(Cardiomyopathy, Hypertrophic—Adult; HCM—Adult; Idiopathic Hypertrophic Subaortic Stenosis—Adult; Asymmetric Septal Hypertrophy—Adult; ASH—Adult; HOCM—Adult; Hypertrophic Obstructive Cardiomyopathy—Adult)
Hypertrophic—can be divided into two types:
- Hypertrophic obstructive cardiomyopathy (HOCM)—the muscle between the two valves of the heart becomes so enlarged that it obstructs the blood flow in the heart
- Non-obstructive hypertrophic cardiomyopathy—non-obstructive form, the enlarged muscle is not large enough to block blood flow
|Normal Heart and Heart With Hypertrophic Cardiomyopathy|
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- A gene that causes the abnormal structure of the heart muscle. It can be inherited or can happen from changes in the genes over time.
- A defective gene that controls growth of the heart muscle
- A viral infection
- Having a family member with HCM
- Being over age 60 and having hypertension
- Chest pain
- Fainting, particularly during exercise
- Lightheadedness, particularly following exercise
- Rapid heartbeat
- Shortness of breath or difficulty breathing
- General fatigue
- Tiring easily during exercise or activity
- Shortness of breath when lying down
Alcohol Septal Ablation
Implantable Cardioverter Defibrillators (ICD)
- If you have a family member who has been diagnosed with HCM, then you and other family members should be screened for the condition.
- If family history puts you at higher risk for HCM, then regular echocardiograms may reduce the risk of death or complications from HCM.
- If you have high blood pressure, take medications and follow other instructions as directed by your physician.
American Heart Association http://www.heart.org
Cardiomyopathy Association http://www.cardiomyopathy.org
Canadian Cardiovascular Society http://www.ccs.ca
Heart and Stroke Foundation of Canada http://www.heartandstroke.com
Cardiomyopathy in adults. American Heart Association website. Available at: http://www.heart.org/HEARTORG/Conditions/More/Cardiomyopathy/Cardiomyopathy%5FUCM%5F444459%5FSubHomePage.jsp. Accessed September 30, 2014.
Erwin JP, Nishimura RA, et al. Dual chamber pacing for patients with hypertrophic obstructive cardiomyopathy: a clinical perspective in 2000. Mayo Clin Proc . 2000;75:173-180.
Hypertrophic cardiomyopathy. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated May 19, 2014. Accessed September 30, 2014.
Maron BJ, Nishimura RA, et al. Assessment of permanent dual chamber pacing for patients with hypertrophic cardiomyopathy. Circulation. 1999;99:2927-2933.
McCully RB, Nishimura RA, et al. Extent of clinical improvement after surgical treatment of hypertrophic obstructive cardiomyopathy. Circulation. 1996;94:467-471.
What is HCM? St. Luke's Roosevelt Hospital Center website. Available at: http://www.hcmny.org/whatis/index.html . Accessed September 30, 2014.
- Reviewer: Michael J. Fucci, DO
- Review Date: 08/2014 -
- Update Date: 09/30/2014 -