What is the definition or description of: epidural block?

Epidural space inj.: Injection of local anesthesia or narcotics into the epidural space surrounding the spinal cord, most often at the lumbar level.

See below: The epidural route is frequently employed by certain physicians and nurse anaesthetists to administer diagnostic (e.g. Radiocontrast agents) and therapeutic (e.g., glucocorticoids) chemical substances, as well as certain analgesic and local anaesthetic agents. Epidural techniques frequently involve injection of drugs through a catheter placed into the epidural space.

Epidural block: An epidural block is a procedure usually performed by an anesthesiologist in order to block pain during or after surgery. It can also be used for pain control during labor and involves the injection of local anesthetics and other medications via a needle or catheter into the space surrounding but outside of the spinal cord and it membranes. The are done with the patient seated or lying down.