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.
You will be prepped for a cardiac catheterization with one entry site, but instead of one catheter, your physician will use 3 to 5 special electrode catheters in one sheath. The catheters will be guided into the heart to record its electrical activity. You will be awake for the procedure, but you will probably be given a light sedative to relax you. You may feel your heartbeat skip or speed up, but you should not feel any pain.
Following the procedure, you will be taken to a recovery room, where you will rest for several hours before you are discharged.