title: Patency of the nasofrontal duct during frontal sinusitis.
abstract: In a series of frontal sinuses trephined due to frontal sinusitis the airway resistance of the nasofrontal duct was tested during the healing period as well as in a long-term follow-up study up to one year. The nasofrontal duct was more resistant to passage for air than for saline during the healing period. A high incidence of recurrences was found in cases with high airway resistance of the duct, a prolonged primary healing period and when major nasal pathology was found.
mesh_terms: D000403:Airway Resistance; D005626:Frontal Sinus / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D009296:Nasal Cavity / Q000503:physiopathology*; D012008:Recurrence; D012306:Risk; D012852:Sinusitis / Q000503:physiopathology* / Q000601:surgery