Air entrainment oxygen masks are designed to deliver accurate oxygen concentrations and may also humidify the inhaled gases. A study of four such masks revealed that the accuracy of oxygen delivery could vary with design characteristics. At certain settings under some conditions, 100 per cent oxygen was seen to be inadvertently delivered. We suggest that oxygen concentrations delivered by this type of device be periodically measured to ensure patient safety.
Get full access to this article
View all access options for this article.
References
1.
CampbellEJM: Oxygen therapy in diseases of the chest. Br J Dis Chest58:149, 1964.
2.
CampbellEJM: Methods of oxygen administration in respiratory failure. Ann NY Acad Sci121 (Art 3):861, 1965.
3.
CampbellEJM: Respiratory failure. Br Med J1:14511965.
4.
SchiffMM, MassaroD: Effect of oxygen administration by a venturi apparatus on arterial blood gas values in patients with ventilatory failure. N Eng J Med277:950, 1967.
5.
HuntWB: Low flow oxygen in respiratory failure treatment. Continuing EducationFeb1974.
6.
SmithJP, StoneRW, MuschenheimC: Acute respiratory failure in chronic lung disease. Observations on controlled oxygen therapy. Am Rev Resp Dis97:791, 1968.
7.
BedonGA, BlockAJ, BallWC: The 28% venturi mask in obstructive airway disease. Arch Intern Med125:106, 1970.
8.
ChusidEL, MillerA, SamortinT, DalyE: Treatment of hypoxemia- A new mask for delivering controlled low-concentration oxygen. JAMA214:889, 1970.
9.
KingTKC, AliN, BriscoeWA: Treatment of hypoxia with 24% oxygen-a new approach to the interpretation of data collected in a pulmonary intensive care unit. Am Rev Resp Dis108:19, 1973.
