Transient left bundle branch block associated with hypoxia during monitored anesthesia care: A case report

Son, Hee Won; Park, Eun Sun; Huh, In Young; Kim, Kang Il; Lee, A Ran; Kim, An Suk; Park, Soon Eun; Kim, Sung Hoon

Case Report

Cardiothoracic and Vascular Anesthesia

Anesthesia and Pain Medicine 2014;9(2):119-122.
Published online April 30, 2014.

Transient left bundle branch block associated with hypoxia during monitored anesthesia care: A case report

Hee Won Son, Eun Sun Park, In Young Huh, Kang Il Kim, A Ran Lee, An Suk Kim, Soon Eun Park, Sung Hoon Kim

¹Department of Anesthesiology and Pain Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea. sunny5433@naver.com
²Department of Anesthesiology and Pain Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

Received: 5 August 2013 • Revised: 11 September 2013

Abstract

Transient left bundle branch block (LBBB) is uncommon during anesthesia. It is mainly related to the changes in blood pressure or heart rate. Its occurrence can be confused with acute myocardial ischemia or ventricular tachycardia, therefore differential diagnosis is important. We report a case of transient LBBB which developed with hypoxia during monitored anesthesia care. LBBB is reversed to sinus rhythm after recovery from hypoxia.

Key Words: Conscious sedation, Hypoxia, Left bundle branch block