title: The airway resistance of the naso-frontal duct during and after acute frontal sinusitis. A long term follow-up of 49 trephined frontal sinuses.
abstract: A new pressure flow method for function tests and calculation of the airway resistance in the naso-frontal duct is presented. With this pressure flow technique the function and airway resistance of the naso-frontal duct was tested in 49 patients who were trephined for acute frontal sinusitis. The tests were performed during the primary healing period (0-16 days) and in a long term study 2, 6 and 12 months after operation. The patients were also checked radiologically and clinically. A prolonged healing period (more than 6 days) corresponded significantly to a high incidence of recurrent disease. With this method it is possible to define groups where recurrences might be expected because of impaired function of the naso-frontal duct.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000403:Airway Resistance; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D005626:Frontal Sinus / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000503:physiopathology*; D012008:Recurrence; D012852:Sinusitis / Q000503:physiopathology* / Q000601:surgery