First Degree AV Block on Carbamazepine

Report:

Sinus rhythm 66/min

First degree AV block

PR interval 0.48”

Normal QRS-T morphology

Comment :

The patient had hydrocephalus from Dandy Walker abnormality requiring ventriculo-peritoneal shunting and severe epilepsy requiring several drugs, including carbamazepine (Tegretol). The latter is a known cause of AV block89,90, but one cannot be certain that it was responsible in this case.

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