Resuscitated cardiac arrest – Cardiology MCQ
Resuscitated cardiac arrest – Cardiology MCQ
Thirty year old male was resuscitated from cardiac arrest. His temperature was 37 degrees centigrade and serum potassium was 4.5 mEq/litre. ECG showed an abnormal wave at the end of the QRS complex. He is likely to have:
a) Hypertrophic obstructive cardiomyopathy
b) Long QT syndrome
c) Arrhythmogenic right ventricular dysplasia
d) Acute myocardial infarction
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Johnson Francis
Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal
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Without seeing an ECG I would assume most likely that the deflection at the end of the QRS is an epsilon wave and the patient suffers from arrhythmogenic right ventricular dysplasia/cardiomyopathy. The patient’s temperature rules out Osborne J waves of hypothermia (but not a choice here), and the normal potassium makes TdP (long QT syndrome) less likely, though it doesn’t totally rule it out. Neither a) nor d) are characterized by abnormal waves at the end of the QRS interval.
Arrhythmogenic right ventricular dysplasia
C)
B.
Right ventricular dysplasia, epsilon waves
It’s arrhythmogenic rt ventricular dysplasia
c
C
ARVD