Fig. 1
From: In a case of female-to-male sex reassignment, testosterone therapy switches on an underlying Brugada
Original tracing showing basal (from left, first panel), pre-test (from left, second panel), test (from left, third panel), and post-test (from left, last panel) ECG. In the basal ECG, incomplete right bundle branch block and saddle-back-like ST deviation in V1. The test ECG after flecainide clearly shows a typical pattern of Brugada. Basal tracing was obtained before starting testosterone therapy; the suspect ECG was the pre-test showing the changes in ST segment