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Cirrhotic cardiomyopathy and liver transplantation
1Liver Unit, Gastroenterology Research Group, University of Calgary, Calgary, Alberta, Canada.
Insights
Cirrhotic cardiomyopathy impairs heart function in liver disease patients, often worsening during stress. This condition may improve after liver transplantation but requires better diagnosis and treatment strategies.
Area of Science:
- Cardiology
- Hepatology
- Transplantation Medicine
Background:
- Cirrhotic cardiomyopathy is a common complication of advanced liver disease.
- It involves impaired myocardial contractility, particularly under stress.
- Cardiac dysfunction is a significant cause of morbidity and mortality in liver transplant recipients.
Purpose of the Study:
- To review the pathophysiology, clinical implications, and management of cirrhotic cardiomyopathy.
- To highlight the challenges in diagnosing and treating this condition before and after orthotopic liver transplantation (OLT).
- To underscore the need for further research into its natural history and reversibility.
Main Methods:
- Review of existing literature on cirrhotic cardiomyopathy and its impact on OLT.
- Analysis of proposed pathogenetic mechanisms including beta-adrenergic signaling, membrane properties, and humoral factors.
- Discussion of diagnostic limitations and current empirical management strategies.
Main Results:
- Impaired cardiac beta-adrenergic receptor function and signaling are implicated in pathogenesis.
- Alterations in cardiomyocyte membrane properties and humoral factors (nitric oxide, carbon monoxide, catecholamines) may contribute.
- Lack of sensitive, noninvasive diagnostic tests hinders pre-OLT recognition.
- Cardiac failure is a major concern post-OLT.
Conclusions:
- Cirrhotic cardiomyopathy is a complex condition with significant implications for liver transplant outcomes.
- Current diagnostic and therapeutic approaches are suboptimal.
- While potentially reversible post-OLT, further investigation into its natural history is warranted.
Abstract:
Myocardial contractility in cirrhosis is impaired, particularly under stressful situations, in a phenomenon termed cirrhotic cardiomyopathy. Impairment of the cardiac beta-adrenergic receptor and its signaling function appears to be involved in the pathogenesis of this disorder. Additional mechanisms that may have a role include alterations in the physicochemical properties of the cardiomyocyte plasma membrane and abnormalities in circulating humoral factors, such as nitric oxide, carbon monoxide, and catecholamines. The widespread use of orthotopic liver transplantation (OLT) and its associated stresses on the cardiovascular system have highlighted this condition. Cardiac failure has emerged as an important cause of morbidity and mortality in the liver transplant recipient. Unfortunately, pre-OLT recognition of cirrhotic cardiomyopathy is suboptimal because of a lack of sensitive, noninvasive diagnostic tests. Similarly, the management of cirrhotic cardiomyopathy is largely empirical because of a paucity of existing literature. Although evidence suggests that cirrhotic cardiomyopathy may be reversible after OLT, the natural history of this condition warrants further investigation.