Clinical Resources

HCM Risk-SCD

5-Year Sudden Cardiac Death Risk in Hypertrophic Cardiomyopathy

years
Valid range: 16–80 years
mm
Measured by echocardiography
mm
Parasternal long-axis measurement
mmHg
Use the peak gradient obtained at rest or with Valsalva/exercise

ESC ICD Thresholds (2014 HCM Guidelines)

  • Low <4% — ICD generally not indicated
  • Intermediate 4–6% — ICD may be considered
  • High ≥6% — ICD should be considered

Not validated in patients <16 or >80 years, elite athletes, metabolic/infiltrative cardiomyopathies, or those with prior myectomy/septal ablation.

Reference

O'Mahony C et al. 2014 — A novel clinical risk prediction model for sudden cardiac death in hypertrophic cardiomyopathy (HCM Risk-SCD). European Heart Journal.