Eligibility Criteria
All published studies including case reports and interventional studies
reporting original patient data were included. The inclusion criteria
were: studies published in English, studies where PNN was performed
either with or without additional procedures, and where measures of
objective/subjective outcomes and/or complications were reported.
Studies were excluded if they were unavailable in English, undertaken on
animals, included patients with chronic rhinosinusitis with nasal
polyps, or if other neurectomy procedures (eg vidian neurectomy) were
performed instead of PNN.