Audiology and Speech Disorders Practice Questions

Q: Pure tone audiometry in presbycusis shows?

Sensorineural hearing loss. ***Sensorineural hearing loss*** - **Presbycusis** is age-related hearing loss that primarily affects the **inner ear**, specifically the cochlea and auditory nerve - Pure tone audiometry typically shows **bilateral, symmetrical high-frequency sensorineural hearing loss** that progresses over time - This is the characteristic audiometric pattern in presbycusis *Conductive hearing loss* - This type involves problems in the **outer or middle ear**, preventing sound from reaching the inner ear - Conditions like **otitis media** or **otosclerosis** cause conductive hearing loss - Not characteristic of presbycusis, which is an inner ear disorder *Normal study* - Would indicate no hearing impairment, inconsistent with the definition of **presbycusis** as age-related hearing loss - Presbycusis is a progressive condition with demonstrable hearing deficits on audiometry *Mixed hearing loss* - Involves components of both **conductive** and **sensorineural hearing loss** - While an older adult could have both types, the primary and defining characteristic of **presbycusis** is sensorineural damage, not mixed presentation

Q: Impedance audiometry is primarily used to assess?

Pressure changes in middle ear. ***Pressure changes in middle ear*** - Impedance audiometry, particularly **tympanometry**, directly assesses the **compliance and pressure of the middle ear**, making it ideal for detecting changes due to fluid or Eustachian tube dysfunction. - It works by varying air pressure in the ear canal and measuring how much sound energy is reflected from the tympanic membrane, providing a graph (tympanogram) indicative of middle ear status. *Meniere's disease* - This condition involves **endolymphatic hydrops** within the inner ear, leading to fluctuating hearing loss, tinnitus, vertigo, and aural fullness. - While an audiogram would show a **low-frequency sensorineural hearing loss**, impedance audiometry typically shows a **normal tympanogram** unless there is a co-existing middle ear pathology. *Cholesteatoma* - A cholesteatoma is a **destructive, expanding growth** in the middle ear or mastoid, often presenting with chronic ear discharge and conductive hearing loss. - While it can lead to ossicular chain disruption or perforation, the primary diagnostic tools are **otoscope examination** and **CT scan**, with impedance audiometry showing a type B or C tympanogram if there's a perforation or ossicular discontinuity, but not as the primary diagnostic for the growth itself. *Otomycosis* - This is a **fungal infection of the external ear canal**, causing itching, pain, and a feeling of fullness, often visible on otoscopic examination. - Impedance audiometry would typically yield a **normal tympanogram** in otomycosis, as the middle ear is unaffected.

Q: A child aged 3 yrs, presented with severe sensorineural deafness was prescribed hearing aids, but showed no improvement. What is the next line of management:

Cochlear implant. ***Cochlear implant*** - For **severe sensorineural deafness** where conventional hearing aids provide no benefit, a cochlear implant is the most effective next step for restoring hearing. - A cochlear implant directly stimulates the **auditory nerve**, bypassing damaged hair cells in the cochlea, which is crucial for severe sensorineural hearing loss. - In children aged **12 months to 5 years**, early cochlear implantation is critical for optimal **speech and language development**. *Conservative* - This typically refers to observation or non-invasive treatments like hearing aids, which have already failed in this case. - Continuing a conservative approach would delay effective intervention for severe deafness, potentially impacting the child's **speech and language development**. *Fenestration surgery* - This is a surgical procedure primarily used for some types of **conductive hearing loss**, especially **otosclerosis**, by creating an opening in the bony labyrinth. - It is not indicated for **sensorineural deafness**, as the problem lies with the inner ear or auditory nerve, not the sound conduction pathway. *Stapes mobilisation* - This procedure aims to restore mobility to the **stapes bone** in cases of **otosclerosis**, a form of conductive hearing loss where the stapes becomes fixed. - It is not appropriate for **sensorineural hearing loss**, where the primary issue is damage to the inner ear's sensory cells or the auditory nerve.

Q: High-frequency audiometry is used in

Ototoxicity. ***Ototoxicity*** - **High-frequency audiometry** is particularly sensitive to early detection of **ototoxicity** because many ototoxic drugs, such as aminoglycoside antibiotics and chemotherapeutic agents, damage the **outer hair cells** in the basal turn of the cochlea, which are responsible for high-frequency hearing. - This specialized audiometry can detect cochlear damage at frequencies above the conventional audiometric range (typically 8000 Hz), allowing for intervention before significant hearing loss occurs in the conventional frequency range. - Early detection enables dose modification or drug discontinuation to prevent irreversible hearing damage. *Otosclerosis* - Otosclerosis primarily involves **conductive hearing loss** due to fixation of the stapes, which is best evaluated by conventional audiometry showing an **air-bone gap** and often a **Carhart notch** around 2000 Hz. - While it can sometimes have sensorineural components, high-frequency audiometry is not its primary diagnostic tool. *Non-organic hearing loss* - **Non-organic hearing loss** (or functional hearing loss) refers to hearing loss that is not due to organic pathology and is often identified by inconsistencies in conventional audiometric tests, such as discrepancies between pure-tone thresholds and speech reception thresholds, or inconsistent responses during repeated testing. - High-frequency audiometry has no specific role in diagnosing this condition. *Meniere disease* - Meniere's disease is characterized by fluctuating **sensorineural hearing loss**, vertigo, tinnitus, and aural fullness, typically affecting the **lower frequencies** initially. - High-frequency audiometry is not routinely used for its diagnosis, as the characteristic hearing loss pattern is usually observed in the low to mid-frequency range.

