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.
The epidural space is the space outside the tough membrane called the dura mater (sometimes called the dura), and within the spinal canal, which is formed by the surrounding vertebrae. Adherent to the inside of the dura is a much thinner and more fragile membrane, the arachnoid mater.he epidural space is also of clinical interest since its cranial part contains vessels (e.g. the middle meningeal artery) susceptible to lesions after head traumas, causing a potentially lethal (if not treated immediately) collection of blood called an extradural or epidural hematoma.