with septic shock. Methods: A study of cases and controls was conducted in a Pediatric Intensive Care Unit. The fluid balance in the first 72 h and the presence of acute kidney injury was compared in patients diagnosed with septic shock who died against patients who survived the same condition. Univariate and multivariate analyses were performed. Results: Forty-five cases and forty-five controls were included in the analysis. Mortality was associated with Pediatric Risk of Mortality (PRISM III) ≥ 26 points (OR 7.5, 95% CI 2.8-18.7; p = 0.000), Pediatric Logistic Organ Dysfunction (PELOD) ≥ 24 points (OR 11.0, 95% CI 4.1-29.4; p = 0.000), creatinine ≥ 0.65 mg/dl (OR 5.6, 95% CI 2.2-13.9; p = 0.000), lactate ≥ 2.5 mmol/l (OR 2.5, 95% CI 1.1-5.9; p = 0.033), SvO2 < 60% (OR 4.6, 95% CI 4.5-4.5; p = 0.001), positive balance > 9% in 72 h (OR 4.3, 95% CI 1.6-11.7; p = 0.003), acute kidney injury (OR 5.7, 95% CI: 2.2-15.1; p = 0.000). In the multivariate model, the values of PRISM ≥26 and PELOD ≥24 points were significant. Conclusions: In patients who died due to septic shock, the multivariate model showed an association with PRISM ≥26 and PELOD ≥24 and a trend toward association with SvO2 <60% and positive balance of liquids > 9%.

Asunto(s)

Niño , Preescolar , Femenino , Humanos , Lactante , Masculino , Choque Séptico/terapia , Equilibrio Hidroelectrolítico/fisiología , Lesión Renal Aguda/etiología , Fluidoterapia/efectos adversos , Choque Séptico/mortalidad , Unidades de Cuidado Intensivo Pediátrico , Estudios de Casos y Controles , Análisis Multivariante , Estudios Retrospectivos , Mortalidad Hospitalaria , Fluidoterapia/métodos

RESUMEN

Introducción. En niños con sepsis, la sobrecarga hidrica como resultado de una terapia de resucitación agresiva o por la administración excesiva de fluidos puede afectar la función renal y aumentar la mortalidad. Objetivo. Determinar la asociación entre la sobrecarga hidrica y la tasa de falla renal en un grupo de niños con sepsis grave y shock séptico. Población y métodos. Estudio de cohortes prospectivo realizado en la Unidad de Cuidados Intensivos del Hospital Universitario de Pediatría "Dr. Agustín Zubillaga" (Barquisimeto, Estado Lara, Venezuela), entre marzo de 2013 y mayo de 2016, en niños con sepsis grave o shock séptico. Resultados. Un total de 149 niños fueron incluidos en el análisis. La sepsis predominó en el 59,7% de los casos; el promedio de edad fue 6,4 ± 3,3 años; el peso promedio fue 17,8 ± 3,6 kg; en el 30,2%, hubo sobrecarga hidrica y la mortalidad general fue 25,5%. Hubo falla renal en el 16,1% de los casos. Mediante un modelo de regresión logística binaria, se identificaron como predictores independientes de falla renal sobrecarga hidrica (OR 1,5; IC 95%: 1,2-4,9; p= 0,028) y shock mayor de dos días (OR 1,7; IC 95%: 1,3-6,3; p= 0,039). Además, se observó un incremento significativo del riesgo de mortalidad en los niños con falla renal y sobrecarga hidrica, según el método de Kaplan-Meier (p= 0,019). Conclusión. La sobrecarga hidrica y una duración del shock mayor de dos dias incrementan el riesgo de falla renal en niños criticamente enfermos con sepsis grave y shock séptico.

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Introduction. In children with sepsis, fluid overload as a result of an aggressive fluid replacement or excessive fluid administration may result in kidney impairment and increased mortality.Objective. To determine the association between fluid overload and the rate of kidney failure in a group of children with severe sepsis and septicshock. Population and methods. This was a prospective cohort study conducted in the intensive care unit of Hospital Universitario de Pediatría Dr. Agustín Zubillaga (Barquisimeto, Lara State, Venezuela), between March 2013 and May 2016, in children with severe sepsis or septic shock.Results. One hundred and forty-nine patients were included in the analysis. Sepsis predominated in 59.7% of cases; patients' average age was 6.4 ± 3.3 years old, their average weight was 17.8 ± 3.6 kg, 30.2% had fluid overload, and overall mortality was 25.5%. Kidney failure occurred in 16.1% of cases. A binary logistic regression model was used to identify fluid overload (odds ratio [OR]: 1.5; 95% confidence interval [CI]: 1.2-4.9, p = 0.028) and shock for more than 2 days (OR: 1.7; 95% CI: 1.3-6.3, p = 0.039) as independent predictors of kidney failure. In addition, a significant increase in the risk of mortality among children with kidney failure and fluid overload was observed as per the Kaplan-Meier method (p= 0.019). Conclusion. Fluid overload and shock for more than 2 days increase the risk for kidney failure in critically ill children with severe sepsis and septic shock.

Asunto(s)

Humanos , Preescolar , Niño , Sepsis/terapia , Insuficiencia Renal/etiología , Fluidoterapia/efectos adversos , Choque Séptico/terapia , Estudios de Cohortes , Insuficiencia Renal/epidemiología , Fluidoterapia/métodos