Analysis of systolic and diastolic time intervals during dobutamine-atropine stress echocardiography: Diagnostic potential of the Doppler myocardial performance index

L. H. Ling, C. Tei, R. B. McCully, K. R. Bailey, J. B. Seward, P. A. Pellikka

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Systolic and especially diastolic Doppler time intervals may be early markers of myocardial ischemia inducible by dobutamine-atropine stress echocardiography (DASE). We postulated that the Doppler myocardial performance index (MPI) may help differentiate ischemic from nonischemic responses. Hemodynamic and Doppler echocardiography variables were measured prospectively at every stress level of DASE in 32 patients (mean age 67 ± 13 years). Adequate recordings were obtained in 27 patients; 13 had an ischemic response (group I) and 14 a nonischemic response (group II). Heart rate differed between groups at baseline. At equivalent peak stress, left ventricular wall motion score index was significantly greater and ejection fraction lower in group I patients. Of the Doppler variables, only the MPI consistently differed between groups, irrespective of the number of stress levels compared. The Doppler MPI may be a useful adjunct to wall motion analysis in the detection of myocardial ischemia during DASE.

Original languageEnglish (US)
Pages (from-to)978-986
Number of pages9
JournalJournal of the American Society of Echocardiography
Volume14
Issue number10
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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