Implantable Cardioverter Defibrillator (ICD)
Advanced Protection Against Sudden Cardiac Arrest
What is an ICD?
An ICD is a specialized device placed under the skin that constantly monitors your heart rhythm. If it detects a life-threatening, rapid heartbeat (Ventricular Tachycardia or Fibrillation), it delivers a controlled electrical shock to "reset" the heart to a normal rhythm.
The Three Components:
- Pulse Generator: The battery and computer "brain."
- Logic Circuit: The sensor that detects abnormal rhythms.
- Leads: Fine wires that deliver the life-saving therapy.
What does a shock feel like?
Most patients describe a full ICD shock as a sudden, brief "thump" or "jolt" to the chest. While it can be startling, it is the device doing its job to save your life. Many times, the device uses "overdrive pacing" to fix the rhythm with small impulses you may not feel at all.
Living with your ICD
Driving
Your doctor will advise on driving restrictions, usually for 6 months after an implant or a shock, to ensure your safety and the safety of others.
Cell Phones
Safe to use! Simply hold the phone to the ear opposite your ICD and avoid keeping it in a breast pocket directly over the device.
Electronics
Standard household appliances are safe. Avoid strong magnetic fields, industrial welders, or leaning over an open car engine.
Follow-Ups
Batteries typically last 4 to 8 years. We check your device every 3 to 6 months via office visits or remote monitoring.
The Recovery Process
Immediate: You will likely stay overnight for monitoring. Avoid lifting the arm on your ICD side above shoulder level for 4 weeks.
Going Home: You'll receive a temporary ID card. A permanent card will follow; always carry this to alert security at airports or other medical providers.