Q: Tone decay test is done for:

Neural deafness. ***Neural deafness*** - The **tone decay test** measures the ability to sustain the perception of a continuous tone; significant decay indicates **retrocochlear pathology**, which is characteristic of neural deafness. - This test helps differentiate between cochlear and retrocochlear lesions by assessing the auditory nerve's ability to maintain a neural response. *Cochlear deafness* - While patients with **cochlear deafness** may experience some tone decay, it is typically less pronounced than in neural deafness. - **Cochlear pathologies** primarily affect the hair cells, leading to issues with sound perception and clarity rather than rapid decay of tone perception. *Otosclerosis* - **Otosclerosis** is a condition of the **middle ear** that causes **conductive hearing loss** due to the abnormal growth of bone. - It does not primarily affect the neural pathways or the inner ear's ability to sustain tones, so the tone decay test is not the primary diagnostic tool. *Middle ear problem* - **Middle ear problems** generally result in **conductive hearing loss** as they impede the transmission of sound to the inner ear. - The tone decay test is designed to evaluate issues within the inner ear and auditory nerve, not conductive pathologies.

Q: C-shaped curve on tympanometry is seen in?

Eustachian tube obstruction. ***Eustachian tube obstruction*** - A **C-shaped curve** (Type C tympanogram) indicates **negative middle ear pressure**, which results from a poorly functioning **Eustachian tube**. - This type of curve shows maximal compliance at a **negative pressure**, signifying that the middle ear is under suction. *Serous otitis media* - **Serous otitis media** (otitis media with effusion) typically presents with a **Type B tympanogram**, indicating **reduced or absent tympanic membrane mobility** due to fluid in the middle ear. - This is a flat curve with no distinct peak, reflecting the presence of **effusion**. *Otosclerosis* - **Otosclerosis** causes **stiffening of the ossicular chain**, particularly the stapes, leading to a **Type As tympanogram**. - This curve shows **normal middle ear pressure** but **reduced compliance** (shallower peak) compared to a normal Type A. *TM perforation* - A **tympanic membrane perforation** results in an **open middle ear space**, leading to an **extremely high compliance** and **no discernible peak** on the tympanogram (Type B with a large ear canal volume). - This is because the pressure applied by the tympanometer escapes through the perforation, failing to pressurize the system.

Q: Acoustic dip occurs at:

4000 Hz. ***4000 Hz*** - An **acoustic dip or notch** in an audiogram is a characteristic finding in **noise-induced hearing loss**. - This dip typically occurs at **4000 Hz**, indicating damage to the **cochlear hair cells** most sensitive to this frequency. *1500 Hz* - Hearing loss at **1500 Hz** is not a classic presentation of the acoustic dip associated with noise exposure. - While other forms of hearing loss can affect this frequency, it's not the primary frequency for noise-induced damage. *2000 Hz* - Although hearing loss can extend to other frequencies in noise-induced hearing loss, the **initial and most pronounced dip** is typically observed at 4000 Hz, not 2000 Hz. - A dip at **2000 Hz** would be less specific for noise trauma and might suggest other etiologies. *500 Hz* - **Low frequencies (like 500 Hz)** are generally less affected in the early stages of noise-induced hearing loss. - Hearing loss at these frequencies is more commonly associated with **conductive hearing loss** or other types of sensorineural hearing loss.

Q: Rinne test is:

A tuning fork test for hearing assessment. ***A tuning fork test for hearing assessment*** - The **Rinne test** is a well-established otological examination that uses a **tuning fork** (typically 512 Hz) to compare **air conduction (AC)** and **bone conduction (BC)** hearing. - Normal result shows **air conduction > bone conduction** (positive Rinne test), while **conductive hearing loss** shows bone conduction > air conduction (negative Rinne test). *Not a recognized medical term* - This is completely false. The **Rinne test** is a widely recognized and standard medical diagnostic test in **otolaryngology** and **audiology**. - It has been used clinically for over a century and is taught in medical schools worldwide, named after **Heinrich Adolf Rinne**, a German otologist who described it in 1855. *A clinical examination technique for tympanic membrane* - While the Rinne test is part of ear examination, it does not directly examine the **tympanic membrane**. - The test assesses **hearing pathways** rather than directly visualizing or examining the tympanic membrane structure; direct examination is done through **otoscopy**. *A type of audiometry test* - **Audiometry** refers to formal, quantitative hearing tests using specialized electronic equipment that produce **audiograms** with detailed hearing threshold measurements. - The Rinne test is a simple, qualitative **bedside test** using a tuning fork that provides a quick comparison between air and bone conduction, but does not produce numerical thresholds or detailed audiometric data.

Q: Which of the following interventions is least appropriate for an 8-year-old boy with bilateral sensorineural hearing loss?

Adenoidectomy with grommet insertion. ***Adenoidectomy with grommet insertion*** - This procedure addresses **conductive hearing loss** (e.g., due to **otitis media with effusion**), while the boy has **sensorineural hearing loss (SNHL)**. - **Grommet insertion** (tympanostomy tubes) is used to improve middle ear ventilation and drain fluid, which is irrelevant for SNHL. *Hearing aid* - A **hearing aid** amplifies sound and is a common and appropriate intervention for **sensorineural hearing loss**, especially for mild to severe cases. - It can significantly improve a child's ability to hear and develop speech. *Cochlear implant* - A **cochlear implant** is appropriate for children with **severe to profound sensorineural hearing loss** who do not benefit sufficiently from hearing aids. - It directly stimulates the auditory nerve, bypassing damaged parts of the inner ear. *Preferential sitting in the classroom* - This is a simple and effective **accommodative strategy** to improve a child's listening environment and is appropriate for any degree of hearing loss. - It helps the child to better hear the teacher and participate in classroom discussions.

Q: A 60-year-old patient with profound sensorineural hearing loss is being evaluated for cochlear implantation. What is the impact of preoperative auditory brainstem response on the surgery?

Confirms functional auditory nerve.. ***Confirms functional auditory nerve*** - A positive **auditory brainstem response (ABR)** indicates that the **auditory nerve** is intact and capable of transmitting signals, a prerequisite for successful cochlear implantation. - While cochlear implants bypass damaged hair cells, a **functional auditory nerve** is essential for relaying electrical signals to the brain. *Not necessary as CI can function without nerve input.* - **Cochlear implants** directly stimulate the **auditory nerve**, so **nerve integrity** is crucial for the device to effectively transmit sound information to the brain. - Without a functional nerve, the electrical signals generated by the implant cannot be processed, rendering the device ineffective. *Only relevant in cases of mixed hearing loss.* - **Preoperative ABR** is critical for all profound **sensorineural hearing loss** cases being considered for cochlear implantation to assess the status of the **auditory nerve**. - Its utility is not limited to **mixed hearing loss**, as the primary concern for CI candidacy is the integrity of the **neuronal pathway**. *Only for patients with suspected neural loss.* - **ABR testing** is a standard component of evaluation for **cochlear implant candidates**, regardless of whether **neural loss** is specifically "suspected" based on other findings. - It provides objective data on the **auditory nerve's function**, which is distinct from the **cochlear (sensory) component** of hearing.

Question 1

Pure tone audiometry in presbycusis shows?

Accepted Answer

Sensorineural hearing loss

Answer

Conductive hearing loss

Answer

Normal study

Answer

Mixed hearing loss

Question 2

Impedance audiometry is primarily used to assess?

Accepted Answer

Pressure changes in middle ear

Answer

Meniere's disease

Answer

Cholesteatoma

Answer

Otomycosis

Question 3

A child aged 3 yrs, presented with severe sensorineural deafness was prescribed hearing aids, but showed no improvement. What is the next line of management:

Accepted Answer

Cochlear implant

Answer

Conservative

Answer

Fenestration surgery

Answer

Stapes mobilisation

Question 4

High-frequency audiometry is used in

Accepted Answer

Ototoxicity

Answer

Otosclerosis

Answer

Non-organic hearing loss

Answer

Meniere disease

Question 5

Tone decay test is done for:

Accepted Answer

Neural deafness

Answer

Cochlear deafness

Answer

Otosclerosis

Answer

Middle ear problem

Question 6

C-shaped curve on tympanometry is seen in?

Accepted Answer

Eustachian tube obstruction

Answer

Serous otitis media

Answer

Otosclerosis

Answer

TM perforation

Question 7

Acoustic dip occurs at:

Accepted Answer

4000 Hz

Answer

1500 Hz

Answer

2000 Hz

Answer

500 Hz

Question 8

Rinne test is:

Accepted Answer

A tuning fork test for hearing assessment

Answer

A clinical examination technique for tympanic membrane

Answer

A type of audiometry test

Answer

Not a recognized medical term

Question 9

Which of the following interventions is least appropriate for an 8-year-old boy with bilateral sensorineural hearing loss?

Accepted Answer

Adenoidectomy with grommet insertion

Answer

Hearing aid

Answer

Cochlear implant

Answer

Preferential sitting in the classroom

Question 10

A 60-year-old patient with profound sensorineural hearing loss is being evaluated for cochlear implantation. What is the impact of preoperative auditory brainstem response on the surgery?

Accepted Answer

Confirms functional auditory nerve.

Answer

Not necessary as CI can function without nerve input.

Answer

Only relevant in cases of mixed hearing loss.

Answer

Only for patients with suspected neural loss.

Audiology and Speech Disorders — MCQs

Audiology and Speech Disorders — MCQs

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