Advanced atrioventricular block induced by obstructive sleep apnea before oxygen desaturation
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Updated: Jun 22, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Ken-ichi Maeno1, Atsunobu Kasai, Morimichi Setsuda
1Division of Cardiology, Yamada Red Cross Hospital, Mie, Japan. maeken@zk9.so-net.ne.jp
Abstract:
We report a patient with transient advanced atrioventricular (AV) block induced by obstructive sleep apnea (OSA). This 54-year-old man was diagnosed as having severe OSA and AV block with ventricular asystole for more than 6 s during overnight polysomnography, which occurred just from the onset of OSA before oxygen desaturation had occurred. An electrophysiological study revealed normal AV conduction system function and normal His-Purkinje system function. The resolution of OSA with continuous positive airway pressure therapy improved the advanced AV block. Therefore, the bradyarrhythmia was determined to be an OSA-induced AV block that occurred before oxygen desaturation.
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