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.
For an epidural: 1  The doctor injects medicine just outside of the sac of fluid around your spinal cord. This is called the epidural space.  The medicine numbs, or blocks feeling in a certain part of your body so that you cannot feel pain. The medicine begins to take effect in about 10 to 20 minutes. It works well for longer procedures. Women often have an epidural during childbirth.