Image Based Question – 74306

Identify the diagnosis from the following electrocar-diogram:

A. 2:1 heart-block

B. Trifascicular block

C. First degree heart block

D. Atrial fibrillation

Correct Answer » A Explanation

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.