When assessing an adult's internal ear canal with an otoscope, which action is appropriate?

When assessing an adult's internal ear canal with an otoscope, which action is appropriate?

• A. Pull the auricle down and back.
• B. Insert the speculum slightly down and forward.
• C. Insert the speculum 2 to 2.5 cm (0.8 to 1 in).
• D. Make sure the speculum does not touch the ear canal.

Answer: (B)

When using an otoscope on an adult, the aim is to straighten the ear canal and guide the instrument along its natural slope toward the tympanic membrane. This is done by pulling the pinna up and back to straighten the canal, then inserting the speculum with a gentle downward and forward angle so you follow the canal toward the eardrum. This alignment provides a clear view while minimizing discomfort or trauma. Pulling the pinna down and back would not straighten the adult canal correctly and makes visualization harder. Inserting the speculum too deep—about two centimeters or more—can risk contact with the tympanic membrane or cause unnecessary discomfort. While you should avoid pressing the speculum hard against the canal walls, the priority is careful, gentle insertion to view the canal and eardrum, not avoidance of any contact at all.

When using an otoscope on an adult, the aim is to straighten the ear canal and guide the instrument along its natural slope toward the tympanic membrane. This is done by pulling the pinna up and back to straighten the canal, then inserting the speculum with a gentle downward and forward angle so you follow the canal toward the eardrum. This alignment provides a clear view while minimizing discomfort or trauma.

Pulling the pinna down and back would not straighten the adult canal correctly and makes visualization harder. Inserting the speculum too deep—about two centimeters or more—can risk contact with the tympanic membrane or cause unnecessary discomfort. While you should avoid pressing the speculum hard against the canal walls, the priority is careful, gentle insertion to view the canal and eardrum, not avoidance of any contact at all.