Positive Cumulative Fluid Balance Research Articles

Influence of fluid accumulation on major adverse kidney events in critically ill patients – an observational cohort study

BackgroundFluid accumulation (FA) is known to be associated with acute kidney injury (AKI) during intensive care unit (ICU) stay but data on mid-term renal outcome is scarce. The aim of this study was to investigate the association between FA at ICU day 3 and major adverse kidney events in the first 30 days after ICU admission (MAKE30).MethodsRetrospective, single-center cohort study including adult ICU patients with sufficient data to compute FA and MAKE30. We defined FA as a positive cumulative fluid balance greater than 5% of bodyweight. The association between FA and MAKE30, including its sub-components, as well as the serum creatinine trajectories during ICU stay were examined. In addition, we performed a sensitivity analysis for the stage of AKI and the presence of chronic kidney disease (CKD).ResultsOut of 13,326 included patients, 1,100 (8.3%) met the FA definition. FA at ICU day 3 was significantly associated with MAKE30 (adjusted odds ratio [aOR] 1.96; 95% confidence interval [CI] 1.67–2.30; p < 0.001) and all sub-components: need for renal replacement therapy (aOR 3.83; 95%CI 3.02–4.84), persistent renal dysfunction (aOR 1.72; 95%CI 1.40–2.12), and 30-day mortality (aOR 1.70; 95%CI 1.38–2.09), p all < 0.001. The sensitivity analysis showed an association of FA with MAKE30 independent from a pre-existing CKD, but exclusively in patients with AKI stage 3. Furthermore, FA was independently associated with the creatinine trajectory over the whole observation period.ConclusionsFluid accumulation is significantly associated with MAKE30 in critically ill patients. This association is independent from pre-existing CKD and strongest in patients with AKI stage 3.

Evaluating fluid overload in critically ill children.

To review the evaluation and management of fluid overload in critically ill children. Emerging evidence associates fluid overload, i.e. having a positive cumulative fluid balance, with adverse outcome in critically ill children. This is most likely the result of impaired organ function due to increased extravascular water content. The combination of a number of parameters, including physical, laboratory and radiographic markers, may aid the clinician in monitoring and quantifying fluid status, but all have important limitations, in particular to discriminate between intra- and extravascular water volume. Current guidelines advocate a restrictive fluid management, initiated early during the disease course, but are hampered by the lack of high quality evidence. Recent advances in early evaluation of fluid status and (tailored) restrictive fluid management in critically ill children may decrease complications of fluid overload, potentially improving outcome. Further clinical trials are necessary to provide the clinician with solid recommendations.

Revisiting Post-ICU Admission Fluid Balance Across Pediatric Sepsis Mortality Risk Strata: A Secondary Analysis of a Prospective Observational Cohort Study.

Post-ICU admission cumulative positive fluid balance (PFB) is associated with increased mortality among critically ill patients. We sought to test whether this risk varied across biomarker-based risk strata upon adjusting for illness severity, presence of severe acute kidney injury (acute kidney injury), and use of continuous renal replacement therapy (CRRT) in pediatric septic shock. Ongoing multicenter prospective observational cohort. Thirteen PICUs in the United States (2003-2023). Six hundred and eighty-one children with septic shock. None. Cumulative percent PFB between days 1 and 7 (days 1-7 %PFB) was determined. Primary outcome of interest was complicated course defined as death or persistence of greater than or equal to two organ dysfunctions by day 7. Pediatric Sepsis Biomarker Risk Model (PERSEVERE)-II biomarkers were used to assign mortality probability and categorize patients into high mortality (n = 91), intermediate mortality (n = 134), and low mortality (n = 456) risk strata. Cox proportional hazard regression models with adjustment for PERSEVERE-II mortality probability, presence of sepsis-associated acute kidney injury on day 3, and use of CRRT, demonstrated that time-dependent variable days 1-7%PFB was independently associated with an increased hazard of complicated course. Risk-stratified analyses revealed that each 10% increase in days 1-7 %PFB was associated with increased hazard of complicated course only among patients with high mortality risk strata (adjusted hazard ratio 1.24 (95% CI, 1.08-1.43), p = 0.003). However, this association was not causally mediated by PERSEVERE-II biomarkers. Our data demonstrate the influence of cumulative %PFB on the risk of complicated course in pediatric septic shock. Contrary to our previous report, this risk was largely driven by patients categorized as having a high mortality risk based on PERSEVERE-II biomarkers. Incorporation of such prognostic enrichment tools in randomized trials of restrictive fluid management or early initiation of de-escalation strategies may inform targeted application of such interventions among at-risk patients.

