FNP Otitis Media Practice Questions

In infants and children under three years of age, the external auditory canal curves upward. To straighten the canal for optimal visualization of the tympanic membrane, the examiner must pull the pinna downward and backward. Pulling the pinna upward and backward is the correct technique for older children and adults, making that option incorrect for a 6-month-old infant. Pulling outward or forward will not align the cartilaginous canal with the bony canal, obscuring the necessary landmarks for diagnosing acute otitis media.

A bulging tympanic membrane is the hallmark sign of acute otitis media and differentiates it from otitis media with effusion. While an air-fluid level or retracted contour indicates fluid in the middle ear space, these are classic for otitis media with effusion rather than the acute inflammatory pressure seen in an active infection. Isolated erythema is often caused by crying or fever and is not diagnostic of acute otitis media without structural changes. Therefore, recognizing the outward contour shift is essential for accurate diagnosis.

A pleural effusion measuring greater than 10 mm on a lateral decubitus film in a patient failing to improve on appropriate antibiotics suggests a complex parapneumonic effusion or empyema. The standard of care requires referring the patient for a diagnostic thoracentesis to evaluate the pleural fluid for infection, pH, and glucose. Identifying a simple parapneumonic effusion and merely switching to oral levofloxacin is inadequate because infected pleural fluid must be drained for clinical resolution. Continuing the current antibiotics ignores the objective radiographic progression and ongoing fever. While a computed tomography scan can provide more detail, identifying an evolving pulmonary abscess is incorrect because the imaging specifically describes a free-flowing pleural effusion, not a cavitary parenchymal lesion.

An opaque tympanic membrane with obscured bony landmarks and an absent light reflex indicates the accumulation of purulent exudate in the middle ear space, a hallmark of acute otitis media. Negative pressure typically causes a retracted membrane where bony landmarks become more prominent, not obscured. Scarring appears as bright white plaques but does not typically obscure the entire membrane or cause acute fever. Viral inflammation of the external canal describes otitis externa, which affects the canal walls rather than causing middle ear opacity.

The Weber test lateralizing to the left and an abnormal Rinne test on the left confirm a left conductive hearing loss. Given the normal otoscopic exam and gradual onset, otosclerosis is the primary differential diagnosis. Option B is incorrect because presbycusis causes sensorineural loss, which would lateralize to the right and have a normal Rinne. Option C is incorrect because the findings localize the deficit to the left ear. Option D is incorrect because the testing confirms a conductive, not sensorineural, pathology on the left side.

The patient exhibits left sensorineural hearing loss, indicated by the Weber test lateralizing to the unaffected right ear while the Rinne test remains normal bilaterally. Unilateral sensorineural loss in an older adult is a red flag for retrocochlear lesions like an acoustic neuroma, necessitating MRI evaluation. Option A is incorrect because chronic otitis media causes conductive loss, which would lateralize to the left. Option C is incorrect because the hearing loss is reported in the left ear, not the right. Option D is incorrect because the Rinne test rules out a conductive hearing loss.

The ATS/IDSA guidelines recommend high-dose amoxicillin or doxycycline for healthy adults without comorbidities. Macrolides like azithromycin are contraindicated here because local macrolide resistance exceeds 25%. Respiratory fluoroquinolones like levofloxacin and cephalosporins like cefpodoxime are inappropriately broad for this patient and should be reserved for individuals with significant medical comorbidities or specific risk factors.

Patients with community-acquired pneumonia should demonstrate clinical improvement within 48 to 72 hours of starting empiric antibiotic therapy. When a patient presents with worsening dyspnea and a high fever after four days of treatment, this indicates clinical failure or the development of a complication, such as a parapneumonic effusion or empyema. This patient requires urgent evaluation, including laboratory testing and chest imaging, which is best facilitated in the emergency department. Adding amoxicillin-clavulanate or switching to levofloxacin in the outpatient setting is unsafe without first identifying the cause of the deterioration. Prescribing an oral corticosteroid might temporarily mask the fever but fails to address the underlying uncontrolled infection or potential structural complication, placing the patient at significant risk for further decompensation.

