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[Familial dilated cardiomyopathy]
1Szent-Györgyi Albert Orvostudományi Egyetem, Szeged, II. sz. Belgyógyászati Klinika.
Insights
Familial dilatative cardiomyopathy presents earlier and progresses faster than the nonfamilial form, with a significantly lower five-year survival rate. This genetic heart condition impacts younger individuals and has a poorer prognosis.
Area of Science:
- Cardiology
- Genetics
- Internal Medicine
Context:
- Dilatative cardiomyopathy (DCM) is a significant cause of heart failure.
- Understanding familial DCM is crucial for early diagnosis and management.
- This study reviews existing literature and presents new data on familial DCM.
Purpose:
- To provide a state-of-the-art overview of familial dilatative cardiomyopathy.
- To analyze the incidence, inheritance patterns, clinical presentation, and prognosis of familial DCM.
- To compare familial DCM with the nonfamilial form.
Summary:
- Familial DCM accounts for a notable incidence (21.5%) in DCM patients, predominantly with autosomal dominant inheritance.
- Familial DCM exhibits an earlier onset of cardiomegaly and symptoms compared to nonfamilial DCM.
- The five-year survival rate is significantly lower in familial DCM (23.1%) versus nonfamilial DCM (52.1%).
Impact:
- Highlights the aggressive nature and poorer prognosis of familial dilatative cardiomyopathy.
- Emphasizes the need for genetic screening in families with DCM.
- Informs clinical practice regarding earlier symptom onset and accelerated disease progression in genetic DCM.
Abstract:
The author surveys the literature and gives a state of art of familial dilatative cardiomyopathy including his own experience. In the past two decades, III familial dilatative cardiomyopathy cases have been encountered in 30 families in their own material, which means a 21.5 percent incidence rate as concerns the total number of dilatative cardiomyopathy patients. The inheritance pattern was autosomal dominant in the majority of the cases. Both cardiomegaly (20 vs 29.6 ys) and the complaints (29.9 vs 37.6 ys) displayed an earlier onset in familial dilatative cardiomyopathy than in the nonfamilial form. The characters of the signs and symptoms did not differ otherwise between the two groups. Significant differences were observed between the two groups in the progression of the disease: the five-year survival rate after the onset of the symptoms was 23.1 percent in the familial cases and 52.1 percent in the non-familial form (p = 0.026).