Low dose dobutamine stress echocardiography predicts the improvement of left ventricular systolic function in dilated

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Cardiac Stress Test Induced by Dobutamine and Monitored by Cardiac Catheterization in Mice

Published on: February 10, 2013

H Kitaoka1, J Takata, T Yabe

  • 1Department of Medicine and Geriatrics, Kochi Medical School, Kochi, Japan.

Heart (British Cardiac Society)
|April 23, 1999
PubMed

Insights

Dobutamine stress echocardiography can predict left ventricular systolic function improvement in dilated cardiomyopathy (DCM) patients. Changes in function during stress correlate with long-term outcomes, aiding prognosis.

Area of Science:

  • Cardiology
  • Echocardiography
  • Heart Failure

Background:

  • Dilated cardiomyopathy (DCM) is characterized by impaired left ventricular systolic function.
  • Predicting functional recovery in DCM is crucial for patient management and treatment strategies.

Purpose of the Study:

  • To evaluate dobutamine stress echocardiography (DSE) as a predictor of left ventricular systolic function improvement in DCM patients.
  • To assess the correlation between myocardial contractile reserve assessed by DSE and long-term functional changes.

Main Methods:

  • 18 DCM patients underwent DSE to assess myocardial contractile reserve.
  • Left ventricular ejection fraction (LVEF) and regional wall motion scores were analyzed before and during dobutamine infusion.
  • Changes in LVEF and wall motion were compared with outcomes over a 15-month follow-up period.

Main Results:

  • Patients who improved LVEF (>20%) at follow-up showed a significantly greater improvement in wall motion score during dobutamine infusion compared to non-improvers.
  • The percentage change in LVEF during dobutamine stress strongly correlated with the change in LVEF during the follow-up period (r=0.74, p<0.001).

Conclusions:

  • Dobutamine stress echocardiography is a valuable tool for predicting the improvement of left ventricular systolic function in DCM.
  • Assessing changes in left ventricular systolic performance during low-dose dobutamine stress can guide prognosis in DCM patients.
Abstract

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