Case 149: A 74-Year-Old Man Scheduled for Cardiac Surgery
History
Diagnosis
ECG 2
ECG 2 Diagnosis
ECG Comparison
History
This 74-year-old man with a history of coronary artery disease is scheduled to undergo aorto-coronary bypass surgery: 
Diagnosis
ECG 2
Two days after successful and uncomplicated aorto-coronary bypass surgery, the following ECG is recorded:
ECG 2 Diagnosis
- Sinus rhythm, 70/min
- Right bundle branch block (RBBB), left anterior fascicular block (LAFB)
- RBBB + LAFB (bifascicular block)
In RBBB, the first 60 msec portion of the QRS reflects left ventricular activation. The presence of a left fascicular block can therefore be diagnosed:
ECG Comparison
ECG ID: E227