Division of Neurology, Department of Medicine, Sunpasithiprasong Hospital, Ubon Ratchathani, Thailand.
Division of Cardiology, Department of Medicine, Sunpasithiprasong Hospital, Ubon Ratchathani, Thailand.
BMJ Case Rep. 2022 Sep 14;15(9):e249819. doi: 10.1136/bcr-2022-249819.
We present a case of pyridostigmine-induced coronary artery spasm in a woman with early-onset myasthenia gravis (MG) who suffered from acute chest discomfort a few days after pyridostigmine dose up-titration. Twelve-lead ECG demonstrated ST-segment elevation in inferior limb leads together with sinus arrest. Sublingual nitrate was immediately given, which rapidly relieved her symptoms concomitantly with the resolution of abnormal ECG findings. Coronary angiography showed normal coronary arteries reflecting the transient nature of the disease. A small dose of pyridostigmine was rechallenged under close monitoring in the coronary care unit and reproduced her chest discomfort. After the substitution of pyridostigmine with immunosuppressive agents and prescription of long-acting nitrate, she had no recurrence of chest discomfort, as well as well-controlled MG symptoms.
我们报告了一例吡啶斯的明诱发的冠状动脉痉挛病例,患者为一名早发型重症肌无力(MG)女性,在吡啶斯的明剂量滴定增加几天后出现急性胸痛。12 导联心电图显示下肢体导联 ST 段抬高合并窦性停搏。立即给予舌下硝酸酯类药物,迅速缓解症状,同时心电图异常恢复正常。冠状动脉造影显示正常冠状动脉,提示疾病具有一过性特征。在冠心病监护病房密切监测下,重新给予小剂量吡啶斯的明,再次诱发胸痛。改用免疫抑制剂和长效硝酸酯类药物后,患者未再出现胸痛,MG 症状也得到良好控制。