奎尼丁中毒多与其剂量呈正相关,高血浀度的中毒表现为P波增宽畸形、房率减慢、房内传导阻滞、最终心房静止,在血浀度极度增高出现室性心动过速或心室颤动前常有QRS波增宽。但偶有因特异体质,心肌对奎尼丁有特异敏感性,室性心律失常出现在治疗或低于治疗血浀度时。兹介绍一例服小剂量奎尼丁出现心动过缓心动过速综合症。 Quinidine poisoning and its dose was positively correlated, hyperlipidemia poisoning manifested as P wave broadening deformity, room rate slowed, room conduction block, the ultimate atrial quiescence, extreme high blood hyperphagia occurred ventricular tachycardia QRS wave is often widened before speed or ventricular fibrillation. However, occasionally due to specific physique, myocardial specificity of quinidine, ventricular arrhythmias appear in the treatment or lower than the treatment of blood stasis. Here to introduce a case of small doses of quinidine occurred bradycardia tachycardia syndrome.