ICD

ICD (Internal Cardioversion Device): this device can detect and treat ventricular tachycardia and ventricular fibrillation. Usually the first treatment is anti-tachy pacing (pacing at a rate +- 10% above the ventricular rate in ventricular tachycardia, which can convert the rhythm to sinus rhythm). If this is not effective an defibrillator shock is delivered, usually with 16-36 Joules of energy. ICDs can save lives in patients who have a high risk of ventricular arrhythmias. All ICDs have optional pacemaker activity to treat bradycardias. New biventricular ICDs have 3 leads: an atrial lead, a left ventricular lead and a right ventricular lead.

An ICD (Internal Cardioversion Device)

File:ICD implantation.jpg

An ICD is usually implanted subcutaneously

The information stored in the ICD's memory can be read out using a coil that is put on the patients clothing near the ICD. Stored information includes battery life remaining and ICD shocks