主治医师：今天我们查房重点讨论急性心肌梗死时心律失常的特点及其处理方法，下面请主管医生介绍病历。住院医师；患者，男，55岁。该患者于今晨6时自感胸部门痛，持续2个小时不缓解而入院。近3年来每当劳累时则出现胸骨后中上段部位疼痛，为压榨性的，休息片刻即可缓解。每次 Attending Physician: Today we round out the discussion focused on the characteristics and treatment of arrhythmia in acute myocardial infarction, the following doctor in charge of introducing medical records. Resident, male, 55 years old. The patient had chest pain at 6 am this morning and continued for 2 hours without admission. Nearly 3 years when tired when the upper part of the chest after the emergence of pain, for the sexual, rest for a moment to ease. Each