Diseases of the Ear Practice Questions

Q: Which of the following is a common complication of chronic suppurative otitis media?

Hearing loss. ***Hearing loss*** - Chronic suppurative otitis media (CSOM) most commonly leads to **conductive hearing loss** due to tympanic membrane perforation, ossicular chain erosion, or cholesteatoma formation. - **Sensorineural hearing loss** can occur with labyrinthine involvement or through toxic effects on the inner ear. - This is the **most frequent complication** of CSOM, occurring in the majority of cases. *Facial nerve palsy* - This is a **rare but serious** intratemporal complication of CSOM, occurring in less than 1% of cases. - Usually results from direct erosion of the fallopian canal by **cholesteatoma** or from severe infection. - Requires urgent surgical intervention when it occurs. *Meningitis* - This is an **uncommon intracranial complication** that occurs when infection spreads through bone erosion or via preformed pathways. - Other intracranial complications include brain abscess, lateral sinus thrombosis, and extradural abscess. - These are considered serious but rare complications requiring immediate treatment. *Mastoiditis* - **Chronic mastoiditis** is indeed a common complication of CSOM, occurring when infection involves the mastoid air cell system. - However, **hearing loss** remains more universally present and is therefore considered the most common complication. - Mastoiditis in CSOM often manifests as coalescent mastoiditis with bone destruction.

Q: In the context of acute otitis media, Weber's test will be:

Lateralized to the affected ear. ***Lateralized to the affected ear*** - **Weber's test** is used to detect **unilateral conductive or sensorineural hearing loss**. In acute otitis media, there is often fluid in the middle ear space, leading to **conductive hearing loss**. - With **conductive hearing loss**, bone conduction is perceived as louder in the affected ear because the masking effect of ambient noise transmitted via air conduction is reduced, causing the sound to be **lateralized to the affected (poorer) ear**. - This occurs because the affected ear with middle ear fluid has reduced air conduction, making the bone-conducted sound relatively more prominent in that ear. *Not lateralized* - This would imply either **no hearing loss** or **symmetrical hearing loss** (either conductive or sensorineural), which is not typical for unilateral acute otitis media. - A lack of lateralization suggests the sound is perceived equally in both ears, which is not the expected finding when one ear has significant middle ear pathology. *Lateralized to the better ear* - Lateralization to the **better ear** typically indicates **sensorineural hearing loss** in the poorer ear. - Acute otitis media primarily causes **conductive hearing loss** due to fluid accumulation in the middle ear, not sensorineural pathology. *Inconclusive* - Weber's test is generally a **reliable and conclusive test** for differentiating between unilateral conductive and sensorineural hearing loss. - If performed correctly, it should yield a clear lateralization or lack thereof, providing valuable diagnostic information in acute otitis media.

Q: A 55-year-old female presents with progressive hearing loss. Audiometry reveals conductive hearing loss, and a CT scan shows ossification of the stapes. What is the most likely diagnosis?

Otosclerosis. ***Otosclerosis*** - **Otosclerosis** is characterized by abnormal bone remodeling in the **otic capsule**, leading to **stapes fixation** and conductive hearing loss. - The CT scan finding of **ossification of the stapes** is pathognomonic for otosclerosis. *Chronic suppurative otitis media* - This condition involves **persistent infection and inflammation** of the middle ear, often with a **perforated tympanic membrane** and discharge. - While it can cause conductive hearing loss due to ossicular destruction or tympanic membrane perforation, it does not typically present with isolated **stapes ossification**. *Serous otitis media* - **Serous otitis media** is characterized by the presence of **fluid in the middle ear space** without signs of acute infection, commonly causing conductive hearing loss. - It does not involve **ossification of the stapes** or other bone remodeling processes like otosclerosis. *Acoustic neuroma* - An **acoustic neuroma** is a benign tumor of the **vestibulocochlear nerve** (cranial nerve VIII), typically causing **sensorineural hearing loss**, tinnitus, and balance issues. - It does not cause conductive hearing loss or ossification of the stapes; rather, it originates from the nerve itself.

Q: A child with a history of recurrent otitis media presents with fever, ear pain, and a protruding auricle. What is the most likely diagnosis?

