
358
TABLE 2: Summary of airflow values associated with fixed facemask air pressure
conditions and facemask strap tension levels for the Prototype facemask.
TABLE 3: Summary of airflow values associated with a 5 cmH
2
O mask air pressure level
at various strap tension levels for the ResMed
TM
facemask and the Prototype facemask
when an 8mm closed tube was placed between the mask interface and the face.
4 ANALYSIS
The observed facemask airflow conditions are the result of air escaping at the
mask-skin interface. The mouth and nose of the manikin were sealed so that no air
could escape through these openings. Therefore, the observed ...