The medicine is delivered directly through an IV site. Pain relief is normally rapid. The pump can also be programmed to provide a continuous basal infusion as well. With an IV PCA you may find that overall you actually need less pain medicine but experience better post-operative pain relief because you are able to get pain medication at the time you need it. . SubQ PCA or subcutaneous patient controlled analgesia is a mechanism developed to allow patients to deliver their own pain medicine in the hospital or at home.
Pain reliever is delivered directly through an implanted catheter directly under the skin.
The catheter is connected to a small electronic pump which will deliver a measured dose of pain medicine to you when you push the button. The pump can also be programmed to provide a continuous basal infusion as well. With an IV PCA you may find that overall you actually need less pain medicine but experience better post-operative pain relief because you are able to get pain medication at the time you need it. In regional analgesia, only a specific area of the body is targeted for pain relief. This type of pain control involves placing a needle near nerves supplying the area of the body to be operated on and injecting a pain reliever directly into this area.