case_images: PMC10033205_01
case_images: Resting ECG at admission. Tachycardic atrial fibrillation with irregular rhythm at a heart rate of 111 beats per minute. Repolarization showed signs of left ventricular hypertrophy.
case_images: CRIC2023-6555998.001.jpg
case_images: PMC10033205_01_CRIC2023-6555998.001.jpg
case_images: fig1
case_images: A 37-year-old male patient presented to our emergency department with dyspnea, palpitations, and AF (Figure 1). Additionally, performed cardiac MRI confirmed the reduced LVEF, however, without any signs of HCM (end-diastolic interventricular septum thickness: 11 mm) despite repolarization abnormalities in the initial resting electrocardiogram (ECG, Figure 1).
case_images: Cardiac MRI of the patient's brother (1.5 Tesla, cine sequence). (a) End-diastolic septal myocardial hypertrophy with maximum measured septum thickness of 17.9 mm. (b) End systolic septal myocardial hypertrophy with maximum measured septum thickness of 22.5 mm.
case_images: CRIC2023-6555998.002.jpg
case_images: PMC10033205_01_CRIC2023-6555998.002.jpg
case_images: fig2
case_images: HCM (Figure 2). His father was affected by AF with onset in his twenties.
case_images: Resting ECG at 1.5-year follow-up. Regular sinus rhythm at a heart rate of 55 beats per minute with persistent signs of left ventricular hypertrophy.
case_images: CRIC2023-6555998.003.jpg
case_images: PMC10033205_01_CRIC2023-6555998.003.jpg
case_images: fig3
case_images: At 1.5-year follow-up, the patient was asymptomatic without any signs of AF in resting (Figure 3) and long-term ECG.