title: [The "high concentration" oxygen mask: a dangerous defect].
abstract: Three cases of unidirectional valve inversion in airtight oxygen masks are reported. These defects were discovered before use on a patient. One of the masks was tested on a healthy volunteer. It resulted in the rupture of the reservoir bag, with a oxygen leak and decrease in FiO2. Checking the valve before use is therefore mandatory, and fabrication procedures should be revised.
authors.affiliation: Département d'Anesthésie Réanimation, CHU La Timone, Marseille.
authors.forename: J J
authors.initials: JJ
authors.lastname: Bussac
authors.forename: R
authors.initials: R
authors.lastname: Bhudoye
authors.forename: J
authors.initials: J
authors.lastname: Borsarelli
mesh_terms: D004868:Equipment Failure; D006801:Humans; D010100:Oxygen / Q000032:analysis; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects*; D011482:Protective Devices; D012134:Respiratory Protective Devices
chemical_list: D010100:Oxygen
vernacular_title: Masque à oxygène "haute concentration": une malfaçon dangereuse.