Identify the diagnosis from the following electrocar-diogram:
A. 2:1 heart-block
B. Trifascicular block
C. First degree heart block
D. Atrial fibrillation
Ans: A. 2:1 heart-block
(Ref Harrison 19/e p1472, 1473 18/e p1835).
ECG in question:
- Typically seen in a 2:1 heart block.
- Type of 2nd degree AV nodal block.