What is an implantable cardioverter defibrillator?

Life saver. An implantable cardioverter defibrillator (icd) system has leads (wires) that are inserted through the veins under the collarbone and threaded to the heart. The leads are attached to a box that goes under the skin. The box has a computer that continuously monitors the signals from your heart for a dangerous arrhythmia. If this occurs, the icd stops the arrhythmia by delivering an internal shock.
ICD. Icds are implanted to monitor the electrical activity of very abnormal hearts to see if a life threatening rhythm occurs. If it detects one of these rhythms, it will charge its capacitor and fire a shock to defibrillate the heart back to stable rhythm. In appropriate patients these devices save lives.

Related Questions

What patients need an implantable cardioverter defibrillator?

Ventricular Arrhythm. Patients that have dangerous arrhythmias such as ventricular tachycardia or ventricular fibrillation are the usual candidates for an implanted cardio-verter defibrillator or icd. Read more...
VT/VF, certain other. In addition to preventing dangerous ventricular arrhythmias (which can cause sudden cardiac death) in people who have had these, in certain select cases cardioverter defibrillators have use for prevention of these heart rhythms in people who are at high risk for them. This can include certain cardiomyopathies, also some cases of congestive heart failure (combined with a biventricular pacemaker). Read more...

What benefit does the implantable cardioverter-defibrillator give to patients who have had a cardiac arrest or heart attack?

Prevent recurrence. Depending on the reason for cardiac arrest, an automatic implantable defibrillator can be very effective in preventing a second cardiac arrest in the future. Read more...
It may prevent death. Implantable cardioverter-defibrillators (icds) are used to treat ventricular tachycardia or ventricular fibrillation, which if untreated, may cause a fatal cardiac arrest. Icds can often quickly treat these conditions before permanent brain or heart damage can be done. Icds are not used to treat or prevent heart attacks, which are a "plumbing" issue. Read more...

What patients should get an implantable cardioverter-defibrillator (icd) for heart failure?

See Below. This is somewhat complex and will not all fit in 400 characters so I am creating initials. 1. Ischemic cardiomyopathy, i.C., with ejection fraction, ef, >30% but <35%, newyorkheartassoc, nyha, class ii or iii, and >30 days post mi/revascularization. 2. Ic, ef <30%. 3. Ic, ef between 36-40% with inducible ventricular fibrillation or tachycardia, 4. Non-ic with ef <35% and nyha class ii or greater. Read more...
New Guidelines. This is somewhat complex and will not all fit in 400 characters so I am creating initials. 1. Ischemic cardiomyopathy, i.C., with ejection fraction, ef, >30% but <35%, newyork heartassoc, nyha, class ii or iii, and >30 days post mi/revascularization. 2. Ic, ef <30%. 3. Ic, ef between 36-40% with inducible ventricular fibrillation or tachycardia, 4. Non-ic with ef <35% and nyha class ii or greater. Read more...

What can be done for implantable cardioverter defibrillator versus heart bypass surgery?

Different indication. Aicd for arrhythmias and ventricular tachycardia and does not revascularize. Bypass for coronary blockage (which can have arrhythmias) to improve circulation and sometimes stops arrhythmias induced by ischemia- low flow. Read more...

What is the function of an implantable cardioverter-defibrillator?

Shock the heart. The device has the abiltiy to sense when your heart is beating in an abnormal and dangerous way which could lead to you passing out or having your heart stop. It then delivers an electric shock to the heart to convert the abnormal rhythm back to normal. The device also can function as a pacemaker if your heart beat becomes too slow. Read more...
Terminate arrhythmia. These are devices which may detect and automatically treat malignant (life-threatening) arrhythmias. Those include ventricular tachycardia and ventricular fibrillation. They use either bursts of rapid pacing or one or more high energy shocks. Patients receive these either after an arrhythmic event or prophylactically because they are at risk for these arrhythmias. Read more...

What is the significance of an implantable cardioverter-defibrillator?

Defibrillation. An automatic implantable cardioverter-defibrillator (aicd) is a lfe-saving device. The device continuely monitors the heart rhythm. When an abnormal rhythm is detected it attempts to restore a normal sinus rhythm (nsr), a cardioversion via shock or pacing alogorithms. However, when it detects a life threatening rhythm such as ventricular fibrillation it applies an immediate shock to restore nsr. Read more...

What happens during surgery of an implantable cardioverter-defibrillator?

AICD Surgery. Aicd or automatic implantable cardioverter defibrillator surgery is done under deep sedation anesthesia. Chest veins are entered and two or three leads are placed into the heart in the right venticle & atrium, and coronary sinus. The leads are connected to the aicd pacemaker and placed under the skin in your chest. The device is checked to be certain that it will function if a rhythm problem. Read more...
Sedation. The patient is sedated or anesthetized. Incision is made. Venous access is done. Needle, introducers, and wires are passed to proper position with fluoroscopic - xray control and tested electronically. Then a device nice - the aicd is attached. The wound is closed. Read more...

What patient aftercare is required for implantable cardioverter-defibrillator?

Office and hospital. Initial postimplantation care centers on wound healing. Subsequent followup relates to monitoring the function of the device. Regular office visits are required to assure that the device is functioning normally. As the devices can be life saving, close attention is paid to battery life so that the device can be replaced before the battery fails. Read more...

Is an implantable cardioverter defibrillator usually efficient?

Yes. Implanted cardioverter defibrillators (icds) are the most effective treatment in terminating dangerous arrhythmias. Icds are not 100% effective, but are significantly better than medication alone. Read more...
Yes. Aicd can detect rapid heart beat and stop the cardiac arrhythmias by either overdrive pacing or delivering the shock. It is programmed at certain zone of heart rate. For exemple if it is programmed at 180 beats the device will deliver the treatment at at heart rate of above 180. Read more...