A subcutaneous implantable cardioverter-defibrillator (S-ICD) is a less invasive alternative to a traditional ICD. The S-ICD device is placed under the skin at the side of the chest below the armpit and connects to a sensor that runs along the breastbone. This setup allows the device to monitor the heart's rhythm and deliver therapy (electrical shock) if a life-threatening arrhythmia is detected, without requiring leads to be placed directly into the heart.
Key Features of a Subcut ICD
| Feature | Description |
|---|---|
| Location | Placed under the skin, typically on the side of the chest below the armpit. |
| Leads | One lead is placed subcutaneously along the breastbone. |
| Invasiveness | Less invasive compared to traditional ICDs. |
| Function | Monitors heart rhythm and delivers electrical shocks to correct dangerous arrhythmias. |
| Advantage | Avoids direct contact with the heart, reducing the risk of certain complications. |
Benefits of Subcut ICDs
- Reduced risk of lead-related complications: Because the lead is placed under the skin instead of inside a blood vessel and attached to the heart, there's a lower chance of problems such as infections, blood clots, or lead dislodgement.
- Less invasive procedure: The implantation procedure is generally less complex than traditional ICD implantation.
- Suitable for specific patients: S-ICDs may be a better option for individuals who are at higher risk of infection or who have limited venous access (difficulty accessing veins for placing leads).
In summary, a Subcut ICD is an effective option for patients needing defibrillation therapy without the risks associated with transvenous leads.
