JACC. Case reports · 2026
Recurrent Syncope and Ventricular Standstill Due to Phase 4 His-Purkinje Block.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Ошибки и ограничения
История · было → стало
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Ahmad Fahed, Lo Charmaine Chu Wen, Youssef George, Ilsar Rahn
Аннотация
CASE SUMMARY: A 66-year-old man with prior atrial fibrillation ablation presented after nearly drowning due to abrupt syncope without prodrome. He reported recurrent monthly episodes for 2 years. Baseline electrocardiogram showed sinus rhythm with left bundle branch block; echocardiography was normal. Telemetry captured a premature atrial beat precipitating ventricular standstill consistent with a phase 4 infranodal block in a diseased His-Purkinje system. Recovery showed transient high-grade Mobitz II block with dynamic QRS changes, indicating diffuse conduction disease. Permanent pacemaker implantation was performed.
TAKE-HOME MESSAGES: Phase 4 block causes unpredictable syncope in His-Purkinje disease. Dynamic QRS changes suggest advanced conduction system involvement requiring pacing.
TAKE-HOME MESSAGES: Phase 4 block causes unpredictable syncope in His-Purkinje disease. Dynamic QRS changes suggest advanced conduction system involvement requiring pacing.