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Tympanostomy Tubes 2022

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3 Table 1. Abbreviations and Definitions of Common Terms (cont'd) Term Definition Hearing assessment A means of gathering information about a child's hearing status, which may include caregiver report, audiologic assessment by an audiologist, or hearing testing by a physician or allied health professional using screening or standard equipment, which may be automated or manual. Does not include use of noisemakers or other non-standardized methods. Acute otitis media (AOM) e rapid onset of signs and symptoms of inflammation of the middle ear, usually diagnosed by a distinctly bulging tympanic membrane and the presence of a middle ear effusion. Persistent AOM Persistence of symptoms or signs of AOM during antimicrobial therapy (treatment failure) and/or relapse of AOM within one month of completing antibiotic therapy. When 2 episodes of otitis media occur within 1 month, it may be difficult to distinguish recurrence of AOM (i.e., a new episode) from persistent otitis media (i.e., relapse). Recurrent AOM 3 or more well-documented and separate AOM episodes in the last 6 months OR at least 4 well-documented and separate AOM episodes in the last 12 months with at least 1 in the last 6 months. Middle ear effusion (MEE) Fluid in the middle ear from any cause, but most oen from OME and during, or aer, an episode of AOM. Conductive hearing loss (CHL) Hearing loss, from abnormal or impaired sound transmission to the inner ear, which is oen associated with effusion in the middle ear. Sensorineural hearing loss (SNHL) Hearing loss that results from abnormal transmission of sound from the sensory cells of the inner ear to the brain. Tympanostomy tube otorrhea (TTO) Discharge from the middle ear through the tube, oen caused by AOM. Retraction pocket A collapsed area of the tympanic membrane into the middle ear or attic with a sharp demarcation from the remainder of the tympanic membrane. Tympanogram An objective measure of how easily the tympanic membrane vibrates and at what pressure it does so most easily (pressure- compliance function). If the middle ear is filled with fluid (eg, OME), vibration is impaired and the tracing will be flat; if the middle ear is filled with air, but at a higher or lower pressure than the surrounding atmosphere, the peak on the graph will be shied in position based on the pressure (to the le if negative, to the right if positive).

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