Model of O'Mahony et al for Sudden Cardiac Death in a Patient with Hypertrophic Cardiomyopathy (HCM Risk-SCD)

Parameters:

(1) maximal wall thickness in mm

(2) left atrial diameter in mm

(3) maximal left ventricular outflow tract gradient in mm Hg

(4) family history of sudden cardiac death

(5) non-sustained ventricular tachycardia (NSVT; >= 3 consecutive ventricular beats at a rate >= 120 beats per minute and < 30 second duration by Holter monitoring for >= 24 hours)

(6) unexplained syncope

(7) age at clinical evaluation in years

prognostic index =

= SUM(points for all of the parameters)

probability of sudden cardiac death at 5 years =

= 1 - (0.998^EXP(prognostic index))

Performance:

• The area under the ROC curve is 0.70.