Impact of a cumulative positive fluid balance during the first three ICU days in patients with sepsis: a propensity score-matched cohort study

BackgroundThe optimal strategy for fluid management during the first few days of ICU in sepsis patients remains controversial. We aimed to investigate the impact of cumulative fluid balance during the first three days of ICU on the mortality of patients with sepsis.MethodsThis study analyzed prospectively collected data from the Korean Sepsis Alliance Database, which registered 11,981 sepsis patients from 20 hospitals. We selected three propensity score-matched cohorts consisting of patients with a negative or positive cumulative fluid balance during the first three ICU days: from ICU admission to the first midnight as the D1 cohort, until the second midnight as the D2 cohort, and until the third midnight as the D3 cohort. The propensity score for fluid balance was calculated using covariates including the amount of fluid output during the first three ICU days. The primary outcome was mortality at day 28 in the ICU.ResultsFrom a total of 11,981 patients, 2516 patients were included for propensity score matching. After matching in a 1:1 ratio, there were 483, 373, and 392 matched pairs of patients assigned to the D1, D2, and D3 cohorts, respectively. In the D1 cohort, there were no significant differences in mortality at day 28 (hazard ratio [HR], 1.17; 95% confidence interval [CI] 0.85–1.60; P = 0.354) between the two groups. The positive fluid groups in both the D2 (HR, 2.13; 95% CI 1.48–3.06; P < 0.001) and D3 (HR, 1.56; 95% CI 1.10–2.22; P = 0.012) cohorts had significantly higher mortality rates than the negative fluid groups.ConclusionsIn patients with sepsis, a positive fluid balance on the first ICU day was not associated with mortality at day 28. In contrast, cumulative positive fluid balances on the second and third ICU days were associated with higher mortality at day 28.

Weaning Difficulty in Patient with End Stage Renal Disease Acute with Respiratory Failure due to Pulmonary Edema and Pneumonia

Introduction: End Stage Renal Disease (ESRD) 5D patient have potential to respiratory failure due to excess fluid, thus increasing the incidence of repeated hospital admissions. Deaths were reported in about 15%– 30% cases, where 50%–60% of patients needed respiratory support with mechanical ventilation. About 30%– 40% of patients had complications in the weaning process from mechanical ventilation. Prolonged mechanical ventilation increased mortality and morbidity, the length of stay periods and costs. Case Report: This case report will discuss the difficult weaning from mechanical ventilation in patients with ESRD 5D who have respiratory failure due to edema pulmonary and pneumonia who were hospitalized at the Intensive Care Unit (ICU) of Hasan Sadikin Hospital - Bandung for 20 days Conclusion: Weaning difficulty due to accumulation positive fluid balance during hospitalization lead to longer use of mechanical ventilation and pulmonary infection get heavier. A positive cumulative fluid balance could be one factor of weaning difficulty

Prognostic Prediction Using the Clinical Data and Ultrasomics-Based Model in Acute Respiratory Distress Syndrome (ARDS) Combined with Acute Kidney Injury (AKI).

Objective A model was constructed based on clinical and ultrasomics features to predict the prognosis of patients in the respiratory intensive unit (RICU) who had acute respiratory distress syndrome (ARDS) combined with acute kidney injury (AKI). AKI ensues after ARDS in RICU ordinarily. The prognostic prediction tool was further developed on this basis. Methods We collected clinical and ultrasonic data from 145 patients who had ARDS combined with AKI and received continuous renal replacement therapy (CRRT) in the RICU of Xiangyang Hospital of Traditional Chinese Medicine from March 2016 to November 2019. The patients were divided into the survival group (n = 51) and the death group (n = 94), depending on the treatment outcome. The training set (n = 102) and the testing set (n = 43) were established based on patient data. The clinical and ultrasomics features and the CRRT parameters were compared between the two groups. The influence factors of death were analyzed by logistic regression, and four predictive models were established. The predictive performance of 4 models was compared using the R Software 4.1.3. The decision curve analysis graphs were drawn using the R language to determine the net benefit of each. Result Univariate analysis was conducted in the training set. The following risk factors for poor prognosis were identified: age, concurrent cancers, sequential organ failure assessment score (SOFA), number of organ dysfunctions, positive cumulative fluid balance at 72 h, time from ICU admission to CRRT, mean arterial pressure, oxygenation index, and gray-level size zone matrix, GLSZM (SumEntropy.239/SmallDependenceHighGrayLevelEmphasis.314/Maximum.327/Variance.338) (P < 0.05). Four models were built based on the above factors: clinical model, CRRT model, ultrasomics-based model, and combination model. Comparison using the MedCalc software indicated that the best predictive performance achieved with the combination model. The decision curve analysis also suggested that the combination model had the highest net benefit. Similar results were reported after validation on the testing set. Conclusion The prognosis of ARDS patients combined with AKI is usually poor. The combination model based on clinical and ultrasomics features had the highest predictive performance. This model can be used to improve the clinical outcome and prognosis.

