Question 22#

A 66-year-old woman with a past medical history of hypertension undergoes DC cardioversion for atrial fibrillation. Immediately following the procedure, transient ST elevation is seen. The patient is asymptomatic post-procedure but cardiac enzymes are taken 12 hours later. These show a normal troponin I but a raised CK. The SHO calls you to advise him on the significance of the ECG and blood tests.
What do you advise?

A) The ST elevation and raised CK are probably not abnormal
B) A rise in troponin I, but not in troponin T, is sometimes seen following AF cardioversion
C) A rise in troponin T, but not in troponin I, is sometimes seen following AF cardioversion
D) Both troponin I and T are usually raised post-cardioversion
E) The raised CK suggests likely myocardial damage

Correct Answer is A


Transient ST elevation can be a normal finding post DC cardioversion. A rise in CK is also usually normal but neither troponin T nor troponin I should rise following DC cardioversion of AF.