Kidney and body fluids

2014 ◽  
Author(s):  
Jeremy Prout ◽  
Tanya Jones ◽  
Daniel Martin
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Fluid Balance ◽  
Body Fluid ◽  
Kidney Injury ◽  
Acid Base ◽  
Preventative Measures ◽  
Body Fluid Compartments ◽  
Fluid Compartments ◽  
Therapy Strategies

The physiology of body fluid compartments is revised in association with clinical assessment of fluid balance and the management of fluid-related abnormalities. Electrolyte and acid-base disorders; causes, consequences and management are summarized. Acute kidney injury in the context of perioperative medicine is discussed; including definitions, risks, causes, recognition, prevention and preventative measures. Renal replacement therapy strategies are explained.

scholarly journals Cumulative positive fluid balance is a risk factor for acute kidney injury and requirement for renal replacement therapy after liver transplantation

2018 ◽  
Vol 8 (2) ◽  
pp. 44-51 ◽  
Author(s):  
Liana Codes ◽  
Ygor Gomes de Souza ◽  
Ricardo Azevedo Cruz D´Oliveira ◽  
Jorge Luiz Andrade Bastos ◽  
Paulo Lisboa Bittencourt
Keyword(s):  
Liver Transplantation ◽  
Acute Kidney Injury ◽  
Risk Factor ◽  
Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Fluid Balance ◽  
Kidney Injury ◽  
Positive Fluid Balance

Characterization of a Low Extracorporeal Volume, High Accuracy Pediatric Continuous Renal Replacement Therapy Device

2012 ◽  
Author(s):  
Arvind Santhanakrishnan ◽  
Trent Nestle ◽  
Brian Moore ◽  
Ajit P. Yoganathan ◽  
Matthew L. Paden
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Continuous Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Fluid Balance ◽  
Pediatric Patients ◽  
Kidney Injury ◽  
High Accuracy ◽  
Critically Ill Children

The incidence of acute kidney injury (AKI) is commonly seen in critically ill children, the origins of which may be traced to a wide range of conditions such as inborn errors of metabolism, sepsis, congenital heart defects, bone marrow and organ transplantation, and to a lesser extent from multiple organ dysfunction syndrome (MODS) [1]. It is vital to provide a form of fluid and electrolyte clearance in these patients until native renal function improves. Nearly 3,600 critically ill children per year with acute kidney injury receive life-saving continuous renal replacement therapy (CRRT) in the United States. However, there is no CRRT device approved by the Food and Drug Administration for use in pediatric patients. Thus, clinicians unsafely adapt adult CRRT devices for use in the pediatric patients due to lack of safer alternatives. Complications observed with using adult adapted CRRT devices in children include hypotension, hemorrhage, thrombosis, temperature instability, inaccurate fluid balance between ultrafiltrate (UF) removed from and replacement fluid (RF) delivered to the patient, electrolyte disorders, and alteration of drug clearance. This research addresses this unmet clinical need through the design, mechanical and biological characterization of a pediatric specific Kidney Injury and Dysfunction Support (KIDS) CRRT device that provides high accuracy in fluid balance, reduces extracorporeal blood volume, and eliminates other problems associated with using adapted adult CRRT devices in children.

scholarly journals The interactive effects of input and output on managing fluid balance in patients with acute kidney injury requiring continuous renal replacement therapy

Critical Care ◽  
2019 ◽  
Vol 23 (1) ◽  
Author(s):  
Jong Hyun Jhee ◽  
Hye Ah Lee ◽  
Seonmi Kim ◽  
Youn Kyung Kee ◽  
Ji Eun Lee ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Continuous Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Fluid Balance ◽  
Interactive Effect ◽  
Kidney Injury ◽  
Input And Output ◽  
The Impact ◽  
Cumulative Fluid Balance

