The Effect of Sphenopalatine Block on the Postoperative Pain of Endoscopic Sinus Surgery: A Meta-analysis.

The use of sphenopalatine ganglion block (SPGB) with a local anesthetic to decrease postoperative pain after endoscopic sinus surgery (ESS) is controversial. We investigated the role of a perioperative SPB to minimize postoperative pain related to ESS in patients with chronic sinusitis through a systematic review of the relevant literature.