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Hemodynamic changes in patients developing effective hypovolemia after total paracentesis

M C Vila1, R Solà, L Molina

  • 1Service of Gastroenterology, Hospital del Mar, Universitat Autònoma de Barcelona, Spain.

Journal of Hepatology
|May 5, 1998
PubMed
Summary

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Paracentesis for tense ascites can cause effective hypovolemia due to worsened vasodilation. This study investigated the hemodynamic mechanisms behind this complication in cirrhosis patients.

Area of Science:

  • Hepatology
  • Cardiology
  • Nephrology

Background:

  • Paracentesis is a common treatment for tense ascites in cirrhosis.
  • The mechanism of effective hypovolemia, a complication of paracentesis, is not well understood.

Purpose of the Study:

  • To investigate the mechanism of effective hypovolemia after paracentesis in patients with cirrhosis and tense ascites.
  • To assess changes in systemic hemodynamics following the procedure.

Main Methods:

  • Systemic hemodynamics were sequentially measured in 46 patients before and after total paracentesis.
  • Measurements included plasma renin activity, aldosterone, mean arterial pressure, cardiac output, and systemic vascular resistance.
  • Plasma volume expansion was administered concurrently with paracentesis.

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Main Results:

  • Effective hypovolemia occurred in 20 patients, characterized by a significant increase in plasma renin activity.
  • These patients also showed a significant decrease in mean arterial pressure and systemic vascular resistance.
  • No significant hemodynamic changes were observed in the 26 patients who did not develop effective hypovolemia.

Conclusions:

  • Effective hypovolemia after paracentesis in cirrhosis is primarily caused by an exacerbation of existing arteriolar vasodilation.
  • This finding highlights the importance of monitoring hemodynamic parameters post-paracentesis.