Risk for Cardiac Arrest: CMR in HCM Challenge
An electrocardiogram is notable for sinus rhythm (Figure 1). Markedly abnormal T waves with diffuse inversions in the limb and precordial leads are present.
Cardiac magnetic resonance (CMR) imaging reveals increased wall thickness of 24 mm, no obstruction, left ventricular (LV) septal late gadolinium enhancement (LGE)/scar burden in the septum of 18% (red arrow in Figure 2), and normal LV size and systolic function with an ejection fraction (EF) of 68%.
Which one of the following statements is true?