PMC5030394_01
Patient's ECG, showing a first degree heart block with an intraventricular conduction delay. PR interval: 302 ms, QRS duration: 144 ms, and ventricular rate: 76 beats per minute.
CRIA2016-9278409.001.jpg
PMC5030394_01_CRIA2016-9278409.001.jpg
fig1
An ECG showed a first degree heart block with an intraventricular conduction delay; see Figure 1.