In the United States Navy, these consist of ships commissioned with hull classification symbols CV (aircraft carrier), CVA (attack aircraft carrier), CVB (large aircraft carrier), CVL (light aircraft carrier), CVN (aircraft carrier (nuclear propulsion)) and CVAN (attack aircraft carrier (nuclear propulsion)).
A cervical epidural steroid injection delivers steroids into the epidural space surrounding spinal nerve roots to help alleviate pain in the upper spine/neck. A Spine-health.com Peer Reviewed Article. typical immune response is the body generating white blood cells and chemicals to protect it against infection and foreign substances such as bacteria and viruses. Inhibiting the immune response with an epidural steroid injection can reduce the pain associated with inflammation.
How It Works. An epidural steroid injection (ESI) is a combination of a corticosteroid with a local anesthetic pain relief medicine. Corticosteroids are strong anti-inflammatory medicines. Relieving swelling and inflammation can take pressure off nerves and other soft tissues, which can relieve pain.n epidural steroid injection (ESI) may be tried when other nonsurgical treatments have failed to relieve severe leg pain from lumbar spinal stenosis. The corticosteroids in an ESI may help provide relief from leg pain by reducing swelling and inflammation.