Renal replacement therapy with net fluid removal lowers intra-abdominal pressure and volumetric indices in critically ill patients (original) (raw)
Related papers
Net ultrafiltration intensity and mortality in critically ill patients with fluid overload
Critical care (London, England), 2018
Although net ultrafiltration (UF) is frequently used for treatment of fluid overload in critically ill patients with acute kidney injury, the optimal intensity of UF is unclear. Among critically ill patients with fluid overload receiving renal replacement therapy (RRT), we examined the association between UF intensity and risk-adjusted 1-year mortality. We selected patients with fluid overload ≥ 5% of body weight prior to initiation of RRT from a large academic medical center ICU dataset. UF intensity was calculated as the net volume of fluid ultrafiltered per day from initiation of either continuous or intermittent RRT until the end of ICU stay adjusted for patient hospital admission body weight. We stratified UF as low (≤ 20 ml/kg/day), moderate (> 20 to ≤ 25 ml/kg/day) or high (> 25 ml/kg/day) intensity. We adjusted for age, sex, body mass index, race, surgery, baseline estimated glomerular filtration rate, oliguria, first RRT modality, pre-RRT fluid balance, duration of RR...
Forced fluid removal in critically ill patients with acute kidney injury
Acta Anaesthesiologica Scandinavica, 2012
PurposeThe aim was to test the feasibility of protocol‐driven fluid removal with continuous renal replacement therapy (CRRT) in patients in whom standard fluid balance prescription did not result in substantial negative fluid balances.Materials and MethodsIn 10 mechanically ventilated patients with sepsis or signs of inflammation and acute kidney injury [age 65 (48–78 years; median, range), simplified acute physiology score II 66 (39–116)], fluid removal was guided by mean arterial pressure (MAP), cardiac index (CI), mixed venous oxygen saturation (SvO 2), lactate/base excess, peripheral circulation, and filling pressures, and adjusted hourly with the goal to maximize volume removal for up to 3 days.ResultsFluid removal rates during the 3 days before and during the study period [66 (36–72) h] were 11 (−30 to +36) ml/kg/day and −59 (−85 to −31) ml/kg/day, respectively (P = 0.002). In 12% of a total of 594 fluid removal rate evaluations, fluid removal had to be decreased or stopped. M...
JAMA network open, 2019
IMPORTANCE Net ultrafiltration (NUF) is frequently used to treat fluid overload among critically ill patients, but whether the rate of NUF affects outcomes is unclear. OBJECTIVE To examine the association of NUF with survival among critically ill patients with acute kidney injury being treated with continuous venovenous hemodiafiltration. DESIGN, SETTING, AND PARTICIPANTS The Randomized Evaluation of Normal vs Augmented Level (RENAL) of Renal Replacement Therapy trial was conducted between December 30, 2005, and November 28, 2008, at 35 intensive care units in Australia and New Zealand among critically ill adults with acute kidney injury who were being treated with continuous venovenous hemodiafiltration. This secondary analysis began in May 2018 and concluded in January 2019. EXPOSURES Net ultrafiltration rate, defined as the volume of fluid removed per hour adjusted for patient body weight. MAIN OUTCOMES AND MEASURES Risk-adjusted 90-day survival. RESULTS Of 1434 patients, the median (interquartile range) age was 67.3 (56.9-76.3) years; 924 participants (64.4%) were male; median (interquartile range) Acute Physiology and Chronic Health Evaluation III score was 100 (84-118); and 634 patients (44.2%) died. Using tertiles, 3 groups were defined: high, NUF rate greater than 1.75 mL/kg/h; middle, NUF rate from 1.01 to 1.75 mL/kg/h; and low, NUF rate less than 1.01 mL/kg/h. The high-tertile group compared with the low-tertile group was not associated with death from day 0 to 6. However, death occurred in 51 patients (14.7%) in the high-tertile group vs 30 patients (8.6%) in the low-tertile group from day 7 to 12 (adjusted hazard ratio [aHR], 1.51; 95% CI, 1.13-2.02); 45 patients (15.3%) in the high-tertile group vs 25 patients (7.9%) in the low-tertile group from day 13 to 26 (aHR, 1.52; 95% CI, 1.11-2.07); and 48 patients (19.2%) in the high-tertile group vs 29 patients (9.9%) in the low-tertile group from day 27 to 90 (aHR, 1.66; 95% CI, 1.16-2.39). Every 0.5-mL/kg/h increase in NUF rate was associated with increased mortality
Critical Care, 2011
