Topic Overview

Some people with hypertrophic cardiomyopathy are at high risk for sudden death. If you are at high risk, you may want to ask your doctor about an implantable cardioverter-defibrillator (ICD). An ICD can identify life-threatening arrhythmias and successfully restore a normal heartbeat.

Your doctor may suggest an ICD if you are at high risk for sudden death. You are at high risk for sudden death if you:¹

• Have had cardiac arrest or ventricular tachycardia in the past.
• Had a family member with hypertrophic cardiomyopathy who died suddenly or you have any of the genetic abnormalities associated with sudden death.
• Have fainted (syncope).
• Have had low blood pressure during or after exercise.
• Have extreme left ventricle thickness (more than 30 millimeters).