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Family History and Warning Symptoms Precede Sudden Cardiac Death in Arrhythmogenic Right Ventricular Cardiomyopathy

Angelica Maria Delgado-Vega1, Varvara Kommata2, Bodil Svennblad3

  • 1Department of Immunology, Genetics, and Pathology, Uppsala University, Uppsala, Sweden.

The American Journal of Cardiology
|July 14, 2022
PubMed

Insights

Arrhythmogenic right ventricular cardiomyopathy (ARVC) often precedes sudden cardiac death (SCD) in young individuals. Many victims experienced cardiac symptoms and had a family history of SCD, highlighting the need for better early detection.

Area of Science:

  • Cardiology
  • Genetics
  • Public Health

Background:

  • Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart condition.
  • ARVC accounts for approximately 4% of sudden cardiac death (SCD) in young individuals in Sweden.

Purpose of the Study:

  • To investigate the circumstances preceding SCD in young ARVC victims.
  • To identify warning signs for improved risk stratification and early diagnosis.

Main Methods:

  • Retrospective nationwide study of 22 autopsy-confirmed ARVC cases (<35 years) from 2000-2010.
  • Data collected from national registries, clinical records, family interviews, and autopsy reports.
  • Comparison with age-, gender-, and geographically-matched population controls.

Main Results:

  • 68% experienced cardiac symptoms (syncope, chest discomfort) within 6 months of death.
  • 36% sought medical care for cardiac symptoms; hospital visits were significantly higher than controls.
  • 45% had a family history of SCD; 41% died during exercise.
  • Only 1 case was diagnosed with ARVC before death.

Conclusions:

  • Young SCD victims with ARVC often exhibit preceding cardiac symptoms, increased healthcare utilization, and a family history of SCD.
  • Enhanced awareness of these warning signs is crucial for early detection and risk stratification.
  • Improved diagnostic strategies are needed to identify ARVC before fatal events occur.

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