5th July 2026

A 38-year-old male with a family history of HCM attends a cardiology clinic.

A 38-year-old male with a family history of HCM attends a cardiology clinic. He reports feeling generally unwell with shortness of breath, fatigue, and intermittent chest discomfort. On examination, a new systolic murmur is noted. His vital signs are as follows: BP 125/75, HR 97, RR 17, SpO₂ 96% on room air, and temperature 37.4°C. Given his symptoms and family history, you suspect HCM. He undergoes routine blood tests, and his ECG is suggestive of left ventricular hypertrophy. Which diagnostic test is most appropriate for confirming the presence of HCM in a symptomatic patient?  

Select the SINGLE most appropriate option from the list below. Select ONE option only.