What are the symptoms of sudden cardiac arrest?

Usually SCA strikes suddenly and without warning, leaving the patient unconscious. While there are often no warning signs before sudden cardiac arrest, some of these symptoms may come before sudden cardiac arrest:

  • Fatigue or weakness
  • Shortness of breath
  • Fainting
  • Dizziness or lightheadedness
  • Heart palpitations
  • Chest pain

Some people who are said to have died from a "massive heart attack" may instead have died from sudden cardiac death. The first and often only symptom of SCA is loss of consciousness – from lack of blood to the brain.

Brochure for Patients who have been prescribed an Impantable Defibrillator

Guide for Patients who have an Implanted Defibrillator