Overview
An implantable cardioverter-defibrillator (ICD) is a compact electronic device, surgically placed beneath the skin, designed to monitor and address potentially life-threatening heart rhythm disturbances. This device continuously monitors the heart's electrical activity and is ready to deliver electrical shocks or pacing therapy if it detects arrhythmias such as ventricular tachycardia or ventricular fibrillation. The ICD consists of a pulse generator and one or more leads, which are threaded through veins to connect with the heart. ICD is implanted in the chest, underneath the collarbone. ICDs offer the advantage of correcting both abnormally slow and fast heart rhythms.
Why it's Done?
Implantable cardioverter-defibrillators (ICDs) are typically offered to individuals facing a significant risk of sudden cardiac arrest. This includes those with advanced heart disease, a history of heart attacks, or perilous arrhythmias. It's also a consideration for those with weakened heart muscle, heart failure, or inherited rhythm disorders. The primary aim is to prevent sudden cardiac death by promptly detecting and correcting abnormal heart rhythms.
What to Expect?
Before the procedure, patients undergo a thorough evaluation. This includes tests such as an ECG, echocardiography, blood work, and occasionally more sophisticated imaging techniques. Patients have to fast for a few hours. ICD implantation usually uses local anesthesia and sedation. The procedure begins with a small incision near the collarbone. Using X-ray imaging, leads are inserted through a vein and into the heart. The ICD generator is then placed under the skin, and these leads are connected to it.
Finally, the device is tested to make sure it's working properly. In most cases, the procedure takes one to two hours. After the device is implanted, doctors monitor patients' heart rhythms and how well the device is working. Most people stay in the hospital for one to two days.
Recovery & Outlook
Most of the time, recovery goes smoothly, with only mild pain at the site of the implant. Patients should not move their arms too much for a few weeks. It is important to check the device's function regularly. Implantable cardioverter-defibrillators (ICDs) significantly reduce the likelihood of sudden cardiac death, extending the lives of those at heightened risk.