A Positive Fluid Balance in the First Week Was Associated With Increased Long-Term Mortality in Critically Ill Patients: A Retrospective Cohort Study.

IntroductionEarly fluid balance has been found to affect short-term mortality in critically ill patients; however, there is little knowledge regarding the association between early cumulative fluid balance (CFB) and long-term mortality. This study aims to determine the distinct association between CFB day 1–3 (CFB 1–3) and day 4–7 (CFB 4–7) and long-term mortality in critically ill patients.Patients and MethodsThis study was conducted at Taichung Veterans General Hospital, a tertiary care referral center in central Taiwan, by linking the hospital critical care data warehouse 2015–2019 and death registry data of the Taiwanese National Health Research Database. The patients followed up until deceased or the end of the study on 31 December 2019. We use the log-rank test to examine the association between CFB 1–3 and CFB 4–7 with long-term mortality and multivariable Cox regression to identify independent predictors during index admission for long-term mortality in critically ill patients.ResultsA total of 4,610 patients were evaluated. The mean age was 66.4 ± 16.4 years, where 63.8% were men. In patients without shock, a positive CFB 4–7, but not CFB 1–3, was associated with 1-year mortality, while a positive CFB 1–3 and CFB 4–7 had a consistent and excess hazard of 1-year mortality among critically ill patients with shock. The multivariate Cox proportional hazard regression model identified that CFB 1–3 and CFB 4–7 (with per 1-liter increment, HR: 1.047 and 1.094; 95% CI 1.037–1.058 and 1.080–1.108, respectively) were independently associated with high long-term mortality in critically ill patients after adjustment of relevant covariates, including disease severity and the presence of shock.ConclusionsWe found that the fluid balance in the first week, especially on days 4–7, appears to be an early predictor for long-term mortality in critically ill patients. More studies are needed to validate our findings and elucidate underlying mechanisms.

ASSOCIATION BETWEEN 72-H CUMULATIVE FLUID BALANCE AND MORTALITY IN COVID-19 PATIENTS AT RSUD DR. SOETOMO SURABAYA

Cumulative fluid balance (CFB) with positive values mentioned in many studies is associated with mortality risk. In general, positive CFB was found in patients with sepsis, acute kidney injury (AKI), and heart failure. Meanwhile, COVID-19 is one of the causes of the conditions mentioned above. This study is a retrospective observational study using a cross-sectional method. Of the 97 samples obtained, 78 samples met the inclusion criteria. Obtained 69.2% male and 30.7% female. In this study, 45 (57.7%) patients had positive CFB, and 33 (42.3%) patients had negative CFB out of a total of 78 patients. The mortality rate was 32 (41.1%) patients who died from 78 patients in August 2020 s.d. October 2020. The optimal cut-off value for the amount of CFB in 72 hours is 516 ml (sensitivity 59.4%; specificity 71.7%). The result of the significant value of the number of CFB in 72 hours and mortality is (p) = 0.019 then p<0.05, which means there is a relationship between the number of CFBs in 72 hours and mortality in COVID-19 patients in the Ruang Isolasi Khusus (RIK) 1 RSUD Dr. Soetomo Surabaya Period August 2020-October 2020. Positive cumulative fluid balance (>516 ml) predicted to increase mortality of COVID-19 patients in Ruang Isolasi Khusus (RIK) 1 RSUD Dr. Soetomo Surabaya Period August 2020-October 2020

Positive Cumulative Fluids Balance Related to Mortality Events in Sepsis Patients Treated at Intensive Care Unit, Dr. Mohammad Hoesin General Hospital Palembang

