The sphenopalatine ganglion (SPG) is a collection of nerve cells located just beneath the tissue lining the back of the nose. An SPG block is an in-office procedure that provides patients with immediate relief from migraine headaches.
During the procedure, a SphenoCath® device delivers a local anesthetic to the SPG through the nasal cavity without the use of needles, cotton swabs, or harsh medications. By applying a local anesthetic to the SPG nerve cells, nerve impulses are blocked, providing temporary relief from migraine headache discomfort and facial pain.
For most patients, the procedure is well tolerated with only a few recipients feeling brief and very minor irritation of the nasal passages.
Your first appointment will take approximately 60 minutes, where you will first be evaluated to determine if you are a candidate for sphenopalatine ganglion (SPG) block. Subsequent appointments will take 20 - 30 minutes.
You will lie down on an exam table. An interventional radiologist (a board-certified physician) will use a SphenoCath® device to deliver a local anesthetic such as lidocaine (the same or similar medication used by a dentist) to your SPG though your nasal passage. The SphenoCath® is small and soft and the procedure is not painful. An SPG block using the SphenoCath® takes two to three minutes. You will remain in a flat or reclined position for 10-15 minutes afterwards to maximize the benefit.
Following the SPG block you will need to have someone available to drive you home if you are not able to safely drive yourself. Refrain from eating or drinking for two hours after the procedure and avoid strenuous activity for 24 hours.