Introduction Noninvasive ventilation is a safe and eff ective method to treat acute respiratory failure, minimizing the respiratory workload and oxygenation. Few studies compare the effi cacy of diff erent types of noninvasive ventilation interfaces and their adaptation. Objective To identify the most frequently noninvasive ventilation interfaces used and eventual problems related to their adaptation in critically ill patients. Methods We conducted an observational study, with patients older than 18 years old admitted to the intensive care and step-down units of the Albert Einstein Jewish Hospital that used noninvasive ventilation. We collected data such as reason to use noninvasive ventilation, interface used, scheme of noninvasive ventilation used (continuously, periods or nocturnal use), adaptation, and reasons for nonadaptation. Results We evaluated 245 patients with a median age of 82 years (range of 20 to 107 years). Acute respiratory failure was the most frequent cause of noninvasive ventilation used (71.3%), followed by pulmonary expansion (10.24%), after mechanical ventilation weaning (6.14%) and sleep obstructive apnea (8.6%). The most frequently used interface was total face masks (74.7%), followed by facial masks in 24.5% of the patients, and 0.8% used performax masks. The use of noninvasive ventilation for periods (82.4%) was the most common scheme of use, with 10.6% using it continuously and 6.9% during the nocturnal period only. Interface adaptation occurred in 76% of the patients; the 24% that did not adapt had their interface changed to improve adaptation afterwards. The total face mask had 75.5% of interface adaptation, the facial mask had 80% and no adaptation occurred in patients that used the performax mask. The face format was the most frequent cause of nonadaptation in 30.5% of the patients, followed by patient's related discomfort (28.8%), air leaking (27.7%), claustrophobia (18.6%), noncollaborative patient (10.1%), patient agitation (6.7%), facial trauma or lesion (1.7%), type of mask fi xation (1.7%), and 1.7% patients with other causes. Conclusion Acute respiratory failure was the most frequent reason for noninvasive ventilation use, with the total face mask being the most frequent interface used. The most common causes of interface nonadaptation were face format, patient-related discomfort and air leaking, showing improvement of adaptation after changing the interface used. P2 Exercise training reduces oxidative damage in skeletal muscle of septic rats
Peritoneal Dialysis International, 2011
Background: There are few reports on the role of peritoneal dialysis in critically ill patients requiring continuous renal replacement therapies. ♦ Methods: Patients with acute kidney injury and multiorgan involvement were randomly allotted to continuous venovenous hemodiafiltration(CVVHDF, group A) or to continuous peritoneal dialysis (CPD, group B). Cause and severity of renal failure were assessed at the time of initiating dialysis. Primary outcome was the composite correction of uremia, acidosis, fluid overload, and hyperkalemia. Secondary outcomes were improvement of sensorium and hemodynamic instability, survival, and cost. ♦ Results: Groups A and B comprised 25 patients each with mean ages of 45.32 ± 17.53 and 48.44 ± 17.64 respectively. They received 21.68 ± 13.46 hours and 66.02 ± 69.77 hours of dialysis respectively (p = 0.01). Composite correction was achieved in 12 patients of group A (48%) and in 14 patients of group B (56%). Urea and creatinine clearances were significantly higher in group A (21.72 ± 10.41 mL/min and 9.36 ± 4.93 mL/min respectively vs. 22.13 ± 9.61 mL/min and 10.5 ± 6.07 mL/min, p < 0.001). Acidosis was present in 21 patients of group A (84%) and in 16 of group B (64%); correction was better in group B (p < 0.001). Correction of fluid overload was faster and the amount of ultrafiltrate was significantly higher in group A (20.31 ± 21.86 L vs. 5.31 ± 5.75 L, p < 0.001). No significant differences were seen in correction of hyperkalemia, altered sensorium, or hemodynamic disturbance. Mortality was 84% in group A and 72% in group B. Factors that influenced outcome were the APACHE (Acute Physiology and Chronic Health Evaluation) II score (p = 0.02) and need for ventilatory support (p < 0.01). Cost of disposables was higher in group A than in group B [INR 7184 ± 1436 vs. INR 3009 ± 1643, p < 0.001 (US$1 = INR 47)]. ♦ Conclusions: Based on this pilot study, CPD may be a costconscious alternative to CVVHDF; differences in metabolic and clinical outcomes are minimal. Perit Dial Int 2011; 31(4):422-429 www.PDIConnect.com epub ahead of print: 28
Nephrology Dialysis Transplantation, 2004
Background. Sustained low-efficiency daily dialysis (SLEDD) is an increasingly popular renal replacement therapy for intensive care unit (ICU) patients. SLEDD has been previously reported to provide good solute control and haemodynamic stability. However, continuous renal replacement therapy (CRRT) is considered superior by many ICU practitioners, due first to the large amounts of convective clearance achieved and second to the ability to deliver treatment independently of nephrology services. We report on a program of sustained low-efficiency daily diafiltration (SLEDD-f ) delivered autonomously by ICU nursing personnel, and benchmark solute clearance data with recently published reports that have provided dose-outcome relationships for renal replacement therapy in this population.
