Term
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Definition
| difference between air and bone threshold > 10dB. (Air is NEVER better than Bone). |
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Term
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Definition
| LDL (loudness discomfort level) - SRT (speech recognition/reception threshold) and don’t forget: SRT = PTA +/- 5dB (Speech Reception Threshold = Pure Tone Threshold) |
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Term
| Endogenous (etiology of hearing loss) |
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Definition
| internal causes of hearing loss: autosomal [a non-sex chromosome] dominant (20%) or autosomal recessive genetics (79%), or x-lined genetics (1%) for hearing loss. (See Exogenous) |
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Term
| Endogenous (etiology of hearing loss) |
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Definition
| internal causes of hearing loss: autosomal [a non-sex chromosome] dominant (20%) or autosomal recessive genetics (79%), or x-lined genetics (1%) for hearing loss. (See Exogenous) |
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Term
| Exogenous (etiology of hearing loss) (1) |
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Definition
| outside causes: disease, toxicity, trauma, noise. (See Endogenous) |
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Term
| Hearing Loss (Conductive) |
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Definition
| when air conduction audiogram is abnormal, and bone conduction audiogram shows normal hearing. Usually audio gram flat or better hearing in high (rising audiogram) |
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Term
| Hearing Loss (Sensioneural) |
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Definition
| Usually better hearing in low, and worse in high. “I can hear but I can’t understand.” Defined as abnormal hearing w/o ABG. Also normal in SN loss that they have a small dynamic range (they have SRT at high dBs, but their LDL (loudness discomfort level) doesn’t go up proportionally) |
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Term
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Definition
| better than 20dB HL on the audiogram. |
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Term
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Definition
| Age-related hearing loss. |
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Term
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Definition
| The PTA is the average threshold (for each ear [per book]) at 500, 1000, 2000 (“I can hear 500 Hz at 40dB, 1000 at 50db, and 2000 at 50dB... PTA = 46.67). The PTA should equal a persons threshold for understanding speech. [per class: if there is a precipitous drop in threshold between these three, drop the outlier]. NOTE: SRT = PTA +/- 5dB (That is: Speech Reception Threshold = Pure Tone Threshold +/- 5dB. |
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Term
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Definition
| Used in SRT testing. Two equally stressed syllables; Each syllable has a vowel and is also a word; Thresholds for these vowel-dominated words match low to mid frequency pure-tone threshold; Chosen as easily heard and understood words at threshold levels. EX: greyhound, schoolboy, inkwell, railroad, northwest, iceberg, toothbrush, oatmeal. |
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Term
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Definition
| Lowest sound intensity at which the patient can correctly identify at least 3/6 tone presentations. |
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Term
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Definition
| an examination used to test the condition of the middle ear and mobility of the eardrum (tympanic membrane) and the conduction bones by creating variations of air pressure in the ear canal. |
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Term
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Definition
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Term
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Definition
| Loudness discomfort level, upper level of one’s usable hearing (opposite of SRT); (see Dyanmic Range for Speech). |
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Term
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Definition
| Sound pressure level... measure of phsyical world, molecule disturbance. |
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Term
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Definition
| Sensation Level: referenced to individual’s own threshold. |
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Term
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Definition
| Speech Reception Threshold: a lot like an audiogram. Did you hear “breakfast,” no turn it up, yes turn it down. Lower limit of ones usable hearing (opposite of LDL); (see Dyanmic Range for Speech). |
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Term
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Definition
| Left ear unmasked air conduction |
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Term
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Definition
| Right ear unmasked air conduction |
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Term
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Definition
| left ear masked air conduction |
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Term
| Audiogram symbol: triangle |
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Definition
| right ear, masked air conduction. |
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Term
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Definition
| Left ear bone conduction unmasked |
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Term
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Definition
| right ear bone conduction unmasked |
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Term
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Definition
| Left ear bone conduction masked |
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Term
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Definition
| right ear bone conduction unmasked |
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Term
| Incidence of HL in an uncomplicated nursurey |
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Definition
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Term
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Definition
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Term
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Definition
| 98/1000 people w/ appreciable loss = +/- 30 mil with hearing loss (of them 1% Deaf). |
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Term
| Air conduction range of testing for audiogram |
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Definition
| 125 Hz --> 8000 Hz, 0dB HL --> 110 dB HL |
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Term
| Bone conduction range for audiogram |
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Definition
| 250 Hz --> 4000 Hz, 0dB --> 60dB. |
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Term
| First test tone and intensity for audiometry |
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Definition
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Term
| Up and down dropping for Audiometry |
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Definition
| If yes, drop 10dB, if no, raise 5dB; repeat 3 times. |
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Term
| Up and down dropping for Audiometry |
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Definition
| If yes, drop 10dB, if no, raise 5dB; repeat 3 times. |
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Term
| TRUE OR FALSE: if someone exhibits normal unmasked hearing, bone conduction testing is unnecessary. |
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Definition
| TRUE: b/c we know there is no problem in either pathway |
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Term
| Sloping audiogram indicitive of... |
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Definition
| SN Hearing loss: very common in old age and in noise exposure. Remember higher freqs are hit harder and over time more exposure to ototoxins, noise, traumas, etc. With rising audiogram hard to hear "thin, sin, shin, tin" |
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Term
| Rising audiogram indicative of... |
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Definition
| conductive hearing loss: usu. a result of stiff eardrum, and lower frequencies tend to bounce off ear drum, high ones pass on. |
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Term
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Definition
| Poor hearing sensitivity at 4k because of physics of ear. It's usu. exposure related and SN hearing loss. |
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Term
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Definition
| Poor hearing sensitivity at 4k because of physics of ear. It's usu. exposure related and SN hearing loss. |
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Term
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Definition
| Most typical in systematic hearing loss (due to drugs, lack of O2, noise exposure, etc) |
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Term
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Definition
| redflag for tumor, childhood mumps, or a result of an accident (explosion). |
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Term
| Where on cochlear are high frequencies processed |
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Definition
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Term
| Where on cochlea are low frequencies processed? |
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Definition
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Term
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Definition
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Term
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Definition
| Tympanometry is a measure of the stiffness of the eardrum and thus evaluate middle ear function. This test can be helpful in detecting fluid in the middle ear, negative middle ear pressure, disruption of the ossicles, tympanic membrane perforation, and otosclerosis. |
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Term
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Definition
| Normal. Peak is between -100 daPa and 50 daPa, static compliance is 1ml. |
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Term
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Definition
| think shallow: not much variation in compliance probably b/c of otosclerosis. (in example static compliance =.3ml) |
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Term
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Definition
| think deep in the y-value: much variation in compliance probably b/c of disarticulated ossicles (floppyness / hypermobility). (in example static compliance =3,0ml) Prob. an accident caused it. |
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Term
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Definition
| flat: probably an indication of ear infection, fluid in the ear, or an ear perforation. Change in pressure does not change the compliance b/c that shit is rigid and a bit of pressure change ain't going to change that. |
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Term
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Definition
| Shifted to the left and indicates negative pressure in the ear due to eustacian tube dysfunction. Usu. a transitioning result that shows looming infection (to a type B) or recovery from a B to an A. |
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