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Otoscopy
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Otoscopes - Purpose
• Transmit light down the ear canal to view the tympanic membrane, “landmarks, and canal walls
• Observe the color, luster, and flexibility of TM • Conditions Diagnosed:
– Otitis Media (“ear infection”) - an inflammation of the middle ear. TM appears red (normally gray-white). • Fluid and (sometimes) bacteria combine (pus) for infection.
– Otitis Media with effusion - fluid build-up in middle ear causes “bubbles” in the TM.
• Pneumatic Otoscopy: – Doctor uses insufflation bulb to apply positive and negative
air pressure to the TM and observe how flexible (or rigid in the case of fluid) it is.
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Otoscopes - Purpose
External Ear Canal
Tympanic Membrane
Tympanic Cavity
Malleus
Acute Otitis Media
Outer Ear/ (Pinna)
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How to do Otoscopy • Open the external auditory canal by pulling back (and
up on adults) on the pinna. • Holding the otoscope like a pencil, insert the
speculum tip into the ear canal. • Looking through the viewing lens, enter the ear canal
far enough so that the speculum fills the opening, avoiding contact with the walls of the canal, enabling a potential seal.
• Observer the Tympanic Membrane for color (gray-white) and luster (sharp triangle reflex).
• Pneumatic otoscopy would then be performed by attaching the insufflator bulb to the otoscope’s pneumatic port and then applying air pressure.