McGill Case 149

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This case report is kindly provided by Michael Rosengarten from McGill and is part of the McGill Cases. These cases come from the McGill EKG World Encyclopedia.


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This is a strip from a 21 year old patient during threshold testing in the pacemaker clinic. The patient had congenital heart block for which a pacemaker was implanted. She was asymptomatic before the implant, and a dizzy period during the test below.