Page 374 - Saunders Comprehensive Review For NCLEX-RN
P. 374

Before performing an otoscopic exam and inserting the

                                                speculum, check the auditory canal for foreign bodies. Instruct the client
                                                not to move the head during the examination to avoid damage to the
                                                canal and tympanic membrane.
                                                             a. The client’s head is tilted slightly away
                                                                and the otoscope is held upside down
                                                                as if it were a large pen; this permits
                                                                the examiner’s hand to lay against the
                                                                client’s head for support.
                                                             b. In an adult, pull the pinna up and back
                                                                to straighten the external canal.
                                                             c. Visualize the external canal while
                                                                slowly inserting the speculum.
                                                             d. The normal external canal is pink and
                                                                intact, without lesions and with
                                                                varying amounts of cerumen and fine
                                                                little hairs.
                                                             e. Assess the tympanic membrane for
                                                                intactness; the normal tympanic
                                                                membrane is intact, without
                                                                perforations, and should be free from
                                                                lesions.
                                                             f. The tympanic membrane is transparent,
                                                                opaque, pearly gray, and slightly
                                                                concave. The cone of light reflex is
                                                                noted at 5 o’clock on the right and 7
                                                                o’clock on the left, and there is positive
                                                                mobility when the client swallows.
                                                             g. A fluid line or the presence of air
                                                                bubbles is not normally visible.
                                                             h. If the tympanic membrane is bulging or
                                                                retracting, the edges of the light reflex
                                                                will be fuzzy (diffuse) and may spread
                                                                over the tympanic membrane.




                                                                       The otoscope is never introduced blindly

                                                                into the external canal because of the risk of
                                                                perforating the tympanic membrane.
                                             9. Refer to Chapter 56 for diagnostic tests related to the
                                                ear.
                                           10. Client teaching
                                                             a. Instruct the client to notify the PHCP if
                                                                an alteration in hearing or ear pain or
                                                                ringing in the ears occurs, or if redness,
                                                                swelling, or drainage from the ear is
                                                                noted.



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