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Related Experiment Videos

Autonomic dysfunction and hyperdynamic circulation in cirrhosis with ascites.

F Trevisani1, G Sica, P Mainquà

  • 1Department of Internal Medicine, Cardioangiology and Hepatology, University of Bologna, Italy. trevi@unibo.it

Hepatology (Baltimore, Md.)
|November 26, 1999
PubMed
Summary

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Autonomic dysfunction (AD), particularly vagal dysfunction, is prevalent in advanced cirrhosis patients and contributes to the hyperdynamic circulatory syndrome. This study links AD to altered heart rate, cardiac index, and vascular resistance.

Area of Science:

  • Cardiology
  • Gastroenterology
  • Autonomic Neuroscience

Background:

  • Advanced cirrhosis often presents with hemodynamic abnormalities.
  • Autonomic dysfunction (AD) is common in cirrhosis and may drive hyperdynamic circulation.

Purpose of the Study:

  • To evaluate hemodynamic status and autonomic function in patients with advanced cirrhosis.
  • To investigate the role of AD in the pathogenesis of the hyperdynamic circulatory syndrome.

Main Methods:

  • Assessed autonomic function using 7 cardiovascular tests (vagal and sympathetic).
  • Measured cardiac index (CI) via echocardiogram.
  • Scored autonomic tests from 1 (normal) to 3 (altered).

Main Results:

Related Experiment Videos

  • 80% of patients (24/30) exhibited AD, with 47% (14/30) showing definite AD.
  • Vagal dysfunction (VD) was found in 63% (19/30), and sympathetic dysfunction (SD) in 10% (3/30).
  • Patients with AD had higher heart rate, lower vascular resistance, and increased CI compared to those without AD.

    • Conclusions:

    • Autonomic dysfunction, especially vagal dysfunction, is implicated in the hyperdynamic circulatory syndrome of advanced cirrhosis.
    • AD is directly correlated with increased heart rate and CI, and inversely with peripheral vascular resistance.