Figure 1.

A: Twelve-lead electrocardiogram taken during the initial hospital admission. Frequent polymorphic premature ventricular contractions in a bigeminal pattern were localized to the posteromedial mitral annulus. B: Parasternal long-axis transthoracic echocardiogram during diastole. C: Parasternal long-axis transthoracic echocardiogram during systole showing mitral annulus disjunction (MAD) of the posterior wall measuring 14 mm. D: Cardiac magnetic resonance imaging during diastole. E: Cardiac magnetic resonance imaging during systole showing MAD of the posterior wall measuring 13.7 mm.