Study to Evaluate if the Drug Vasopressin Protects the Kidneys for

Status Completed

Clinical Trial Summary

The purpose of this study is evaluate the medication vasopressin for its ability to preserve kidney function in patients undergoing liver transplantation.

Clinical Trial Description

Renal failure is a common complication of liver disease. Hepatorenal syndrome is caused by a dysfunctional global circulation in the setting of liver disease: Increased flow to the mesenteric circulation is a contributor to decreased blood flow to the kidneys (1). Renal failure often worsens in the perioperative period of liver transplantation since the kidneys are further stressed by reduced flow due to inferior venacava occlusion, decreased blood flow to the kidneys from anesthetics, as well as hypotension from volume shifts, such as when large volumes of ascites are removed. Renal failure is a cause of major morbidity and mortality in patients undergoing liver transplantation.

Vasopressin is a logical choice of therapy in this context as the effects of the drug work to particularly increase renal blood flow and glomerular filtration rate due to the location of specific vasopressin receptors within the renal vasculature. It has been suggested that the use of splanchnic (and systemic) vasoconstrictors such as terlipressin (a vasopressin analog) or alpha-1-adrenoceptor agonists (midodrine or noradrenaline) may improve renal function in patients with type 1 Hepatorenal Syndrome.

Six studies (with only one randomized study in a small series of patients) have shown that terlipressin improves renal function in these patients (2-7). This drug is available in Europe, but not in the United States. However, while anesthesiologists commonly use vasopressin during liver transplantation in the setting of hepatorenal syndrome or vasodilatory shock, the validity of this practice for its effects on renal function and outcomes has not been rigorously studied (8-10). Therefore, the purpose of this study is to evaluate the effects of low-dose vasopressin on intraoperative and perioperative renal function in liver transplant patients.

This study will be a randomized, double-blind controlled trial performed in adult liver transplant patients coming to surgery for chronic liver disease; the major end-points of analyses are renal function tests in the perioperative period. ;

Study Design

Related Conditions & MeSH terms

Liver Failure

Clinical Trial Details

NCT number	NCT00886262
Study type	Interventional
Source	Medical University of South Carolina
Contact
Status	Completed
Phase	N/A
Start date	July 2007
Completion date	August 2011

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Study to Evaluate if the Drug Vasopressin Protects the Kidneys for Patients Undergoing Liver Transplant

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms