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Audiogram - Wikipedia
https://en.wikipedia.org/wiki/audiogram#:~:text=Otosclerosis%20results%20in%20an%20audiogram%20with%20significant%20loss,of%20either%20otosclerosis%20or%20a%20congenital%20ossicular%20anomaly.
Audiological Evaluation of the Patient with Otosclerosis ...
https://entokey.com/audiological-evaluation-of-the-patient-with-otosclerosis/
The primary acoustic consequence of otosclerosis in its early stages is the increase in the stiffness reactance component of the total middle ear impedance. This results in a reduction of transmission effectiveness for low frequencies, as seen in elevated thresholds.
Audiological evaluation of the patient with otosclerosis
https://drchrisdesouza.com/ENT-surgeon/audiological-investigation-of-otosclerosis.htm
The primary acoustic consequence of otosclerosis in its early stages is the increase in the stiffness reactance component of the total middle ear impedance. This results in a reduction of transmission effectiveness for low frequencies as seen in elevated thresholds. Another effect is that the resonant frequency of the middle ear is elevated.
What Is Otosclerosis? Symptoms & Diagnosis| NIDCD
https://www.nidcd.nih.gov/health/otosclerosis
Hearing loss, the most frequently reported symptom of otosclerosis, usually starts in one ear and then moves to the other. This loss may appear very gradually. Many people with otosclerosis first notice that they are unable to hear low-pitched sounds or can’t hear a whisper. Some people may also experience dizziness, balance problems, or tinnitus.
Otosclerosis: An update on diagnosis and treatment ...
https://journals.lww.com/jaapa/Fulltext/2017/02000/Otosclerosis__An_update_on_diagnosis_and_treatment.3.aspx
An audiogram that results in hearing thresholds greater than 25 dB is abnormal. Otosclerosis typically presents with low frequency conductive hearing loss ( Figure 1 ). 18 A loss of bone conduction at the frequency regions around 2,000 Hz (Carhart notch) historically has been considered an indicator of otosclerosis; however, recent research has found the Carhart notch …
Carhart notch and electric bone-conduction audiometry
https://pubmed.ncbi.nlm.nih.gov/8085115/
Twenty-nine consecutive patients with clinical otosclerosis were tested 2 weeks before and 7 months after stapes surgery with conventional air-conduction (AC) and bone-conduction (BC) audiometry and electric bone-conduction (EBC) audiometry using an Audimax 500 audiometer. The BC thresholds improved at 0.5-2.0 kHz corresponding to the Carhart notch.
Is the Carhart notch a predictive factor of hearing ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7982757/
Hearing results may differ according to the radiological otosclerosis classification 21. Marx et al. 21 reported according to CT-scan analyses that AC and BC thresholds were increased in cases of extensive otosclerosis: BC thresholds were significantly higher when the disease involved the pericochlea, the cochlear endosteum, or the round window. Furthermore, …
Abnormal Audiograms in Ear Pathology
https://entpa.org/resources/Pictures/2016%20ENT%20for%20the%20PA-C/Presentations/Abnormal%20audiograms%20in%20ear%20pathology%20-%20Klingenberg.pdf
– Describe the audiogram by configuration from least amount of hearing loss to the most (ex: mild to severe) – Pure tone average is 500 Hz, 1000 Hz, and 2000 Hz added and divided by 3. Degree of hearing loss Degree of hearing loss: • 0‐15 dB WNL • 16‐25 dB Slight • 26‐40 dB Mild
OTOSCLEROSIS: A Review for Audiologists Eric W. …
https://www.audiologyonline.com/articles/otosclerosis-a-review-for-audiologists-1226
The term cochlear otosclerosis is used to describe the sensorineural hearing loss seen in some patients with otosclerosis. This process can result in profound sensorineural hearing loss. Photo One shows the CT of a normal cochlea. Photo Two shows the temporal bone CT of a woman with bilateral profound sensorineural hearing loss due to otosclerosis.
The doubtful value of tympanometry in the diagnosis of ...
https://pubmed.ncbi.nlm.nih.gov/4009050/
Many consider that the compliance of the middle ear as measured from the tympanogram can be helpful in diagnosing otosclerosis. To test this assertion, the compliance in 34 individuals with surgically proven otosclerosis was compared with the compliance in 34 age and sex matched, normal controls, randomly selected from the population.
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