Protecting Your Family
If you have been diagnosed with Idiopathic Dilated Cardiomyopathy (IDC), meaning your DCM was not caused by a heart attack, infection, toxins, or other known causes for dilated cardiomyopathy, you may have a genetic cause.
If it is known or suspected that you have genetic DCM and, because DCM can develop silently, sometimes for years without symptoms, clinical screening for your family members is recommended to detect early changes and start treatment before significant heart damage occurs.
Who Should Be Clinically Screened?
The Heart Failure Society of America (HFSA) recommends screening all first-degree relatives of individuals diagnosed with IDC, even if they feel healthy. This includes:
- Parents
- Siblings
- Children
What Does Clinical Screening Involve?
Screening is non-invasive and helps establish a “baseline” of heart health. A comprehensive evaluation typically includes:
- Medical History & Physical Exam: Review of personal and family heart health history.
- Electrocardiogram (EKG/ECG): A quick test to assess the heart’s electrical rhythm.
- Echocardiogram (ECHO): An ultrasound to measure heart size and pumping function (ejection fraction).
Why Clinical Screening Matters
Medical research shows that 35–50% of idiopathic DCM cases are genetic and may run in families. The good news is that DCM is treatable. Modern therapies, such as ACE inhibitors, beta-blockers, and other heart failure medications, can improve heart function, reduce heart size, and most importantly help affected people live longer.
Early detection is key. Screening allows family members to start treatment promptly, often before symptoms appear or the heart muscle is significantly damaged.
Action Steps for You and Your Family
- Be the Family Historian
Keep track of your own and your family members’ medical records. Death certificates or medical records mentioning heart failure or sudden cardiac death can help build an accurate family history. - Start the Conversation
Share your diagnosis with your parents, siblings, and adult children. Explain that because DCM can run in families, their doctors should establish a heart health baseline. (To prepare for a conversation with your family, download GCAC’s Family Discussion Guide.) - Consult a Professional
Discuss your family’s risk with a cardiologist, genetics professional, or genetic counselor. They can guide decisions about genetic testing for you and your relatives. - Consider Research Participation
If possible, get involved in DCM research. By contributing to studies, you help scientists identify the genes involved in DCM, which can accelerate the development of future treatments.
Early awareness and screening empower families to manage DCM more effectively and can help protect the next generation.
For more information, please visit the Genetic Cardiomyopathy Awareness Consortium at: www.geneticcardiomyopathy.org