例1,女,58岁,1987年4月9日因胸闷、心悸、气促10多天入院。两维超声心动图诊断风心病,二尖瓣狭窄、房颤。心电图示频速型房颤伴房扑,2∶1传导,Q-T 0.40秒,经地高辛等治疗仍频速房颤。4月27日给丙吡胺0.2,每日3次,口服。4月30日突然晕厥、紫绀,呈叹息样呼吸,心跳停止,经 Example 1, female, 58 years old, April 9, 1987 due to chest tightness, palpitations, shortness of breath more than 10 days admission. Two-dimensional echocardiography diagnosis of rheumatic heart disease, mitral stenosis, atrial fibrillation. Atrial fibrillation with atrial fibrillation frequency of atrial flutter, 2: 1 conduction, Q-T 0.40 seconds, the treatment of atrial fibrillation by digoxin and so on. April 27 to give pyridine 0.4, 3 times daily, orally. April 30 Suddenly fainting, cyanosis, a sigh-like breathing, heartbeat stopped, after