The shock returns the heart rhythm to normal.
An ICD can be a lifesaving unit.
It also explains the difference between a heart defibrillator and a pacemaker.

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It also has wires called leads that connect to locations in the heart.
Some people with an ICD never experience the shock.
This also means that the rig is monitoring for and suppressing irregular heart rhythms.
There are some similarities between a heart defibrillator and a pacemaker, but they aren’t the same.
Apacemakeris a gear that sends an electrical impulse to the heart when it needs help to pump blood properly.
Procedure to Implant a Heart Defibrillator
An ICD procedure is typically done at a hospital.
You also will receive a local anesthetic at the surgical site.
Surgeons use the sheath to help insert the ICD lead wire into the blood vessels and the heart.
Before closing the incision, the medical team tests the gadget to ensure it works properly.
The entire procedure takes about an hour.
You will likely stay in the hospital overnight for monitoring.
How Long Can an ICD Last?
There may be other risks specific to your health conditions.
Electronics, Traveling, and Restrictions
Having a heart defibrillator can be life-changing and lifesaving.
The procedure to insert an ICD takes about an hour.
You usually stay at the hospital overnight to ensure the equipment works as it should.
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Johns Hopkins Medicine.Living with a pacemaker or an implantable cardioverter defibrillator or a pacemaker.