Critical Heart Rate Dependent LBBB: Need Caution!

Author Info

Ravneet Kaur Gill Ashwani Mudgal

Corresponding Author

Ravneet Kaur Gill
Assistant Professor, Department of Anaesthesia, Dr B R Ambedkar State Institute of Medical sciences, Mohali, India

A B S T R A C T

Right bundle branch block (RBBB) and left bundle branch block (LBBB) are commonly seen in geriatric cases posted for surgeries. LBBB usually results from conduction system degeneration or myocardial pathology. LBBB is often associated with hypertension, myocarditis, coronary heart disease, aortic valve disease, cardiomyopathy etc. We report a case of diagnosed LBBB preoperatively posted for emergency spinal decompression. After induction of anaesthesia, the heart rate settled below 77 beats per minute (bpm) and led to reversion of LBBB to normal sinus rhythm. LBBB is a red flag diagnosis to the anaesthesiologist. But the knowledge of critical heart rate is important; below which the rhythm may revert back to normal sinus rhythm. The knowledge to differentiate between myocardial ischaemia and LBBB is the need of the hour.

Article Info

Article Type

Case Report

Publication history

Received: Thu 04, Aug 2022
Accepted: Tue 16, Aug 2022
Published: Tue 20, Sep 2022

Copyright

© 2023 Ravneet Kaur Gill. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Hosting by Science Repository.
DOI: 10.31487/j.SCR.2022.09.03