Masquerading Bundle Branch Block: A Poor Prognostic Sign Revisited

Dhanse, Suheil and Kareem, Hashir and Devasia, Tom and Rao, Sudhakar M (2016) Masquerading Bundle Branch Block: A Poor Prognostic Sign Revisited. Journal of Clinical and Diagnostic Research, 10 (9). pp. 1-2. ISSN 0973-709X

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Masquerading bundle branch block is a rare but important finding on the Electrocardiogram (ECG). It is an indication of severe and diffuse conduction system disease and usually indicates poor prognosis. The precordial leads show a Right Bundle Branch Block (RBBB) pattern while the limb leads resemble a Left Bundle Branch Block (LBBB). This finding on an ECG is almost invariably associated with severe underlying heart disease. It is extremely important to be aware of this finding as it is a marker of poor cardiac outcomes. We report the case of a 68-year-old gentleman, who presented with progressive dyspnoea on exertion over three months. ECG showed a broad QRS complex with a RBBB pattern on the precordial leads and a LBBB pattern on the limb leads (suggestive of masquerading bundle branch block). A coronary angiogram revealed severe Triple Vessel Disease (TVD). The patient was scheduled for an early Coronary Artery By-Pass Grafting Surgery. However, his clinical condition deteriorated and he died while awaiting the surgery.

Item Type: Article
Uncontrolled Keywords: Congestive heart failure; Left anterior hemi fascicular block; Triple vessel disease
Subjects: Medicine > KMC Manipal > Cardiology
Depositing User: KMC Library
Date Deposited: 15 Mar 2017 06:56
Last Modified: 15 Mar 2017 06:56

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