Case Report
Copyright ©2013 Baishideng Publishing Group Co.
World J Cardiol. Sep 26, 2013; 5(9): 359-363
Published online Sep 26, 2013. doi: 10.4330/wjc.v5.i9.359
Figure 1
Figure 1 Resting electrocardiogram demonstrating sinus rhythm at 48 bpm with slow progression of R wave in the right precordial leads V1-V4 without delayed conduction (A) and during exercise tolerance testing at a heart rate of 80 bpm a left bundle branch block occurred which persisted into the recovery period (B).