Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular disease. Our team at Weill Cornell Medicine understands that every individual with HCM is affected differently, and our goal is to offer a holistic evaluation and a personalized treatment plan for you and your family members. With our multidisciplinary team, you can be confident in the care you receive.

What is Hypertrophic Cardiomyopathy (HCM)?

Hypertrophic cardiomyopathy is a genetic condition in which the heart muscle becomes abnormally thick (a process called hypertrophy). This thickening can make it harder for the heart to relax and fill properly, and in some cases, it can block blood flow out of the heart. Over time, the thickened muscle may also develop areas of scarring that can affect the heart’s electrical system and pumping function. HCM can be obstructive or nonobstructive. In obstructive HCM, the thickened muscle partially blocks blood flow leaving the heart. In nonobstructive HCM, the muscle is thickened but does not significantly block blood flow. Common symptoms include shortness of breath (especially with exertion), chest pain, palpitations, lightheadedness, fainting, and abnormal heart rhythms such as atrial fibrillation or ventricular tachycardia. However, some people with HCM may have few or no symptoms.