Criteria for an Implantable Cardiac Defibrillator (ICD)
- An implantable cardiac defibrillator is indicated for
ventricular tachycardia that is resistant to usual medical
- It could also be considered if the patient is intolerant of the
- If there is a history of MI, the patient
should be at least 40 days after STEMI before a
defibrillator is implanted.
- Furthermore, the defibrillator is meant to be a long-term
treatment, and the patient should not have any other conditions that
could cause an earlier death; life expectancy should be at least
- EF should be <30%, even if there are no symptoms.
- EF <35% + Symptoms of heart failure > 40 days after STEMI
- The etiology of cardiomyopathy is not a consideration as long as
the other criteria are met.
- An ICD is not indicated in patients with STEMI who do not
experience VF or sustained ventricular tachycardia more than 48 hours
after MI if the ejection fraction is ≥0.4.
Source: abfm.org, SAMS module.