Renal replacement therapy in patients with chronic liver disease

Area of Science:

• Nephrology
• Hepatology
• Internal Medicine

Background:

• Rising prevalence of chronic liver disease and chronic kidney disease (CKD) creates complex clinical scenarios.
• Creatinine-based estimates of kidney function are unreliable in cirrhosis, complicating diagnosis and treatment.
• Distinguishing uremia from hepatic disease and defining indications for renal replacement therapy (RRT) are challenging.

Purpose of the Study:

• To review the diagnostic, treatment, and ethical challenges in patients with coexisting liver and kidney disease.
• To evaluate the role and outcomes of different RRT modalities in this population.
• To guide clinical decision-making regarding RRT in cirrhotic patients with renal failure.

Main Methods:

• Literature review and synthesis of existing evidence on RRT in cirrhotic patients.
• Analysis of complications and survival data associated with hemodialysis, peritoneal dialysis, and continuous RRT.
• Discussion of diagnostic difficulties and ethical considerations.

Main Results:

• Hemodialysis shows high complication rates and unproven survival benefits in cirrhotic patients with acute renal failure (ARF), with limited data for CKD.
• Peritoneal dialysis is ineffective for ARF in liver disease but may be viable for some cirrhotic patients with CKD.
• Continuous RRT is generally tolerated in decompensated cirrhosis with renal failure and can facilitate liver transplantation.

Conclusions:

• RRT utility must be carefully considered in cirrhotic patients with renal failure due to poor underlying survival.
• Continuous RRT may serve as a bridge to liver transplantation.
• Further research is needed to define optimal RRT strategies for specific patient subgroups.