Abstract Background The interactive effect of cumulative input and output on achieving optimal fluid balance has not been well elucidated in patients with acute kidney injury (AKI) requiring continuous renal replacement therapy (CRRT). This study evaluated the interrelation of fluid components with mortality in patients with AKI requiring CRRT. Methods This is a retrospective observational study conducted with a total of 258 patients who were treated with CRRT due to AKI between 2016 and 2018 in the intensive care unit of Ewha Womans University Mokdong Hospital. The amounts of fluid input and output were assessed at 24-h and 72-h from the initiation of CRRT. The study endpoints were 7- and 28-day all-cause mortality. Results The mean patient age was 64.7 ± 15.8 years, and 165 (64.0%) patients were male. During the follow-up, 7- and 28-day mortalities were observed in 120 (46.5%) and 157 (60.9%) cases. The patients were stratified into two groups (28-day survivors vs. non-survivors), and the cumulative fluid balances (CFBs) at 24 h and 72 h were significantly higher in the 28-day non-survivors compared with the survivors. The increase in 24-h and 72-h CFB was significantly associated with an increase in 7- and 28-day mortality risks. To examine the interactive effect of cumulative input or output on the impact of CFB on mortality, we also stratified patients into three groups based on the tertile of 24-h and 72-h cumulative input or output. The increases in 24-h and 72-h CFBs were still significantly related to the increases in 7-day and 28-day mortality, irrespective of the cumulative input. However, we did not find significant associations between increase in 24-h and 72-h CFB and increase in mortality risk in the groups according to cumulative output tertile. Conclusions The impact of cumulative fluid balance on mortality might be more dependent on cumulative output. The physicians need to decrease the cumulative fluid balance of CRRT patients as much as possible and consider increasing patient removal.

scholarly journals The efficacy of renal replacement therapy strategies for septic-acute kidney injury

Medicine ◽  
2019 ◽  
Vol 98 (16) ◽  
pp. e15257 ◽  
Author(s):  
Junjing Zha ◽  
Chuan Li ◽  
Gaoxiang Cheng ◽  
Lijuan Huang ◽  
Zhaoqing Bai ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Kidney Injury ◽  
Septic Acute Kidney Injury ◽  
Therapy Strategies

Early negative fluid balance is associated with lower mortality after cardiovascular surgery

Perfusion ◽  
2018 ◽  
Vol 33 (8) ◽  
pp. 630-637 ◽  
Author(s):  
Chenglong Li ◽  
Hong Wang ◽  
Nan Liu ◽  
Ming Jia ◽  
Haitao Zhang ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Critically Ill ◽  
Fluid Balance ◽  
Cardiovascular Surgery ◽  
Postoperative Mortality ◽  
Kidney Injury ◽  
Positive Fluid Balance ◽  
Negative Fluid Balance ◽  
The Relationship

Background: Early fluid expansion could prevent postoperative organ hypoperfusion. However, excessive fluid resuscitation adversely influences multiple organ systems. This retrospective, observational study aimed to investigate the relationship between early negative fluid balance and postoperative mortality in critically ill adult patients following cardiovascular surgery. Methods: In total, 567 critically ill patients who had undergone cardiovascular surgery and whose intensive care unit length of stay (LOS) was more than 24 hours were enrolled. The baseline characteristics, daily fluid balance and cumulative fluid balance were obtained. Patients were followed until discharge or day 28. Multivariate logistic regressions adjusted by propensity score were used to analyze the relationship between early negative fluid balance and postoperative mortality. Results: Overall, postoperative mortality was 6.2% (35/567). Acute Physiology and Chronic Health Evaluation II on admission (odd ratios [OR] 1.110), acute kidney injury stage (OR 1.639) and renal replacement therapy received (OR 3.922) were the independent risk factors of postoperative mortality, whereas negative daily fluid balance at day 2 (OR 0.411) was the protective factor. Patients with a negative daily fluid balance at day 2 had lower postoperative mortality (3.4% vs. 12.2% in the positive fluid balance group), lower acute kidney injury (AKI) stage, were less likely to receive renal replacement therapy (RRT) and experienced shorter hospital LOS compared with those with a daily positive fluid balance. Conclusion: This retrospective, observational study indicates that early negative fluid balance is associated with lower postoperative mortality in critically ill patients following cardiovascular surgery. Further prospective, randomized trials are needed to prove the benefits from the restrictive fluid management strategy.

scholarly journals Renal Replacement Therapy in Critically Ill: Current Trend and New Direction

2015 ◽  
Vol 3 (1) ◽  
pp. 17-21
Author(s):  
Sarwar Iqbal ◽  
Mohammad Omar Faruq
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Serum Creatinine ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Early Identification ◽  
Kidney Injury ◽  
Hemodynamic Instability ◽  
Acid Base ◽  
Icu Patients

