[Depression and elevation of the ST segment in the V4R lead during the stress test of a patient with a proximal lesion of the right coronary artery].
We report a patient with a proximal right coronary artery lesion in whom opposite shifts of ST segment in V4R lead were observed during and after exercise. ST-segment depression was provoked by exercise, while ST-segment elevation appeared in the recovery phase. We speculate that different degrees of myocardial ischemia (non-transmural vs transmural) may explain this apparently paradoxical response.
Prieto Solís
J A
JA
Servicio de Cardiología, Hospital Universitario Marqués de Valdecilla, Santander.
Ruiz Delgado
B
B
San José Garagarza
J M
JM
D000328:Adult; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography; D005080:Exercise Test; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000175:diagnosis