Inserting the Needle The physician inserts a needle and carefully guides it to the nerves of the stellate ganglion. The physician typically uses an x-ray device called a “fluoroscope.” This shows a video image of the needle’s position. Contrast dye may be injected to help confirm that the needle is placed correctly.
Injecting the Medicine Next, the physician injects medicine. It bathes the nerves. It can numb the nerves and reduce inflammation. If these nerves have been a source of pain, the medicine can relieve it. The injection may also provide other benefits, depending on your needs.
End of Procedure When the procedure is complete, the needle is removed and the injection site is covered with a bandage. You will be monitored for a brief time before you can go home. After a stellate ganglion block, many people experience some noticeable temporary effects. The arm on the side where you were given the injection may feel warm and tingly. Your voice may be hoarse. You may have nasal congestion, a flushed face and a droopy eye. These effects are normal, and they usually disappear after a few hours. You may need to return for more injections in the future.