Current pediatric guidelines support watchful waiting for 48 to 72 hours in children 24 months of age and older who present with mild, unilateral acute otitis media and a temperature below 102.2°F, provided the caregivers are reliable and follow-up is assured. High-dose amoxicillin would be the first-line antibiotic if the child had severe symptoms, bilateral disease, or was under 6 months of age. Standard-dose amoxicillin is no longer recommended due to resistant pneumococcal strains. Amoxicillin-clavulanate is reserved for cases involving recent amoxicillin use, concurrent purulent conjunctivitis, or treatment failure. Offering pain management and observing safely minimizes unnecessary antibiotic exposure.

This patient exhibits classic signs of acute bacterial rhinosinusitis requiring antibiotic therapy. Because he has a type 1 penicillin allergy, amoxicillin-clavulanate is contraindicated. Doxycycline is the preferred alternative as it effectively covers the most common bacterial pathogens, including Streptococcus pneumoniae and Haemophilus influenzae. Azithromycin is not recommended due to high resistance rates among pneumococcal strains. Cephalexin carries a cross-reactivity risk in patients with true anaphylaxis to penicillin and lacks adequate coverage for H. influenzae. Clindamycin is a poor choice because it does not reliably cover H. influenzae, a primary pathogen in adult rhinosinusitis.

Hearing loss in older adults is frequently misdiagnosed as cognitive decline or dementia because patients may withdraw socially and fail to respond appropriately to questions. Before initiating an extensive dementia workup, you must rule out sensory deficits. Referring the patient for a comprehensive hearing evaluation is the most appropriate first step to determine if presbycusis is the primary cause of her symptoms. Initiating a trial of donepezil is inappropriate without a confirmed diagnosis of Alzheimer disease and without first addressing the obvious communication barrier. Ordering a brain magnetic resonance imaging scan is premature and not indicated as the initial step for these symptoms. Referring to a neurologist for advanced cognitive testing should only occur after ensuring the patient has adequate sensory function to participate meaningfully in the assessments.

A distinct pop in her knee followed by immediate, massive joint swelling (hemarthrosis) in a pivoting athlete is the classic presentation of an anterior cruciate ligament complete tear. The positive Lachman test further confirms excessive anterior translation of the tibia, solidifying this diagnosis. Option A is incorrect because a medial collateral ligament sprain typically presents with medial joint pain and laxity with valgus stress, without massive immediate effusion. Option B is incorrect because while a lateral meniscus tear can occur from pivoting, it usually presents with delayed swelling over twenty-four hours and positive joint line tenderness. Option C is incorrect because a patellar tendon rupture would present with an inability to actively extend the knee and a visibly high-riding patella, rather than an isolated positive Lachman test and immediate hemarthrosis.

A Type C tympanogram indicates negative middle ear pressure, which is a very common finding as otitis media with effusion gradually resolves and the Eustachian tube begins to function normally again. Because this infant is asymptomatic, meeting milestones, and still within the three-month window, continued observation is the safest and most appropriate plan. Option B is incorrect because decongestants have no proven efficacy in resolving middle ear fluid. Options C and D are premature; surgical referral and comprehensive developmental evaluations are not indicated unless the effusion persists beyond three months or the child begins showing signs of hearing loss or speech delay.

A pearly white opaque mass located in the superior pars flaccida region is highly suspicious for a suspected acquired cholesteatoma. This requires prompt referral to otolaryngology to prevent bone destruction and hearing loss. Benign tympanosclerosis scarring tissue plaque formation appears as bright white flat plaques on the pars tensa rather than a three-dimensional mass in the pars flaccida. Unresolved acute bacterial otitis media infection presents with diffuse bulging and purulence rather than a discrete pearly mass. Retained organic foreign body canal impaction occurs in the external auditory canal rather than within the tympanic membrane structure itself.

Mycoplasma pneumoniae often presents with diffuse, patchy interstitial infiltrates on a chest radiograph, which frequently look much worse than the patient's mild clinical presentation. Option A is incorrect because Streptococcus pneumoniae typically causes a dense, focal lobar consolidation. Option C is incorrect because Klebsiella typically causes upper lobe consolidation with a bulging fissure, often in patients with alcoholism. Option D is incorrect because Staphylococcus aureus often causes severe, rapidly progressive pneumonia with cavitation or pneumatoceles.