Introduction. Sepsis is a syndrome that describes physiological dysfunction, pathological, and biochemistry caused by infection. Fluid balance is an indicator that can monitor input and output. This study was aimed to evaluate the relationship between positive cumulative fluid balance and the mortality rate of sepsis patients treated in the intensive care unit.&#x0D; Method: This study design is a retrospective study. The inclusion criteria consist of patients diagnosed with sepsis written in the medical record, 18-65 years old, and patients admitted in intensive care unit dr Moh. Hoesin General Hospital. Data were analyzed using SPSS 22.0 with the normality of data distribution, independent sample t-test, Mann-Whitney analysis, chi-square, Fisher’s Exact to measure the relationship, and using Medcalc version 14 application to measure cut-off value, ROC curve AUC, cross-sectional point, sensitivity, and specificity.&#x0D; Result. The result showed that characteristic between age (p=0,491), gender (p=0,703) did not differ significantly between survived and non-survived patient. Length of stay (p=0,002), balance (p=0,000), and ward unit (p=0,014) has a significant different between survived and non survived patient. In chi square analysis, p value=0,000with odds ratio 7,083. Cut-off value of ROC curve is -97 mL with AUC 0,844, sensitivity 76,1% and specificity 79,3%.&#x0D; Conclusion. Cumulative positive balance patient in the sepsis patient correlates with increased mortality in a sepsis patient in Dr. Mohammad Hoesin General Hospital Palembang.

Effect of Change in Body Weight on Clinical Outcomes in Critically Ill Patients.

BackgroundIntravenous fluid optimization is an essential component of managing patients in a critical care setting. A cumulative positive fluid balance is consistent with poor outcomes in patients admitted to the intensive care unit (ICU). The overall utility of net cumulative fluid balance as a surrogate for assessing fluid overload has been interrogated.Materials and methodsThis study was a prospective single-center observational study, which was done to correlate body weight changes with fluid balance in ICU patients and evaluate its impact on clinical outcomes. Inclusion criteria consisted of adult patients who were admitted to the critical care unit on specialized beds with integrated weighing scales between September 2017 and December 2018. The evaluation of the effect of changes in body weight on ICU survival was the primary objective of the study.ResultsWe enrolled 105 patients in this study. The ICU mortality was 23.80% with non-survivors showing more weight gain than the survivors. Statistically significant weight gain was documented in the non-survivors on days 3 and 4 (1.9 vs 1.05; p = 0.0084 and 2.6 vs 1.6; p = 0.0030) of ICU admission. Non-survivors had greater cumulative positive fluid balance on fourth, fifth, and sixth days post-ICU admission when compared to survivors (3586 vs 1659 mL, p = 0.0322; 5418 vs 1255 mL, p = 0.0017; and 5430 vs 2305 mL p = 0.0264, respectively). In multivariate regression analysis, cumulative fluid balance did not correlate with days on mechanical ventilation or length of stay in ICU. Changes in body weight and cumulative fluid balance showed a good correlation.ConclusionIn patients admitted to the ICU, weight gain on third and fourth days of admission is concordant with increased ICU mortality. Body weight changes were seen to correlate well with the cumulative fluid balance.How to cite this articleMishra RK, Pande A, Ramachandran R, Trikha A, Singh PM, Rewari V. Effect of Change in Body Weight on Clinical Outcomes in Critically Ill Patients. Indian J Crit Care Med 2021;25(9):1042–1048.

Delaying initiation of diuretics in critically ill patients with recent vasopressor use and high positive fluid balance

BackgroundFluid overload is associated with poor outcomes. Clinicians might be reluctant to initiate diuretic therapy for patients with recent vasopressor use. We estimated the effect on 30-day mortality of withholding or delaying diuretics after vasopressor use in patients with probable fluid overload. MethodsThis was a retrospective cohort study of adults admitted to ICUs of an academic medical centre between 2008 and 2012. Using a database of time-stamped patient records, we followed individuals from the time they first required vasopressor support and had >5 L cumulative positive fluid balance (plus additional inclusion/exclusion criteria). We compared mortality under usual care (the mix of care actually delivered in the cohort) and treatment strategies restricting diuretic initiation during and for various durations after vasopressor use. We adjusted for baseline and time-varying confounding via inverse probability weighting. ResultsThe study included 1501 patients, and the observed 30-day mortality rate was 11%. After adjusting for observed confounders, withholding diuretics for at least 24 h after stopping most recent vasopressor use was estimated to increase 30-day mortality rate by 2.2% (95% confidence interval [CI], 0.9–3.6%) compared with usual care. Data were consistent with moderate harm or slight benefit from withholding diuretic initiation only during concomitant vasopressor use; the estimated mortality rate increased by 0.5% (95% CI, –0.2% to 1.1%). ConclusionsWithholding diuretic initiation after vasopressor use in patients with high cumulative positive balance (>5 L) was estimated to increase 30-day mortality. These findings are hypothesis generating and should be tested in a clinical trial.

