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The kidney in liver transplantation
P T Pham1, P C Pham, A H Wilkinson
1Division of Nephrology, Department of Medicine, University of California School of Medicine, Los Angeles, USA.
Clinics in Liver Disease
|March 10, 2001
Summary
Recognizing renal failure in end-stage liver disease (ESLD) requires a systematic approach to differentiate functional from irreversible causes. Early liver transplantation is key for functional failure, while combined liver-kidney transplantation (CLKT) is an option for irreversible disease.
Area of Science:
- Nephrology
- Hepatology
- Transplantation Medicine
Background:
- Renal failure in end-stage liver disease (ESLD) presents diagnostic challenges due to multifactorial causes.
- Distinguishing functional renal failure (e.g., hepatorenal syndrome, HRS) from irreversible renal disease is critical for appropriate management.
Purpose of the Study:
- To outline a systematic approach for early recognition and determination of renal failure causes in ESLD patients.
- To discuss management strategies for renal complications post-orthotopic liver transplantation (OLT).
Main Methods:
- Literature review focusing on renal failure in ESLD and post-OLT management.
- Analysis of diagnostic dilemmas, including the role of kidney biopsy.
- Evaluation of immunosuppressive regimens and their impact on renal function.
Main Results:
- Functional renal failure (HRS) generally has a favorable outcome post-OLT, with dialysis not adversely affecting survival.
- Renal failure associated with sepsis and requiring dialysis (except in HRS) indicates a worse prognosis.
- Prolonged dialysis (>4 weeks) in HRS patients may signal irreversible failure, potentially requiring combined liver-kidney transplantation (CLKT).
Conclusions:
- A systematic approach aids in identifying reversible causes of acute renal failure (ARF) in ESLD.
- Isolated liver transplantation is preferred for functional renal failure; CLKT is considered for irreversible disease.
- Judicious use of CLKT and timely referral for OLT are essential to optimize outcomes and avoid combined transplantation.