title: The mask: style and volume do not influence rhinomanometry.
abstract: We have tested the influence of face-mask style and volume on rhinomanometric measurements. Using an artificial head-and-piston pump to standardize the test conditions, four types of face masks (volumes varying from 120 to 200 ml) have been tested in a series of 20 measurements per mask. No statistical difference could be found between the series using a Chi-square test. We conclude that there is no influence of form and volume of the face mask on the accuracy of the rhinomanometric measurement.
authors.affiliation: Department of Otorhinolaryngology/Head and Neck Surgery, University Hospital, Zürich, Switzerland.
authors.forename: C A
authors.initials: CA
authors.lastname: Maranta
authors.forename: J L
authors.initials: JL
authors.lastname: Scherrer
authors.forename: D
authors.initials: D
authors.lastname: Simmen
mesh_terms: D000403:Airway Resistance; D004867:Equipment Design; D006801:Humans; D008365:Manometry / Q000295:instrumentation* / Q000592:standards; D008397:Masks; D008961:Models, Structural; D015508:Nasal Obstruction / Q000175:diagnosis*; D015203:Reproducibility of Results