[ST-T segment alternans in ventricular tachycardia associated with inversion of the U wave in Prinzmetal angina during exercise test. Description of a clinical case].

A case of ST segment alternans during effort angina is described. This is the seventh such case in the literature. Here the alternans appeared during a ventricular tachycardia. As with the other cases in literature, the alternans took place during an ischemic attack which affected the anterior wall.