Timing and Clinical Significance of Fluid Overload in Pediatric Acute Respiratory Distress Syndrome.

Fluid overload is associated with worse outcomes in adult and pediatric acute respiratory distress syndrome. However, the time-course of fluid overload and its relationship to outcome has not been described. We aimed to determine the relationship between the timing of fluid overload and outcomes over the first 7 days after acute respiratory distress syndrome onset in children. Retrospective cohort study. Single tertiary care PICU. Intubated children with acute respiratory distress syndrome between 2011 and 2019. None. Daily and cumulative total fluid intake, total output, urine output, and fluid balance were collected for each 24-hour period from days 1 to 7 after acute respiratory distress syndrome onset. We tested the association between daily cumulative fluid metrics with PICU mortality and probability of extubation by 28 days using multivariable logistic and competing risk regression, respectively. In a subset of children, plasma was collected on day 1 and day 3 of acute respiratory distress syndrome and angiopoietin-2 quantified. Of 723 children with acute respiratory distress syndrome, 132 died (18%). In unadjusted analysis, nonsurvivors had higher cumulative fluid balance starting on day 3. In multivariable analysis, a positive cumulative fluid balance on days 5 through 7 was associated with increased mortality. Higher cumulative fluid balance on days 4 to 7 was associated with lower probability of extubation. Elevated angiopoietin-2 on day 1 predicted early (within 3 d) fluid overload greater than or equal to 10%, and elevated angiopoietin-2 on day 3 predicted late (between days 4 and 7) fluid overload. Fluid overload after day 4 of acute respiratory distress syndrome, but not before, was associated with worse outcomes. Higher angiopoietin-2 predicted subsequent fluid overload. Our results suggest that future interventions aimed at managing fluid overload may have differential efficacy depending on when in the time-course of acute respiratory distress syndrome they are initiated.

A longitudinal change of syndecan-1 predicts risk of acute respiratory distress syndrome and cumulative fluid balance in patients with septic shock: a preliminary study

BackgroundThe purpose of this study is to investigate the time course of syndecan-1 (Syn-1) plasma levels, the correlation between Syn-1 and organ damage development, and the associations of Syn-1 level with cumulative fluid balance and ventilator-free days (VFD) in patients with septic shock.MethodsWe collected blood samples from 38 patients with septic shock upon their admission to ICU and for the first 7 days of their stay. Syn-1 plasma level, acute respiratory distress syndrome (ARDS), other organ damage, VFD, and cumulative fluid balance were assessed daily.ResultsOver the course of 7 days, Syn-1 plasma levels increased significantly more in patients with ARDS than in those without ARDS. Patients with high levels of Syn-1 in the 72 h after ICU admission had significantly higher cumulative fluid balance, lower PaO2/FiO2, and fewer VFD than patients with low levels of Syn-1. Syn-1 levels did not correlate with sequential organ failure assessment score or with APACHE II score.ConclusionsIn our cohort of patients with septic shock, higher circulating level of Syn-1 of cardinal glycocalyx component is associated with more ARDS, cumulative positive fluid balance, and fewer VFD. Measurement of Syn-1 levels in patients with septic shock might be useful for predicting patients at high risk of ARDS.

Effect of positive cumulative fluid balance on postoperative complications after living donor liver transplantation: A retrospective analysis.

Background and Aims:Fluid administration during liver transplant (LT) surgery is controversial. Although adverse outcomes following positive intraoperative fluid balance have been reported, studies presenting the influence of cumulative postoperative fluid balance (CFB) on complications following LT are sparse. Patients with chronic liver disease tend to receive more fluid during and after surgery due to their unique physiological disease state. The aim of this study was to evaluate the influence of 48-hour CFB on the development of acute kidney injury (AKI) and pulmonary complications on day 4 after live donor LT.Methods:This retrospective study included 230 patients undergoing live donor LT. The effect of CFB on day 2 on AKI and pulmonary complications was analysed. Chi-square test, Fisher's exact test, samples t-test, Mann-Whitney U-test were used.Results:Bivariate analysis showed a lower graft vs recipient weight ratio (GRWR), sepsis (P < 0.001) and a higher 48-hour CFB after surgery significantly increased the development of AKI. For pulmonary complications, higher Model for End- stage Liver Disease-Na(MELD-Na) score, higher peak arterial lactate, higher 48-hour CFB (P = 0.016) and sepsis (P = 0.003) were found to be statistically significant. Upon multivariate analysis, CFB at 48 hours was significantly higher in patients suffering from pulmonary complications, and GRWR and sepsis were significant for AKI. For every one litre increase in CFB on day 2, the odds of pulmonary complications increased by 37%.Conclusion:A more positive CFB on day 2 increased the development of pulmonary complications and lower GRWR and sepsis increased the development of AKI.

