Podcast #243: Sphenopalatine Nerve Block
Emergency Medical Minute · medicalminute
August 25, 20174m 53s
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Show Notes
Author: Don Stader, M.D.
Educational Pearls
- Cluster headaches are usually intense, unilateral, and involve the periorbital area.
- CN V (Trigeminal) provides sensory and autonomic innervation the face and eyes, which play roles in headache pathology.
- Cluster headaches can be treated with high flow oxygen, but a new treatment involves blocking the sphenopalatine ganglion (SPG) with lidocaine. Because sensory and autonomic branches of the trigeminal traverse the SPG, lidocaine will effectively treat a cluster headache.
- To block the ganglion, intranasal lidocaine may be used, or a Q-tip soaked in 4% lidocaine can be applied to the most posterior aspect of the pharynx for 10-15 minutes.
References: https://www.aliem.com/2017/03/trick-sphenopalatine-ganglion-block-primary-headaches/