Chest pain and exercise induced left bundle branch block – A clinical dilemma

• Main Authors: Surender Deora, Jai Bharat Sharma, Rahul Choudhary, Atul Kaushik
• Format: Article
• Language: English
• Published: Wolters Kluwer Medknow Publications 2019-01-01
• Series: Journal of Family Medicine and Primary Care
• Subjects: angina pectoris; coronary artery disease; exercise induced; left bundle branch block
• Online Access: http://www.jfmpc.com/article.asp?issn=2249-4863;year=2019;volume=8;issue=10;spage=3434;epage=3436;aulast=Deora

Exercise-induced left bundle branch block is a rare electrocardiographic phenomenon. We present two patients with angina pectoris who developed left bundle branch block on ECG during treadmill test. The first patient had non-obstructive coronary arteries with slow flow and is a rarely reported entity. The second patient had typical chest pain with single vessel Coronary Artery Disease. Left bundle branch block occurred in stage I of Treadmill Testing and persisted for approximately 4 hours and then reverted spontaneously. These two interesting cases of this rare phenomenon are presented here with review of relevant literature.