Critically ill patients often present with renal dysfunction. Acute kidney injury (AKI) is common in intensive care unit (ICU) patients and is often a component of multiple organ dysfunction syndrome (MODS). Renal replacement therapy (RRT) plays a significant role in management of acute and chronic renal failure in ICU. During the last decade RRT has made remarkable progress in management of renal dysfunction of critically ill. The Acute Dialysis Quality Initiative conceived in 2002 proposed RIFLE classification for AKI (risk, injury, failure, loss, end-stage kidney disease) using serum creatinine and urine output in critically ill patients. More recently, the Acute Kidney Injury Network (AKIN) has been introduced for staging AKI. Studies have shown that mortality increases proportionately with increasing severity of AKI. In patients with severe AKI requiring RRT mortality is approximately 50% to 70% according to one study and even a small changes in serum creatinine are associated with increased mortality. The most common causes of AKI in ICU are sepsis, hypovolemia, low cardiac output and drugs. The various techniques of RRT used in ICU include intermittent hemodialysis (IHD), continuous RRT (CRRT), sustained low efficiency dialysis (SLED) and peritoneal dialysis (PD). It is preferable to use RRT at either RIFLE injury type or at AKIN stage II in critically ill patients. IHD is commonly used in hemodynamically stable ICU patients. Because of high dialysate (500ml/min) IHD may cause hypotension in some patients. Solute removal may be episodic and often result in inferior uraemic control and acid base control. CRRT is usually initiated with a blood flow of 100 to 200 ml/min. and thus hemodynamic instability associated with IHD is avoided. Major advantages of CRRT include continuous control of fluid status, hemodynamic stability and control of acid base status. It is expensive and there is high risk of bleeding because of use of high dose of IV heparin. SLED has been found to be safe and effective in critically ill patients with hemodynamic instability. It uses the same dialysis machine of IHD and combines the effectiveness of CRRT in unstable patients and easy operability of IHD. It is also cost effective. PD is initiated in ICU for AKI patients when bedside IHD is not available. It is good for hemodynamically unstable patients when IHD or CRRT is difficult. In patients on mechanical ventilator, PD interferes with function of diaphragm causing decrease in lung compliance. Early identification of AKI with bio markers is an important step in improving outcomes of AKI. These bio markers help early detection of AKI before the onset of rise in serum creatinine. Serum cystatin C is one of the sensitive bio markers of small changes in Glomerular filtration rate (GFR) and has been found to be useful. AKI in the ICU most commonly results from multiple insults. Therefore appropriate and early identification of patients at risk of AKI provides an opportunity to prevent subsequent renal insults. This strategy will influence overall ICU morbidity and mortality.Bangladesh Crit Care J March 2015; 3 (1): 17-21

MO837IMPACT OF DOWNTIME ON CLINICAL OUTCOMES IN CRITICALLY ILL PATIENTS WITH ACUTE KIDNEY INJURY RECEIVING CONTINUOUS RENAL REPLACEMENT THERAPY: A RETROSPECTIVE STUDY USING PROPENSITY SCORE-MATCHED ANALYSIS

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Jungho Shin ◽  
Hyun Chul Song ◽  
Jin Ho Hwang ◽  
Su Hyun Kim
Keyword(s):  
Acute Kidney Injury ◽  
Renal Replacement Therapy ◽  
Propensity Score ◽  
Continuous Renal Replacement Therapy ◽  
Replacement Therapy ◽  
Critically Ill ◽  
Fluid Balance ◽  
Critically Ill Patients ◽  
Quality Indicator ◽  
Kidney Injury

Abstract Background and Aims Continuous renal replacement therapy (CRRT) is essential in treating critically ill patients with acute kidney injury, and circuit downtime is considered a quality indicator. However, it remains uncertain whether CRRT downtime affects outcomes such as mortality and renal recovery. This study investigated the impact of downtime on various clinical outcomes in critically ill patients undergoing CRRT. Method A total of 216 patients who underwent CRRT were retrospectively recruited. Downtime was calculated over 4 days from CRRT initiation, and patients were classified as downtime <20% or ≥20% of potential operative time. Patients with ≥20% downtime were matched to those with <20% downtime using 1:2 propensity score matching, adjusting for age, sex, comorbidity index, and severity score. Results There were 88 patients with <20% downtime and 44 patients with ≥20% downtime. The cumulative volume and median flow rate of effluent in patients with ≥20% downtime were lower than those in patients with <20% downtime (P<0.001 and 0.062, respectively). Daily fluid balance differed on days 2 and 3 (P=0.046 and 0.031, respectively), and the difference in levels of urea and creatinine widened over time (P=0.004 and <0.001, day 4). The levels of total carbon dioxide were lower in those with ≥20% downtime (P=0.038 and 0.020 at days 2 and 3). Based on our results, ≥20% downtime was not associated with increased 28-day mortality (P=0.944). On the other hand, a subgroup analysis showed the interaction between downtime and daily fluid balance on mortality (P=0.004). In this study, downtime was not related to renal recovery. Conclusion Increased downtime could impair fluid and uremic control and acidosis management in patients undergoing CRRT. Moreover, the adverse effect of downtime on fluid control may increase mortality rate. Further studies are needed to verify the value of downtime as a quality indicator and its impact on outcomes in critically ill patients requiring CRRT.

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