3. Attach the head strap to the top two clips of the mask. The GRAY side
of the head strap will be facing out.
4. Place the head strap over the crown of the client’s head with the
mask positioned over the client’s nose and mouth, as illustrated
below.
5. Adjust the Velcro straps of the head strap to the appropriate size.
6. Attach the bottom two clips of the head strap to the mask.
7. With the mask in place, check the fit in the following way:
a. Cover the expiratory end of the valve with the palm of your
hand.
b. Have the client blow out hard against your hand.
c. If you detect significant air leaking out around the mask,
adjust the Velcro straps for a better fit.
d. Repeat the blow test. If significant leaks still occur, consider
changing the size of the mask.
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