Change in right ventricular systolic function after continuous renal replacement therapy initiation and renal recovery.

To describe the associations between right ventricular (RV) function and outcomes of patients with acute kidney injury (AKI) requiring continuous renal replacement therapy (CRRT). This is a retrospective study, conducted 2006-2015 at an academic hospital in USA. We included patients with AKI requiring CRRT who had paired echocardiograms within 2weeks before and after CRRT initiation. We defined improvement in RV systolic function as 2-point improvement on the semiquantitative scale. The cohort included 201 patients. The mean(±SD) age was 59(±16) years with 83(41%) female. The median time of the pre and post echocardiograms relative to CRRT initiation were-1day (IQR-3;0) prior to and 3days (IQR1;7) after CRRT initiation. Thirty-one (15%) patients showed an improvement in their RV function. Using a multivariable logistic regression model, improvement in RV systolic function was associated with lower odds of major adverse kidney events (composite of mortality, need for dialysis or persistently elevated serum creatinine) at 90days with odds ratio (OR) of 0.37(95%CI:0.17-0.84, p.016). Positive cumulative fluid balance was associated with lower odds of improvement in RV function (OR 0.95 per 1-l increase, p 0.045). Serial assessment of RV function among patients with AKI requiring CRRT could provide prognostic value.

Fluid Overload and Mortality in Adult Critical Care Patients-A Systematic Review and Meta-Analysis of Observational Studies.

Fluid administration in combination with the increase in vasopermeability induced by critical illness often results in significant fluid overload in critically ill patients. Recent research indicates that mortality is increased in patients who have received large volumes of fluids. We have systematically reviewed and synthesized the evidence on fluid overload and mortality in critically ill patients and have performed a meta-analysis of available data from observational studies. A systematic search was performed on PubMed, EmBase, and the Cochrane Library databases. All studies were eligible that investigated the impact of fluid overload (defined by weight gain > 5%) or positive cumulative fluid balance on mortality in adult critical care patients. We excluded animal studies and trials in pediatric populations (age < 16 years old), pregnant women, noncritically ill patients, very specific subpopulations of critically ill patients, and on early goal-directed therapy. Randomized controlled trials were only evaluated in the section on systematic review. Assessment followed the Cochrane/meta-analysis of observational trials in epidemiology guidelines for systematic reviews. A total of 31 observational and three randomized controlled trials including 31,076 ICU patients met the inclusion criteria. Only observational studies were included in the meta-analysis. Fluid overload and cumulative fluid balance were both associated with pooled mortality: after 3 days of ICU stay, adjusted relative risk for fluid overload was 8.83 (95% CI, 4.03-19.33), and for cumulative fluid balance 2.15 (95% CI, 1.51-3.07), at any time point, adjusted relative risk for fluid overload was 2.79 (95% CI, 1.55-5.00) and 1.39 (95% CI, 1.15-1.69) for cumulative fluid balance. Fluid overload was associated with mortality in patients with both acute kidney injury (adjusted relative risk, 2.38; 95% CI, 1.75-2.98) and surgery (adjusted relative risk, 6.17; 95% CI, 4.81-7.97). Cumulative fluid balance was linked to mortality in patients with sepsis (adjusted relative risk, 1.66; 95% CI, 1.39-1.98), acute kidney injury (adjusted relative risk, 2.63; 95% CI, 1.30-5.30), and respiratory failure (adjusted relative risk, 1.19; 95% CI, 1.03-1.43). The risk of mortality increased by a factor of 1.19 (95% CI, 1.11-1.28) per liter increase in positive fluid balance. This systematic review and meta-analysis of observational studies reporting adjusted risk estimates suggests that fluid overload and positive cumulative fluid balance are associated with increased mortality in a general population and defined subgroups of critically ill patients.

