对55例心肌梗塞后进行过踏车运动试验的病人进行平均23个月的随访,发生心脏性死亡者4例,再发心肌梗塞3例,不稳定型心绶痛8例。上述心脏意外的发生与踏车运动时发生的ST段降低、血压异常、心绞痛、心律失常无明显关系,而与运动后QTc延长有一定关系。 55 patients with treadmill exercise test after myocardial infarction were followed up for an average of 23 months. Four patients had cardiac death, three patients had recurrent myocardial infarction, and eight patients had unstable heart-ache. The occurrence of cardiac accident and treadmill exercise occurred when the ST segment decreased, abnormal blood pressure, angina pectoris, arrhythmia no significant relationship, but with exercise after QTc extension of a certain relationship.