Fluid Overload in Critically Ill Patients with Acute Kidney Injury
Blood Purification, 2010
Fluid overload may occur in critically ill patients as a result of aggressive resuscitation therapies. In such circumstances, persistent fluid overload must be avoided since it does not benefit the patient while it may be harmful. In the septic patient, early volume expansion seems to be beneficial. Beyond that threshold, when organ failure develops, fluid overload has been shown to be associated with worse outcomes in multiple disparate studies. One well-designed randomized controlled trial showed the benefit of a conservative fluid management strategy based on limited fluid intake and use of furosemide in such patients. Use of diuretics should be only short term as long as it is effective, generally at high doses, while avoiding simultaneous utilization of nephrotoxins such as aminoglycosides. Multiple randomized controlled trials have not shown benefit in the use of diuretics, either to prevent AKI or to treat established AKI. If fluid overload (defined as fluid accumulation >...
Annals of Intensive Care, 2012
Introduction: Capillary leak in critically ill patients leads to interstitial edema. Fluid overload is independently associated with poor prognosis. Bedside measurement of intra-abdominal pressure (IAP), extravascular lung water index (EVLWI), fluid balance, and capillary leak index (CLI) may provide a valuable prognostic tool in mechanically ventilated patients. Methods: We performed an observational study of 123 mechanically ventilated patients with extended hemodynamic monitoring, analyzing process-of-care variables for the first week of ICU admission. The primary outcome parameter was 28-day mortality. Δ max EVLWI indicated the maximum difference between EVLWI measurements during ICU stay. Patients with a Δ max EVLWI <−2 mL/kg were called 'responders'. CLI was defined as C-reactive protein (milligrams per deciliter) over albumin (grams per liter) ratio and conservative late fluid management (CLFM) as even-to-negative fluid balance on at least two consecutive days. Results: CLI had a biphasic course. Δ max EVLWI was lower if CLFM was achieved and in survivors (−2.4 ± 4.8 vs 1.0 ± 5.5 mL/kg, p = 0.001; −3.3 ± 3.8 vs 2.5 ± 5.3 mL/kg, p = 0.001, respectively). No CLFM achievement was associated with increased CLI and IAP mean on day 3 and higher risk to be nonresponder (odds ratio (OR) 2.76, p = 0.046; OR 1.28, p = 0.011; OR 5.52, p = 0.001, respectively). Responders had more ventilator-free days during the first week (2.5 ± 2.3 vs 1.5 ± 2.3, p = 0.023). Not achieving CLFM and being nonresponder were strong independent predictors of mortality (OR 9.34, p = 0.001 and OR 7.14, p = 0.001, respectively). Conclusion: There seems to be an important correlation between CLI, EVLWI kinetics, IAP, and fluid balance in mechanically ventilated patients, associated with organ dysfunction and poor prognosis. In this context, we introduce the global increased permeability syndrome.
Scientific Reports, 2021
The evaluation and management of fluid balance are key challenges when caring for critically ill patients requiring renal replacement therapy. The aim of this study was to assess the ability of clinical judgment and other variables to predict the occurrence of hypotension during intermittent hemodialysis (IHD) in critically ill patients. This was a prospective, observational, single-center study involving critically ill patients undergoing IHD. The clinical judgment of hypervolemia was determined by the managing nephrologists and critical care physicians in charge of the patients on the basis of the clinical data used to calculate the ultrafiltration volume and rate for each dialysis treatment. Seventy-nine (31.9%) patients presented with hypotension during IHD. Patients were perceived as being hypervolemic in 109 (43.9%) of the cases by nephrologists and in 107 (43.1%) by intensivists. The agreement between nephrologists and intensivists was weak (kappa = 0.561). Receiver operating characteristic curve analysis yielded an AUC of 0.81 (95% CI 0.75 to 0.84; P < 0.0001), and a cutoff value of 70 mm for the vascular pedicle width (VPW) had the highest accuracy for the prediction of the absence of hypotension. The clinical judgment of hypervolemia did not predict hypotension during IHD. The high predictive ability of the VPW may assist clinicians with critical thinking. Abbreviations RRT Renal replacement therapy IHD Intermittent hemodialysis VPW Vascular pedicle width AKI Acute kidney injury PAM Mean arterial pressure CXR Chest X ray CTR Cardiothoracic ratio ROC Receiver operating characteristic The evaluation and management of fluid balance are key challenges when caring for critically ill patients requiring renal replacement therapy (RRT) 1,2. Despite considerable advances in the assessment of dialysis adequacy with respect to solute removal and data suggesting that net ultrafiltration may be associated with the outcomes 3-5 , there is currently no specific measure of adequacy for fluid removal 6,7. Intradialytic hypotension is a common complication associated with RRT; it may be associated with the ultrafiltration rate and can cause further ischemic injury to the recovering kidneys, thereby potentially reducing the probability of renal recovery 4,8. Therefore, the selection of the optimal ultrafiltration rate that will not result in any adverse clinical consequences depends on an accurate estimation of the patient's fluid status and hemodynamics, an adequate understanding of the principles of fluid overload treatment with ultrafiltration, and clear treatment goals 2,9,10 , although there are several methods