Dobutamine stress echocardiography

Detection of coronary artery disease in patients with dilated cardiomyopathy

Scott M. Sharp, Stephen Sawada, Douglas S. Segar, Thomas Ryan, Roxanne Kovacs, Naomi S. Fineberg, Harvey Feigenbaum

Research output: Contribution to journalArticle

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Abstract

Objectives. This study attempted to determine the safety and accuracy of dobutamine stress echocardiograpby for detection of coronary artery disease in patients with dilated cardiomyopathy. Background. Detection of regional wall motion abnormalities at rest does not reliably distinguish ischemic front nonischemic cardiomyopathy. Previous studies have shown that dobutamine stress echocardiography safely and accurately identifies coronary artery disease in patients without dilated cardiomyopathy. Methods. Seventy patients with dilated cardiomyopathy under-went dobutamine stress echocardiography. Echocardiograms were obtained at baseline and at low (5 to 10 μg/kg body weight per min) and peak doses of dobutamine. Rest and stress left ventricular wall motion scores were derived from analysis of regional wall motion. Fifty-four subjects underwent coronary angiography. Results. Dobutamine infusion was terminated after achievement of the target heart rate or maximal protocol dose in 49 patients (70%), ischemia in 12 (17%), arrhythmia in 4 (6%) and side efects in 5 (7%). No patient had prolonged ischemia or sustained arrhythmia. Of those with angiographic studies, 40 had significant coronary artery disease (≥50% diameter stenosis). Use of the change in global wall motion score index from low to peak dose resulted in a sensitivity of 83% for dobutamine stress echocardiography and a specificity of 71% for detection of coronary artery disease. Sensitivity for detection of triple-,double-and single-vessel disease was 100%, 83% and 69%, respectively. Conclusions. Dobutamine stress echocardiography safely provides diagnostic information in patients with dilated cardiomyopathy. This technique has high sensitivity for multivessel coronary artery disease but only moderate specificity.

Original languageEnglish
Pages (from-to)934-939
Number of pages6
JournalJournal of the American College of Cardiology
Volume24
Issue number4
DOIs
StatePublished - 1994

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Stress Echocardiography
Dilated Cardiomyopathy
Coronary Artery Disease
Dobutamine
Cardiac Arrhythmias
Ischemia
Coronary Angiography
Cardiomyopathies
Pathologic Constriction
Heart Rate
Body Weight
Safety

ASJC Scopus subject areas

  • Nursing(all)

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Dobutamine stress echocardiography : Detection of coronary artery disease in patients with dilated cardiomyopathy. / Sharp, Scott M.; Sawada, Stephen; Segar, Douglas S.; Ryan, Thomas; Kovacs, Roxanne; Fineberg, Naomi S.; Feigenbaum, Harvey.

In: Journal of the American College of Cardiology, Vol. 24, No. 4, 1994, p. 934-939.

Research output: Contribution to journalArticle

Sharp, Scott M. ; Sawada, Stephen ; Segar, Douglas S. ; Ryan, Thomas ; Kovacs, Roxanne ; Fineberg, Naomi S. ; Feigenbaum, Harvey. / Dobutamine stress echocardiography : Detection of coronary artery disease in patients with dilated cardiomyopathy. In: Journal of the American College of Cardiology. 1994 ; Vol. 24, No. 4. pp. 934-939.
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abstract = "Objectives. This study attempted to determine the safety and accuracy of dobutamine stress echocardiograpby for detection of coronary artery disease in patients with dilated cardiomyopathy. Background. Detection of regional wall motion abnormalities at rest does not reliably distinguish ischemic front nonischemic cardiomyopathy. Previous studies have shown that dobutamine stress echocardiography safely and accurately identifies coronary artery disease in patients without dilated cardiomyopathy. Methods. Seventy patients with dilated cardiomyopathy under-went dobutamine stress echocardiography. Echocardiograms were obtained at baseline and at low (5 to 10 μg/kg body weight per min) and peak doses of dobutamine. Rest and stress left ventricular wall motion scores were derived from analysis of regional wall motion. Fifty-four subjects underwent coronary angiography. Results. Dobutamine infusion was terminated after achievement of the target heart rate or maximal protocol dose in 49 patients (70{\%}), ischemia in 12 (17{\%}), arrhythmia in 4 (6{\%}) and side efects in 5 (7{\%}). No patient had prolonged ischemia or sustained arrhythmia. Of those with angiographic studies, 40 had significant coronary artery disease (≥50{\%} diameter stenosis). Use of the change in global wall motion score index from low to peak dose resulted in a sensitivity of 83{\%} for dobutamine stress echocardiography and a specificity of 71{\%} for detection of coronary artery disease. Sensitivity for detection of triple-,double-and single-vessel disease was 100{\%}, 83{\%} and 69{\%}, respectively. Conclusions. Dobutamine stress echocardiography safely provides diagnostic information in patients with dilated cardiomyopathy. This technique has high sensitivity for multivessel coronary artery disease but only moderate specificity.",
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N2 - Objectives. This study attempted to determine the safety and accuracy of dobutamine stress echocardiograpby for detection of coronary artery disease in patients with dilated cardiomyopathy. Background. Detection of regional wall motion abnormalities at rest does not reliably distinguish ischemic front nonischemic cardiomyopathy. Previous studies have shown that dobutamine stress echocardiography safely and accurately identifies coronary artery disease in patients without dilated cardiomyopathy. Methods. Seventy patients with dilated cardiomyopathy under-went dobutamine stress echocardiography. Echocardiograms were obtained at baseline and at low (5 to 10 μg/kg body weight per min) and peak doses of dobutamine. Rest and stress left ventricular wall motion scores were derived from analysis of regional wall motion. Fifty-four subjects underwent coronary angiography. Results. Dobutamine infusion was terminated after achievement of the target heart rate or maximal protocol dose in 49 patients (70%), ischemia in 12 (17%), arrhythmia in 4 (6%) and side efects in 5 (7%). No patient had prolonged ischemia or sustained arrhythmia. Of those with angiographic studies, 40 had significant coronary artery disease (≥50% diameter stenosis). Use of the change in global wall motion score index from low to peak dose resulted in a sensitivity of 83% for dobutamine stress echocardiography and a specificity of 71% for detection of coronary artery disease. Sensitivity for detection of triple-,double-and single-vessel disease was 100%, 83% and 69%, respectively. Conclusions. Dobutamine stress echocardiography safely provides diagnostic information in patients with dilated cardiomyopathy. This technique has high sensitivity for multivessel coronary artery disease but only moderate specificity.

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