You are using a pneumatic attachment on the otoscope while assessing tympanic membrane movement. You gently squeeze the bulb but see no movement of the membrane. Your next ac-tion should be to:
a. remove all cerumen from the canal.
b. change to a larger speculum.
c. squeeze the bulb with more force.
d. insert the speculum to a depth of 2 cm.
B
To see tympanic movement when using the pneumatic attachment, there should be a seal around the speculum to block outside air. In this manner, the normal tympanic membrane moves as a result of pressure changes from the insufflator bulb. A soft rubber speculum is recommended to establish the seal.
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