case_images: PMC6476131_01
case_images: ECG demonstrating sinus rhythm, normal atrioventricular conduction, normal QRS duration, and markedly prolonged QTc.
case_images: CRIC2019-4851073.001.jpg
case_images: PMC6476131_01_CRIC2019-4851073.001.jpg
case_images: fig1
case_images: His ECG demonstrated sinus rhythm with a prolonged corrected QT interval of 588 ms (normal <450) (Figure 1).