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Christine Jeffries

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First of Its Kind Defibrillator: S-ICD

By Mary Kyle Blogger
 
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First of Its Kind Defibrillator: S-ICD 0 5
S-ICD is the first defibrillator of its kind
Hemera/Thinkstock

The implantable cardioverter defibrillator, commonly referred to as an ICD, is a device used to treat ventricular arrhythmias.

ICDs sense irregular heartbeats and deliver high or low-energy electrical pulses or shocks to help the heart return to normal rhythm.

In addition to ventricular arrhythmias, ICDs might be recommended for anyone whose heart has been damaged as the result of a prior heart attack, sudden cardiac arrest or SCA, or certain congenital heart defects.

Implanted in either the abdomen or chest, an ICD is connected through wires with electrodes, or leads, which are inserted through veins into the heart.

While potentially life-saving, living with an ICD may not be for everyone.

People with ICDs must avoid contact with technology that contains magnetic fields such as microwave ovens, electrical generators, metal detectors, and welders. Even small electronic devices such as cells phone and iPods can interfere with ICD function.

Contact sports must be avoided because they increase the risk that the ICD leads will be dislodged or disconnected. Even when contact sports are avoided, leads can still become disconnected or break.

Surgery is required to repair or replace damaged leads. In addition, ICD batteries must be replaced every five to seven years.

In September, 2012, the U.S. Food and Drug Administration approved a request from Boston Scientific Corporation for a new type of ICD – the subcutaneous implantable defibrillator or S-ICD .

The S-ICD is the only subcutaneous ICD commercially available anywhere in the world. The S-ICD differs from current the ICD in several ways.

Unlike traditional ICDs, the S-ICD is implanted just below the surface of the skin. S-ICDs don’t require the use of electrodes or leads.

Instead, the S-ICD is inserted with a single lead near the heart, leaving the heart and veins free from intrusive devices. As with a traditional ICD, a shock is given if the electrode senses an irregular heartbeat.

The procedure to implant the S-ICD is less invasive. The incision required is much smaller with an S-ICD as compared to a traditional ICD.

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