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Familial dilated cardiomyopathy.

M A Schmidt1, V V Michels, W D Edwards

  • 1Department of Medical Genetics, Mayo Clinic, Rochester, Minnesota 55905.

American Journal of Medical Genetics
|September 1, 1988
PubMed
Summary
This summary is machine-generated.

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Familial dilated cardiomyopathy is more common than previously thought, often missed without thorough family history reviews. Early diagnosis in relatives using echocardiography can prevent sudden death and enable genetic counseling.

Area of Science:

  • Cardiology
  • Genetics
  • Public Health

Background:

  • Idiopathic dilated cardiomyopathy (IDC) is typically viewed as a sporadic, non-genetic condition.
  • Familial occurrences of IDC are often considered rare.

Observation:

  • Investigation of 6 families revealed that familial IDC may be more prevalent than initially suspected.
  • The hereditary nature of IDC was not evident in 3 families until comprehensive family studies were conducted.
  • Clinical presentations and age of onset varied significantly among and within families.

Findings:

  • Familial dilated cardiomyopathy occurs more frequently than previously recognized.
  • Thorough family history reviews are crucial for identifying potential hereditary cases.
  • Echocardiography serves as an effective noninvasive method for screening relatives.

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Implications:

  • Recommended that all patients diagnosed with dilated cardiomyopathy undergo a detailed family history assessment.
  • Further investigation of relatives is advised if unexplained heart disease, sudden death, or syncope exists in the family.
  • Early detection of affected relatives allows for timely treatment of arrhythmias to prevent sudden cardiac death and facilitates genetic counseling.