The provider places a catheter for the purpose of providing continuous infusion of a drug, such as an anesthetic, steroid, or opioid drug, into the space next to and around the vertebrae of the thoracic spine. He may instill these drugs to relieve pain or, in the case of steroids, reduce swelling and inflammation after a surgical procedure. He may also use image guidance (live, real–time images displayed on a video monitor) while performing this procedure.
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