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Bonnet application
Depending on the facility’s preference, the clinician
may use either a bonnet or headgear fixation device. To
select the appropriate bonnet size, use the colored sizing
guide provided.
Tip: Bonnet sizing—Do not use a head
circumference measurement, as it does not
provide an accurate measurement.
Select the correct bonnet size
1. Start at the center of the forehead, measure to the nape
of the neck and measure back to the center of the
forehead. The colored squares and numbers on the
sizing guide correlate to the bonnet size. For example,
match the green square to the green trim on the bonnet,
which is size 5. (chart A) The cotton fabric on the bonnet
stretches a little. If between sizes, select the smaller size.
Apply the bonnet
2. With help from another clinician, align the tip of the
bonnet pad with the center of the forehead and nose.
Gently pull the bonnet down over the infant’s head
until the ears are covered. The button holes should be
positioned over the ears.
Attach the support block
3. Remove the support cradle from the generator assembly,
and position it in the center of the forehead strap.
Press the three tabs down. Ensure that the support cradle
does not overlap the edge of the strap or touch the
patient’s skin.
Chart A—Sizing guide