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Bristol Myers Squibb proudly supports heart health and the patient advocacy community in raising awareness about HCM.

The real impact of HCM

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Hypertrophic cardiomyopathy, or HCM, is a disease that affects the heart muscle and its ability to pump oxygen-rich blood to the rest of the body. In someone with HCM, the walls of the heart become thicker than they should be. This excessive thickening can cause the heart to become more stiff and leaves less room for blood to fill the heart. HCM can be a debilitating and life-changing disease that can reduce a person’s physical function and overall well-being. In fact, HCM is estimated to affect between 1 in 200 and 1 in 500 people in the general population, yet many people don’t know they have it.*

Early diagnosis may help

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Getting diagnosed early is important because a delayed or missed HCM diagnosis may put a patient’s health at greater risk. HCM can sometimes be described as a “hidden disease’’ because people who have it may not always have symptoms. And when HCM symptoms do appear, they may be difficult for doctors to recognize because they can be similar to other health conditions such as asthma, anxiety, hypertension, or coronary artery disease. Every case of HCM is different, and only a doctor can determine whether symptoms indicate HCM or another condition. If you’re experiencing any new or unexplained symptoms such as those found below, talk to your doctor as soon as possible.

Common symptoms of HCM can include:

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  • Shortness of breath

  • Tiredness

  • Rapid heartbeat

  • Chest pain

  • Feeling dizzy or lightheaded

  • Fainting

  • Fatigue

These are not all of the symptoms of HCM. Symptoms can be representative of many conditions. Only a healthcare provider can determine whether these symptoms indicate HCM or another condition.

What you can do

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Learn the signs

Increase your own awareness of the symptoms and impact of HCM—and encourage family and friends to learn more about this disease.

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Take action

If you’re experiencing unexplained symptoms such as those above, talk with your doctor and ask if you should see a cardiologist. 

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Get involved

Recognize and support the HCM community by visiting the websites of advocacy groups for more information.

* The CARDIA study [published in 1995] was a multicenter, US-population-based echocardiography study of 4111 subjects (aged 23-35) that identified the prevalence of HCM as 1:500 people in the general population.
The 2015 Semsarian publication identified that the prevalence of HCM gene carriers could be as high as 1:200.


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