Make every effort to minimize the buildup
of oxygen and nitrous oxide beneath drapes and in the oropharynx.
For ophthalmic procedures, tent the operative and full-length body
drapes from the end of the nose to facilitate the dissipation of
gases. The use of an auxiliary support, such as a Mayo stand, may
be necessary to achieve adequate tenting.
Verification that all oxygen circuits are leak free
should be standard procedure before each surgical procedure.
The use of a pulse oximeter is standard practice.
This assists the anesthesia provider in determining whether or not
the administration of supplemental oxygen is necessary.
The ECRI recommendation is to stop supplemental oxygen
one minute prior to and during the use of electrosurgery.
They also recommend using room air or oxygen less than 30 percent
for delivery to the face.
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