Acute mastoiditis. ***Acute mastoiditis*** * The child's history of **recurrent otitis media**, coupled with **fever**, **ear pain**, and a **protruding auricle**, is highly suggestive of acute mastoiditis. * **Mastoiditis** is an infection of the **mastoid air cells** that typically arises as a complication of **untreated or recurrent acute otitis media**; the protruding auricle is due to inflammation and edema pushing the pinna outward. *Otitis externa* * **Otitis externa** primarily affects the **ear canal**, causing pain, discharge, and itching, but typically does not involve a **protruding auricle**. * It is less likely to present with significant **fever** unless there is extensive cellulitis or a severe underlying condition. *Cholesteatoma* * A **cholesteatoma** is an abnormal, non-cancerous skin growth in the middle ear, which can cause **hearing loss** and **chronic ear discharge**, but it does not typically cause acute fever or a protruding auricle as an initial presentation. * It is usually a chronic condition and its acute complications, such as an **abscess**, would be needed to explain the protruding auricle and fever. *Otitis media with effusion* * **Otitis media with effusion** involves fluid in the middle ear without signs of acute infection, leading to **hearing loss** but not usually associated with pain, fever, or a **protruding auricle**. * This condition is typically **painless** and afebrile, differentiating it from the child's acute symptoms.

Q: Which of the following is the treatment of choice for a patient with recurrent cholesteatoma?

Surgical excision. ***Surgical excision*** - **Surgical excision** is the definitive treatment for **cholesteatoma**, especially in cases of recurrence, to completely remove the abnormal growth and prevent complications. - The goal is to eradicate the disease, preserve or improve hearing, and prevent further bone erosion or intracranial spread. *Antibiotics* - **Antibiotics** are typically used to treat associated **bacterial infections** or **otitis media**, but they do not resolve the underlying cholesteatoma. - **Cholesteatoma** is an epithelial growth, not primarily an infection, so antibiotics alone are insufficient. *Corticosteroids* - **Corticosteroids** may be used to reduce **inflammation** or swelling associated with cholesteatoma but do not remove the epithelial mass itself. - They are adjunctive therapies and not the primary treatment for the surgical nature of cholesteatoma. *Radiotherapy* - **Radiotherapy** is generally not indicated for **cholesteatoma** as it is a benign, non-malignant condition that requires physical removal. - The risks associated with radiation exposure outweigh any potential benefits in treating this specific condition.

Q: Which of the following statements is true about otosclerosis?

More common in females than in males.. ***More common in females than in males.*** - **Otosclerosis** is observed more frequently in females, with a female-to-male ratio of approximately **2:1**, and it often worsens during **pregnancy**. - This higher prevalence in women suggests a potential influence of **hormonal factors** on disease progression. *More common in African descendants than in Caucasians.* - This is **incorrect**. Otosclerosis shows a clear **racial predilection**, being significantly more common in **Caucasian populations** compared to African, Asian, or Native American populations. - The prevalence is highest in White populations (especially of European descent) and lowest in African and Asian populations. *Approximately 60-70% have a family history.* - While otosclerosis does have a **genetic component** and a significant percentage of patients have a positive family history, the reported figures are closer to **50%**, making 60-70% an overestimation. - Familial otosclerosis suggests an **autosomal dominant inheritance pattern** with incomplete penetrance. *Primarily affects the inner ear structures.* - Otosclerosis is primarily a disease of the **middle ear**, specifically involving the ossicles and the **stapes footplate**, leading to progressive **conductive hearing loss**. - Although it can rarely extend to the inner ear (cochlear otosclerosis), the primary pathology is in the **bony labyrinth** affecting the stapes at the oval window.

Q: A 50-year-old male presents with persistent ear discharge and hearing loss. Otoscopic examination reveals a perforation in the pars tensa. What is the most likely diagnosis?

Chronic suppurative otitis media. ***Chronic suppurative otitis media*** - This condition is characterized by **persistent ear discharge** (otorrhea) and **hearing loss** for more than 6-12 weeks, with a **permanent perforation of the tympanic membrane**. - The presence of a **perforation in the pars tensa** (the larger portion of the tympanic membrane) is the hallmark finding in CSOM, allowing ongoing infection and drainage. - Represents the most common cause of chronic ear discharge with conductive hearing loss in adults. *Acute otitis media* - This is an **acute infection** of the middle ear, typically resolving within a few weeks and often accompanied by **severe otalgia and fever**. - While perforation can occur, the discharge is **acute and self-limiting**, not persistent, and typically heals spontaneously. - The chronic, persistent nature of symptoms in this case rules out acute otitis media. *Otosclerosis* - Otosclerosis is a disease of the **otic capsule** causing **progressive conductive hearing loss** due to **stapes fixation**. - Presents with hearing loss **without ear discharge or tympanic membrane perforation**. - The tympanic membrane appears **normal** on otoscopy, which clearly differs from this presentation. *Serous otitis media* - Also called **otitis media with effusion**, characterized by **sterile fluid in the middle ear without signs of acute infection**. - Typically presents with a **retracted, amber-colored tympanic membrane** and **absence of discharge or perforation**. - No ear discharge is present, making this diagnosis inconsistent with the clinical picture.

