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Improper mask size
1. The mask is too large if the top of the mask rests on
the glabella, the area between the eyebrows.
2. The mask is too large if the bottom of the mask covers
the infant’s lips.
3. The mask is too small if the mask does not cover the
perimeter of the nose and the bottom of the mask
occludes nares.
Corrective action: Use the sizing guide to select the
proper mask size.
Incorrect side strap tension
4. The straps are too tight if the bellow is compressed,
and the cushion has collapsed.
5. The strap tension is uneven if the bellow is compressed
on one side.
Corrective action: Loosen the side straps on the fixation
device. Lift the mask up, and reposition it on the infant’s
face. Readjust the strap tension to ensure the bellow and
cushion are not collapsed. The infant’s nares should be
clearly visible in the assessment window.
Tip: The interface must be the correct size, and the fixation
device must be properly applied to ensure the generator
assembly is properly aligned and stable.
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