EVALUATION OF CANADIAN MASK SIZE TEMPLATE FOR POSSIBLE USE IN FITTING A-14 OXYGEN MASKS.
Research rept. (final),
NAVAL SCHOOL OF AVIATION MEDICINE PENSACOLA FLA
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Tests were made on 100 men with the Canadian template and with the fitting of the A-14 mask according to the template designation of each man. The men were typed according to the Wright Field Faces. The results showed that the large sized faces and the majority of the small sized faces were typed correctly. In the medium group, there were 16 failures in 74 men. Conclusions The template for estimation of the mask sizes is a valuable instrument for an approximate extimation of the proper size of the large, medium or small mask on man. It is suggested that for the A-14 mask, the dividing line between the S and the M be increased 5 mm. in favor of S. This change would move most of the failures in the medium group over into the small group. Author