Q: A child with acute otitis media who fails initial antibiotic therapy, what is the next step in management?

Switch to a broader spectrum antibiotic. ***Switch to a broader spectrum antibiotic*** - Failure of initial antibiotic therapy for **acute otitis media** suggests that the causative pathogen may be resistant to the initial drug or is a different organism requiring broader coverage. - Switching to an antibiotic with a **wider spectrum of activity** or one known to be effective against common resistant strains (e.g., high-dose amoxicillin-clavulanate) is generally the next appropriate step. *Repeat the initial antibiotic* - Repeating the same antibiotic without clinical improvement is unlikely to be effective, as it implies the initial drug failed to eradicate the infection, possibly due to **resistance** or an **incorrect diagnosis**. - This approach delays appropriate treatment and may contribute to **antibiotic resistance**. *Add a second antibiotic to the regimen* - While combination therapy is sometimes used for severe infections, simply adding a second antibiotic without considering the spectrum of the initial drug or the most likely resistant pathogens is not typically the first empirical step. - It increases the risk of side effects and can lead to unnecessary **polypharmacy**. *Schedule for myringotomy* - Myringotomy, with or without tympanostomy tube placement, is typically reserved for **recurrent acute otitis media**, persistent middle ear effusion, or complications, not immediately after the failure of an initial antibiotic course. - It is an invasive procedure and should only be considered after medical management options have been exhausted or if there are specific indications such as severe pain or complications (e.g., mastoiditis).

Question 1

Which of the following is a common complication of chronic suppurative otitis media?

Accepted Answer

Hearing loss

Answer

Meningitis

Answer

Facial nerve palsy

Answer

Mastoiditis

Question 2

A tympanogram reveals a Type B curve in a patient with a history of recurrent otitis media. What does this finding indicate, and what is the appropriate management?

Accepted Answer

Indicates middle ear effusion; consider myringotomy with tube placement

Answer

Indicates Eustachian tube dysfunction; prescribe decongestants

Answer

Indicates ossicular chain discontinuity; refer for surgical consultation

Answer

Indicates normal middle ear function; no treatment needed

Question 3

In the context of acute otitis media, Weber's test will be:

Accepted Answer

Lateralized to the affected ear

Answer

Not lateralized

Answer

Lateralized to the better ear

Answer

Inconclusive

Question 4

A 2-year-old male with recurrent otitis media presents for the fourth episode this year. There is no hearing loss. On physical examination, the tympanic membrane is erythematous and bulging, with no perforation. The middle ear effusion persists after antibiotic treatment. Analyze the situation and recommend the next step.

Accepted Answer

Tympanostomy tube insertion

Answer

Watchful waiting for 3 months

Answer

Corticosteroid ear drops

Answer

Switch to broad-spectrum antibiotics

Question 5

A 55-year-old female presents with progressive hearing loss. Audiometry reveals conductive hearing loss, and a CT scan shows ossification of the stapes. What is the most likely diagnosis?

Accepted Answer

Otosclerosis

Answer

Chronic suppurative otitis media

Answer

Serous otitis media

Answer

Acoustic neuroma

Question 6

A child with a history of recurrent otitis media presents with fever, ear pain, and a protruding auricle. What is the most likely diagnosis?

Accepted Answer

Acute mastoiditis

Answer

Otitis externa

Answer

Cholesteatoma

Answer

Otitis media with effusion

Question 7

Which of the following is the treatment of choice for a patient with recurrent cholesteatoma?

Accepted Answer

Surgical excision

Answer

Antibiotics

Answer

Corticosteroids

Answer

Radiotherapy

Question 8

Which of the following statements is true about otosclerosis?

Accepted Answer

More common in females than in males.

Answer

Primarily affects the inner ear structures.

Answer

Approximately 60-70% have a family history.

Answer

More common in African descendants than in Caucasians.

Question 9

A 50-year-old male presents with persistent ear discharge and hearing loss. Otoscopic examination reveals a perforation in the pars tensa. What is the most likely diagnosis?

Accepted Answer

Chronic suppurative otitis media

Answer

Acute otitis media

Answer

Otosclerosis

Answer

Serous otitis media

Question 10

A child with acute otitis media who fails initial antibiotic therapy, what is the next step in management?

Accepted Answer

Switch to a broader spectrum antibiotic

Answer

Repeat the initial antibiotic

Answer

Add a second antibiotic to the regimen

Answer

Schedule for myringotomy

Diseases of the Ear — MCQs

Diseases of the Ear — MCQs

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