Transient Left Bundle Branch Block during the Perioperative Period

• Published in: Nihon Rinshō Masui Gakkai shi Vol. 12; no. 4; pp. 564 - 568
• Main Authors: Kuze, Shougo, Higuchi, Akiko, Ito, Yusuke, Shakunaga, Kiyoshi
• Format: Journal Article
• Language: English
• Published: THE JAPAN SOCIETY FOR CLINICAL ANESTHESIA 1992
• ISSN: 0285-4945; 1349-9149
• DOI: 10.2199/jjsca.12.564

We experienced 2 patients in whom transient left bundle branch block (LBBB) developed perioperatively. In the first case, a 40-year-old woman, it was difficult to distinguish the wide QRS wave pattern from ventricular tachycardia, because of the presence of atrial fibrillation. The wide QRS pattern was converted into the previous pattern by the administration of 10mg of diltiazem. In the second case, an 81-year-old woman, LBBB pattern was found before the induction of anesthesia. However, it disappeared immediately after 100% oxygen was given via a face mask. But it appeared intermittently during anesthesia, and became permanent from the 4th postoperative day. Neither patient showed any signs of myocardial damage, and both recovered uneventfully, and were discharged.