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• W2163691631 abstract "Because unstable angina has always been considered a contraindication for dobutamine-atropine stress echocardiography (DSE), the role of dobutamine-atropine stress echocardiography in unstable angina is unknown. Our aim was to assess the safety and prognostic value of dobutamine-atropine stress echocardiography in unstable angina.One hundred and thirty-two patients were studied (mean age 64+/-12 years, 29 women). Dobutamine-atropine stress echocardiography was performed on the third day after hospital admission. End-points were unstable angina, myocardial infarction or cardiac death at 1 year follow-up.No major complications occurred during dobutamine-atropine stress echocardiography. Ninety-six (78%) patients were on beta-blocker therapy during the test; mean maximum heart rate achieved was 106+/-23 beats x min(-1). Nine of the 21 patients (43%) with a positive dobutamine-atropine stress echocardiography presented cardiac events during follow-up: two patients died, one had a myocardial infarction and six had recurrent class III-IV angina. Among 80 patients with negative dobutamine-atropine stress echocardiography, one (1%) had myocardial infarction and six patients (7.5%) had recurrent angina. Event-free survival after 1 year for patients with a negative dobutamine-atropine stress echocardiography for ischaemia was 91% compared to 57% for those with a positive dobutamine-atropine stress echocardiography (P<0. 0001). Left ventricular dysfunction (P=0.01), prior myocardial infarction (P=0.03) and a positive dobutamine-atropine stress echocardiography (P=0.004) were independent predictors of cardiac events during follow-up.Dobutamine-atropine stress echocardiography is safe in unstable angina if it is performed when patients remain asymptomatic for at least 48 h. A negative dobutamine-atropine stress echocardiogram for ischaemia predicts a good prognosis in medically treated patients with unstable angina and may allow their early discharge from hospital. Good prognostic information was obtained despite the use of beta-blockers and low heart rates during dobutamine-atropine stress echocardiography." @default.
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• W2163691631 date "2000-07-01" @default.
• W2163691631 modified "2023-10-18" @default.
• W2163691631 title "Feasibility and prognostic value of dobutamine–atropine stress echocardiography early in unstable angina" @default.
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• W2163691631 doi "https://doi.org/10.1053/euhj.1999.1856" @default.
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