Answer - Case of the month (Nov 2010)

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Question: What rhythm is shown on the ECG and what may be the cause?

A. AV nodal rhythm due to vagal manoeuvre

B. Sinus rhythm with second degree AV block due to old inferior myocardial infarction

C. Sinus rhythm with second degree AV block due to acute inferior myocardial infarction

D. Sinus rhythm with first degree AV block due to old inferior myocardial infarction

E. Sinus rhythm with first degree AV block due to acute inferior myocardial infarction

Answer:

D: Sinus rhythm with first degree AV block due to old inferior myocardial infarction