Two-dimensional echocardiographic evaluation of ventricular asynergy induced by Dipyridamole: Correlation with thallium scanning

N. Ferrara, D. Bonaduce, D. Leosco, G. Longobardi, P. Abete, G. Morgano, M. Salvatore, F. Rengo

Research output: Contribution to journalArticlepeer-review

Abstract

Myocardial asynergies detected by two-dimensional echocardiography during intravenous administration of Dipyridamole (0.75 mg/kg) were evaluated in 54 patients referred for angiographic evaluation of chest pain. Technically adequate two-dimensional echocardiograms suitable for analysis were recorded in 42 of 54 (77.7%) patients studied. Thallium-201 myocardial perfusion scintigraphy, during dipyridamole test was performed in the same patients. Thirty of the 42 patients studied showed significant coronary narrowing at cardiac catherization. Dipyridamole-induced wall motion abnormalities and myocardial perfusion defects were detected, respectively, in 19 (63.3%) and 21 (70%) of 30 patients with significant coronary artery disease. Wall by wall comparison of the distribution of dipyridamole-induced echocardiographic asynergy with reversible thallium-201 (201Tl) perfusion defects demonstrated complete correlation in 42 segments examined. Three segments with perfusion defects at thallium scanning did not show asynergy during the test while two segments showing wall motion abnormalities during dipyridamole infusion did not manifest perfusion defects. Our study demonstrates that two-dimensional echocardiography during dipyridamole testing is useful in detecting patients with coronary artery disease. Furthermore, ventricular asynergies detected during the test show a high correspondence with site of myocardial perfusion defects at thallium scanning.

Original languageEnglish
Pages (from-to)437-442
Number of pages6
JournalClinical Cardiology
Volume9
Issue number9
Publication statusPublished - 1986

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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