All You Need To Know About an Implantable Cardioverter Defibrillator

Overview

An implantable cardioverter defibrillator is a battery powered device which is placed under the skin in a surgery to keep track of a patient’s heart rate. Thin wires connect the ICD to the heart, which, if an abnormal heart rhythm is detected, deliver an electric current to restore a chaotically or fast beating heart to a normal rhythm. ICDs are useful in preventing sudden death in patients with known, sustained ventricular tachycardia (a type of arrhythmia) or fibrillation. Studies have shown ICDs to have a role in preventing cardiac arrest in high-risk patients who haven't had, but are at risk for, life-threatening ventricular arrhythmias. They are a common occurrence now, as cardiologists advise patients with risk of arrhythmic problems to have it implanted.

Who Needs An ICD?

As mentioned above, a cardiologist or heart specialist may recommend an ICD if a patient has a life-threatening arrhythmic problem, but also if:

• The patient has had a ventricular arrhythmia
• Has had a heart attack
• Has survived a sudden cardiac arrest
• Has Long QT syndrome
• Has Brugada syndrome
• Has a congenital heart disease or any other condition which can result in sudden cardiac arrest

There are a few precautions one must take after an ICD has been implanted in the body, like being aware of ones surroundings and staying clear of devices that may cause a disruption in ICD’s signalling. Particularly devices with strong magnetic fields.

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