ECGs of structural heart disease: Part 2

Ayyachamy SS, Teo SG, Tay ELW, Yip JWL, Poh KK
Correspondence: A/Prof Poh Kian Keong, kian_keong_poh@nuhs.edu.sg

ABSTRACT
Electrocardiography (ECG) is a simple, noninvasive tool to identify cardiac conduction abnormalities. Bundle branch blocks are frequently associated with  various medical conditions, some of which could be life  threatening if not treated. Right bundle branch block  is relatively common when compared to left bundle  branch block. Echocardiography is helpful for identifying  any structural abnormalities in order to ascertain the  prognostic significance of a bundle branch block. Diagnostic tests such as nuclear stress test, multislice computed tomography coronary angiogram, and even invasive coronary angiogram, may be indicated in selected patients.

Keywords: ECG, echocardiography, left bundle branch block, right bundle  branch block
Singapore Med J 2012; 53(2): 77–81