What is the Difference Between ICD and Pacemaker?

An implantable cardioverter defibrillator (ICD) and a pacemaker are both medical devices used to treat arrhythmias, or abnormal heart rhythms. They are surgically implanted within the body and help regulate the heart's rhythm. However, they work differently and serve distinct purposes.

Pacemaker:

• Delivers low-energy electrical pulses to ensure the heart beats at a steady pace.
• Primarily used for people with slower heart rates.
• Implanted below the collarbone, with leads and a generator.
• Can speed up a slow heart rhythm, control a fast heart rhythm, and coordinate the chambers of the heart.

ICD:

• Slightly larger than a pacemaker and can deliver a shock if a dangerous rhythm is detected.
• Monitors heart rhythms and provides treatment called defibrillation when sensing dangerous rhythms.
• Used for those at risk of having life-threatening arrhythmias or sudden cardiac arrest.
• Can be combined with a pacemaker in one unit for people who need both functions.

Both devices require surgery for implantation, and patients may need to stay in the hospital for a day or two to ensure the device is working properly. Some ICDs can also act as both a pacemaker and a defibrillator, providing dual functionality.

Comparative Table: ICD vs Pacemaker

Implantable Cardioverter Defibrillators (ICD) and pacemakers are both medical devices that treat irregular heart rhythms, known as arrhythmias. They are surgically implanted and have different functions. Here is a table outlining the main differences between ICDs and pacemakers:

In summary, ICDs are designed to detect and treat life-threatening arrhythmias by delivering shocks, while pacemakers control abnormal heart rhythms using electrical pulses to maintain a steady heartbeat. Both devices require minor surgery for implantation and battery replacement, and they can be affected by certain electronic devices and magnetic fields.