Positive cumulative fluid balance in the first 72 h is associated with adverse outcomes following heat stroke

Objective: The objective of the study was to determine the association between positive cumulative fluid balance following heat stroke (HS) and its impact on patient outcomes.Methods: A retrospective chart review of HS patients admitted to the emergent intensive care unit (ICU), Beijing Lu He Hospital, Capital Medical University, from 2015 to 2018 was conducted.Results: Forty-nine surviving HS patients met the inclusion criteria. Patients were divided into two groups based on the median duration of mechanical ventilation (MV). Patients with MV for more than 6 days were placed in the longer length of the MV group. Patients with MV for <6 days were placed in the shorter MV group. There were significant differences between the two groups regarding the fluid balance on day 2 (3040 ml vs. −533 ml, P = 0.017) and persistent cumulative fluid overload in the first 72 h (6112 ml vs. −46 ml, P = 0.04). Patients with a higher cumulative fluid overload in the first 72 h were more likely to receive a longer duration of MV (10.7 days vs. 3.2 days, P < 0.001) and ICU length of stay (22.5 days vs. 6.2 days, P < 0.001). Spearman analysis of fluid overload in the first 72 h and MV time showed that the correlation coefficient was 0.662. Binary logistic regression analysis showed that the positive cumulative fluid balance in the first 72 h (odds ratio [OR] = 1, 95% confidence interval [95% CI] = 0.99–1.01] and alanine aminotransferase (OR = 0.978, 95% CI = 0.95–0.99) were both independent risk factors for prolonged MV in patients with HS (P = 0.025, P = 0.026). There were also differences between groups regarding creatine kinase-MB (P = 0.01) and Glasgow Coma Scale scores (P = 0.033). The patients with a higher cumulative fluid overload in the first 72 h had larger sequential organ failure assessment cores. Based on the receiver operating characteristic analysis, the cumulative fluid overload in the first 72 h predicted the need for invasive MV with the area under the curve of 0.869 (P < 0.0001, 95% CI: 0.779–0.958) at a cutoff value >1685 ml (sensitivity: 86%; specificity: 78%).Conclusions: Fluid overload in the first 72 h was a predictor of prolonged MV and ICU length of stay in surviving HS patients. Maintaining cautious about fluid resuscitation for HS patients may be critical for improving patient outcomes.

Expiratory flow limitation in intensive care: prevalence and risk factors

BackgroundExpiratory flow limitation (EFL) is characterised by a markedly reduced expiratory flow insensitive to the expiratory driving pressure. The presence of EFL can influence the respiratory and cardiovascular function and damage the small airways; its occurrence has been demonstrated in different diseases, such as COPD, asthma, obesity, cardiac failure, ARDS, and cystic fibrosis. Our aim was to evaluate the prevalence of EFL in patients requiring mechanical ventilation for acute respiratory failure and to determine the main clinical characteristics, the risk factors and clinical outcome associated with the presence of EFL.MethodsPatients admitted to the intensive care unit (ICU) with an expected length of mechanical ventilation of 72 h were enrolled in this prospective, observational study. Patients were evaluated, within 24 h from ICU admission and for at least 72 h, in terms of respiratory mechanics, presence of EFL through the PEEP test, daily fluid balance and followed for outcome measurements.ResultsAmong the 121 patients enrolled, 37 (31%) exhibited EFL upon admission. Flow-limited patients had higher BMI, history of pulmonary or heart disease, worse respiratory dyspnoea score, higher intrinsic positive end-expiratory pressure, flow and additional resistance. Over the course of the initial 72 h of mechanical ventilation, additional 21 patients (17%) developed EFL. New onset EFL was associated with a more positive cumulative fluid balance at day 3 (103.3 ml/kg) compared to that of patients without EFL (65.8 ml/kg). Flow-limited patients had longer duration of mechanical ventilation, longer ICU length of stay and higher in-ICU mortality.ConclusionsEFL is common among ICU patients and correlates with adverse outcomes. The major determinant for developing EFL in patients during the first 3 days of their ICU stay is a positive fluid balance. Further studies are needed to assess if a restrictive fluid therapy might be associated with a lower incidence of EFL.

