Dalili Mohammad, Rahimpoor Feisal
Rajaie Cardiovascular Medical & Research Center Iran University of Medical Sciences Tehran Iran.
Mashhad Cardiovascular Medical & Research Center Mashhad Iran.
Clin Case Rep. 2024 Oct 23;12(10):e9527. doi: 10.1002/ccr3.9527. eCollection 2024 Oct.
Neurally mediated syncope (NMS) is a well-known condition that can be subdivided into three subgroups: vasopressor type, cardioinhibitory type, and mixed type. While different degrees of sinus bradycardia occur at the time of syncope in all types, complete heart block is a rare event that can lead to pulselessness during syncope. We present a case of a 14-year-old girl with documented NMS before and after temporary pacemaker implantation, who had complete heart block during syncope. The patient's temporary pacemaker placement was ineffective in preventing syncope during a repeat head-up tilt test, indicating that permanent pacing may not be effective in this patient. Midodrine, an alpha-adrenergic agonist, was started, and the patient experienced complete control of syncope episodes without recurrence during a 2-month follow-up.
神经介导性晕厥(NMS)是一种众所周知的病症,可细分为三个亚组:血管加压素型、心脏抑制型和混合型。虽然在所有类型的晕厥发作时都会出现不同程度的窦性心动过缓,但完全性心脏传导阻滞是一种罕见事件,可导致晕厥时脉搏消失。我们报告一例14岁女孩,在临时起搏器植入前后均确诊为NMS,其在晕厥时发生了完全性心脏传导阻滞。在重复的头高位倾斜试验中,患者的临时起搏器置入未能有效预防晕厥,这表明永久性起搏对该患者可能无效。于是开始使用α-肾上腺素能激动剂米多君,在2个月的随访期间,患者的晕厥发作得到完全控制,未再复发。