Hypertrophic cardiomyopathy (HCM) is a genetic heart condition affecting about 1 in 500 people and is one of the leading causes of sudden cardiac death (SCD) in people under 35, including among athletes.1 NSVT (nonsustained ventricular tachycardia), a known marker for increased risk of SCD in HCM, was detected in nearly 50% of HCM patients in the study undergoing long-term continuous ambulatory ECG monitoring of up to 14 days with a Zio® XT LTCM ECG patch device; 63% of NSVT episodes detected only after 48 ...