PREDICTING EXTUBATION FAILURE: A RETROSPECTIVE MULTIVARIABLE ANALYSIS

SESSION TITLE: Endotracheal Intubation: Getting In and Getting Out SESSION TYPE: Original Investigations PRESENTED ON: 10/23/2019 10:45 AM - 11:45 AM PURPOSE: Extubation failure occurs in 8-20% of ICU patients and several studies have analyzed individual factors to predict extubation success. However, there are no comprehensive data sets analyzing all the variables in predicting reintubation risk. The aim of this study is to develop an integrated prediction model for extubation failure using respiratory, cardiac, and neurological physiologic and laboratory clinical data. METHODS: We conducted a retrospective review of all the mechanically intubated patients ≥ 18 years who were intubated for ≥ 24 hours in the University of Maryland Medical Center Medical ICU and Midtown Campus ICU from 07/01/2017 - 06/30/2018. Patient who were ventilated via tracheostomy, had an unplanned extubation, or were reintubated for surgery were excluded. Data on exposure variables were obtained from the electronic medical record and the outcome variate was unplanned reintubation within 48 hours. Univariate and multivariable regression models were used to predict odds of extubation failure. RESULTS: We included a total of 1382 patients, with a mean age of 63 ± 17 years, and 63% were men. Two hundred and four extubation failures occurred within 48 hours. In the univariate model extubation failure was significantly associated with lower serum albumin (albumin < 2.5 g/dL, odds ratio [OR] = 6.1; 95% [CI], 3.04-14.66), lower hemoglobin (hemoglobin < 9.0 g/dL, OR = 10.2; 95% CI, 6.00-28.04), positive cumulative fluid balance (+1.5 L, OR = 7.2; 95 % CI 1.20 - 53.0) and lower GCS scores (GCS score ≤ 9, OR = 6.1; 95% CI = 1.15-32.34). Further multivariate logistic regression analysis revealed an association of delta RSBI > 90 (on PS 0/0) and extubation failure (odds ratio 5.56; 95% CI 1.263-16.462). CONCLUSIONS: Using a multivariable regression model, low serum album ( albumin < 2.5 g/dl), low hemoglobin ( Hgb < 9.0 g/dl), positive cumulative fluid balance (net positive ≥ 1500 ml), low GCS (≤ 9) and delta RSBI > 90 ( done off of positive pressure) are shown to be strong predictors of extubation failure. CLINICAL IMPLICATIONS: By using an integrative index combining all the significant parameters together, we can construct a predictive score for extubation failure. It warrants further exploration in a prospective study to help critical care providers to decide when extubation can be done more safely. DISCLOSURES: No relevant relationships by Moemen Eltelbany, source=Web Response No relevant relationships by Muhammad Sameed, source=Web Response Consultant relationship with Guidepoint Please note: $1-$1000 Added 03/14/2019 by Carl Shanholtz, source=Web Response, value=Consulting fee stock holder relationship with Teva Pharmaceuticals Please note: $1001 - $5000 Added 03/14/2019 by Carl Shanholtz, source=Web Response, value=stock iinvestor relationship with illumina Please note: $1001 - $5000 Added 03/14/2019 by Carl Shanholtz, source=Web Response, value=options No relevant relationships by Jennie Zhang, source=Web Response

154 compared to 54\xa0mmol per liter of sodium in intravenous maintenance fluid therapy for adult patients undergoing major thoracic surgery (TOPMAST): a single-center randomized controlled double-blind trial

PurposeTo determine the effects of the sodium content of maintenance fluid therapy on cumulative fluid balance and electrolyte disorders.MethodsWe performed a randomized controlled trial of adults undergoing major thoracic surgery, randomly assigned (1:1) to receive maintenance fluids containing 154 mmol/L (Na154) or 54 mmol/L (Na54) of sodium from the start of surgery until their discharge from the ICU, the occurrence of a serious adverse event or the third postoperative day at the latest. Investigators, caregivers and patients were blinded to the treatment. Primary outcome was cumulative fluid balance. Electrolyte disturbances were assessed as secondary endpoints, different adverse events and physiological markers as safety and exploratory endpoints.FindingsWe randomly assigned 70 patients; primary outcome data were available for 33 and 34 patients in the Na54 and Na154 treatment arms, respectively. Estimated cumulative fluid balance at 72 h was 1369 mL (95% CI 601–2137) more positive in the Na154 arm (p < 0.001), despite comparable non-study fluid sources. Hyponatremia < 135 mmol/L was encountered in four patients (11.8%) under Na54 compared to none under Na154 (p = 0.04), but there was no significantly more hyponatremia < 130 mmol/L (1 versus 0; p = 0.31). There was more hyperchloremia > 109 mmol/L under Na154 (24/35 patients, 68.6%) than under Na54 (4/34 patients, 11.8%) (p < 0.001). The treating clinicians discontinued the study due to clinical or radiographic fluid overload in six patients receiving Na154 compared to one patient under Na54 (excess risk 14.2%; 95% CI − 0.2–30.4%, p = 0.05).ConclusionsIn adult surgical patients, sodium-rich maintenance solutions were associated with a more positive cumulative fluid balance and hyperchloremia; hypotonic fluids were associated with mild and asymptomatic hyponatremia.