Before the procedure, you will have an intravenous (IV) line started in a vein, usually in your hand or arm. This will be used to inject intravenous fluids and medications during your procedure. An anesthesiologist or nurse anesthetist will provide light sedation thru IV to help you relax as well as a local anesthetic at the surgical site as needed.
Your physician will make a small needle puncture at the insertion site in the chest. He or she will insert the lead wire(s) through the blood vessel and gently guide them into the heart. (As above, for an S-ICD, the generator will be placed under the skin on the left side of your chest instead, and the wires will be attached to your breastbone.)
You will need to remain very still for this part of the procedure. When the lead(s) are connected, your physician will test them. He may use video x-ray to check the location.
Your physician will then attach the lead wire(s) to the generator and slip the generator under your skin through the incision.
Your physician will then withdraw the catheter, and you will be taken to a recovery room until the anesthesia wears off. You will be discharged home the same day.