Casey Bradley, Bahekar Amol, Patel Divyang, Guddeti Raviteja
Internal Medicine, Cape Fear Valley Medical Center, Fayetteville, USA.
Cardiology, Cape Fear Valley Medical Center, Fayetteville, USA.
Cureus. 2023 Jan 2;15(1):e33271. doi: 10.7759/cureus.33271. eCollection 2023 Jan.
Paroxysmal complete atrioventricular block (PCAB) is clinically characterized by a sudden change from 1:1 atrioventricular (AV) conduction leading to complete heart block. Patients may have a vast array of symptoms, but commonly, PCAB will lead to syncope and possible sudden cardiac death. The literature currently consists of three different types of PCAB: intrinsic paroxysmal atrioventricular block, extensive vagal paroxysmal atrioventricular block, and extrinsic idiopathic paroxysmal atrioventricular block. Currently, there is no single symptom or sign that is specific to a single type of AV block. PCAB is often missed or overlooked because of its unpredictability and no evidence of conduction disease with a normal 1:1 conduction on routine electrocardiograms. Here, we present a case of a 65-year-old female who has been intermittently symptomatic for four years and was found to have PCAB.
阵发性完全性房室传导阻滞（PCAB）的临床特征是从1:1房室（AV）传导突然转变为完全性心脏传导阻滞。患者可能有各种各样的症状，但通常PCAB会导致晕厥和可能的心脏性猝死。目前的文献中存在三种不同类型的PCAB：原发性阵发性房室传导阻滞、广泛性迷走神经性阵发性房室传导阻滞和外源性特发性阵发性房室传导阻滞。目前，没有单一症状或体征可特异性地诊断某一类型的房室传导阻滞。由于其不可预测性以及常规心电图上1:1传导正常时无传导疾病证据，PCAB常被漏诊或忽视。在此，我们报告一例65岁女性患者，她间歇性出现症状已四年，被发现患有PCAB。
