Cardioversion is a medical procedure done to restore a normal heart rhythm for people who have certain types of abnormal heartbeats (arrhythmias). Cardioversion is most often done by sending electric shocks to your heart through electrodes placed on your chest. Occasionally, your doctor may perform cardioversion using only medications to restore your heart's rhythm. Cardioversion is usually a scheduled procedure that's performed in a hospital, and you should be able to go home the same day as your procedure. For most people, cardioversion quickly restores a normal heart rhythm.
NMO spectrum disorder is a term used for patients who experience only relapsing optic neuritis or relapsing myelitis (but not both). In most cases, just the optic nerve and spinal cord of patients with NMO are affected. In very rare cases parts of the brain may also be affected.
If one of the 2nd cranial nerves (optic nerve) is damaged, the affected eye is blind. If any of the three cranial nerves that control eye movement (3rd, 4th, or 6th cranial nerve) is damaged, people cannot move their eyes normally. Symptoms include double vision when looking in certain directions. If the 3rd cranial nerve (oculomotor nerve) is paralyzed, the upper eyelid is paralyzed.