Role of local anaesthetic nerve block in endoscopic sinus surgery: A systematic review and meta-analysis.

Sphenopalatine ganglion LAB with adrenaline carries relatively low risk of morbidity, but may improve the quality of the surgical field in terms of bleeding. However, there are limitations of the study due to heterogeneity of methods, quality and size of the studies. Well-conducted large RCTs are needed using standardised inclusion criteria, balanced baseline characteristics of cohorts, and validated subjective and objective outcome measures.