How the Fortify Assura™ ICD Works
An ICD is a minicomputer implanted under the skin of your upper chest. It senses your heart rate and rhythm through thin insulated wires called leads, which run from the computer and connect to your heart tissue.
When the ICD detects an abnormal rhythm that is dangerously fast, it sends an electric pulse to the heart to stop the cycle and restore a normal heartbeat. Sometimes the shock may be noticeable, and other times you may not feel a thing.