ICDs are used in patients at risk for:
Implantable Cardioverter Defibrillators
Cardioversion is a procedure that uses an electrical shock to restore a normal heart rhythm. It is used to treat a variety of heart rhythm disorders, including atrial fibrillation, atrial flutter, and ventricular tachycardia.
How does an ICD work?
An ICD is made up of two parts: a pulse generator, which includes the battery and several electronic circuits, and wires called leads. The leads are placed inside the heart or on its surface and are attached to the pulse generator.
Once the ICD is implanted, the leads monitor your heart rate. If the ICD detects ventricular tachycardia or fibrillation, it sends out a controlled burst of impulses (called “overdrive” pacing). If that does not work, the ICD “shocks” the heart to restore a normal rhythm. Newer ICD devices can also work like a pacemaker if a slow heart rate (bradycardia) occurs.
Why do I need an ICD?
- Ventricular tachycardia, when the lower chambers of the heart independently beat faster than 100 beats per minute.
- Ventricular fibrillation, when the muscle fibers of the lower chambers of the heart contract in a fast, uncoordinated manner.
- Sudden cardiac arrest caused by arrhythmias.
How is an ICD implanted?
ICD implant surgery is usually done while the patient is asleep. It is not open-heart surgery, but it does require a small incision in the chest. The procedure usually takes about two hours. You will need to stay in the hospital for at least one night after the device is implanted.
Once the ICD is implanted, the leads monitor your heart rate. If the ICD detects ventricular tachycardia or fibrillation, it sends out a controlled burst of impulses (called “overdrive” pacing). If that does not work, the ICD “shocks” the heart to restore a normal rhythm. Newer ICD devices can also work like a pacemaker if a slow heart rate (bradycardia) occurs.
What is life like after ICD implantation?
After ICD implantation, you will need to follow your doctor's instructions carefully. You will need to take care of the incision site and avoid strenuous activity for a few weeks. You will also need to have regular checkups with your doctor to make sure the ICD is working properly.
If you are considering ICD implantation, talk to your doctor about the risks and benefits of this treatment.
If you are experiencing symptoms of AF, please contact your doctor today. We look forward to helping you get back to your active life.
