ISSN 1016-5169 | E-ISSN 1308-4488
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Relation of Exercise-induced ST-Segment Elevation to Myocardial Viability in Recent Q-Wave Myocardial Infarction [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 1997; 25(3): 143-148

Relation of Exercise-induced ST-Segment Elevation to Myocardial Viability in Recent Q-Wave Myocardial Infarction

Ayşe Emre PINARLI1, Metin GÜRSÜRER1, Mehmet AKSOY1, Turgut SİBER1, Seyfi USLUBAŞ1, Mustafa YAYLA1, Kemal YEŞİLÇİMEN1, Birsen ERSEK1

Detection of viable myocardium in the infarct zone is clinically important for identifying patients who will benefit from revascularization. To determine whether exercise-induced ST segment elevation in Q-wave myocardial infarction (MI) can be used as a simple method for viability assessment, we studied 30 patients with a first recent Q wave MI and with almost isoelectric (<1.0 mm elevated) STsegment on the resting electrocardiogram. Viability was determined by exercise T1-201 Single Photon Emission Computerized Tomography (SPECT) 9±2 weeks after MI.T1-201 reinjection protocol was used in patients who showed no redistribution on standard 3-hour images (persistent defect). Regional wall motion on ventriculography was graded semiquantitatively on a 7-segment model (normal=O; dyskinetic=3). Patients were divided into two groups according to the presence (group 1, n= 16) or absence (group 2, n=14) of exercise-induced ST elevation. Viability was detected in all 16 patients in group 1 and in only 8 (57%) patients in group 2 (p<0.01) There was no significant difference in the extent of underlying coronary artery disease between the two groups. Retrograde filling by collateral flow to the infarct-related artery was significantly better in group 1 compared to group 2 (p<0.02). Although wall motion abnormality score was significantly higher in group 1 compared to group 2 (4.6±1.8 vs. 3.1±1.2, p<0.02), no patient had left ventricular aneurysm. These results suggest that even if segmental wall motion is severely abnormal, exercise-induced ST elevation in recent Q wave MI is related to myocardial viability.


How to cite this article
Ayşe Emre PINARLI, Metin GÜRSÜRER, Mehmet AKSOY, Turgut SİBER, Seyfi USLUBAŞ, Mustafa YAYLA, Kemal YEŞİLÇİMEN, Birsen ERSEK. Relation of Exercise-induced ST-Segment Elevation to Myocardial Viability in Recent Q-Wave Myocardial Infarction. Turk Kardiyol Dern Ars. 1997; 25(3): 143-148
Manuscript Language: Turkish


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