PANCE Blueprint EENT (7%)

Middle ear (PEARLS)

NCCPA™ PANCE EENT Content Blueprint ⇒ ear disorders ⇒ middle ear

Cholesteatoma
Patient will present as → a 43-year-old male with a “lifelong” history of chronic ear infections and episodic purulent drainage from his right ear canal. The patient is currently without symptoms. Examination of the ear shows a clear external canal, but the tympanic membrane is retracted, and there is a pocket of white material and an opacity of the pars flaccida. The Weber test lateralizes to the right, and Rinne shows air conduction > bone conduction on the left and bone conduction > air conduction on the right. Preparations are made to undergo a non-contrast computed tomography (CT) scan of the temporal bone.

Cholesteatoma is an abnormal growth of squamous epithelium in the middle ear or mastoid that can lead to destruction of nearby structures

  • Caused by chronic eustachian tube dysfunction, which results in chronic negative pressure and inverts part of the TM, causing granulation tissue that, over time, erodes the ossicles and leads to conductive hearing loss
  • Commonly presents with chronic ear infections and persistent otorrhea (ear discharge)
  • Hearing loss, typically conductive, due to ossicular chain destruction
  • Painless otorrhea that is often foul-smelling
  • May cause vertigo and facial nerve palsy if extensive

DX: Diagnosis can be made with otoscopic visualization revealing a retraction pocket or a mass of keratin debris

  • Confirm with CT scan and audiogram to evaluate hearing loss

TX: Surgical removal to prevent complications and restore hearing

  • Regular follow-up is essential to monitor for recurrence

Otitis media (ReelDx)
ReelDx Virtual Rounds (Otitis media)
Patient will present as → a 3-year-old previously healthy male is brought to your office by her mother. The mother reports the child has been crying and pulling at her right ear over the past 2 days and reports the patient has been febrile the past 24 hours. The patient’s past medical history is unremarkable, although the mother reports the patient had a “common cold” a week ago, which resolved without intervention. His temperature is 101.6 F, blood pressure is 100/70 mmHg, pulse is 120/min, and respirations are 22/min. The otoscopic exam is seen here.

The clinical diagnosis of AOM requires 1) bulging of the tympanic membrane or 2) other signs of acute inflammation (e.g., marked erythema of the tympanic membrane, fever, ear pain) and middle ear effusion

  • Age two and under limited mobility of the TM with pneumotoscopy
  • S. pneumoniae 25%, H. influenzae 20%, M. catarrhalis 10%
  • Tuning fork: bone conduction > air conduction
  • Acute: < 3 weeks -> Chronic: > 3 mo -> Recurrent: 3 episodes in 6 mo or 4 in 12 with clearing between

DX: Otoscopic examination may reveal bulging, loss of landmarks, redness, injection of TM, and pus.

  • A key finding is the limited mobility of the TM with pneumotoscopy
  • Building and eventual rupture of the TM can occur as well, leading to otorrhea and abruptly decreased pain

TX: First-line amoxicillin, second-line augmentin, macrolides if penicillin-allergic

  • Treat < 2 y for 10 days and > 2 y for 5-7 days
  • Recurrent: tympanostomy, tympanocentesis, myringotomy
  • Complications: Mastoiditis and bullous myringitis

Acute Otitis Media Stage of Resolution

Bulging, loss of landmarks, redness, and injection of TM, and pus

Otosclerosis
Patient will present as → a 35-year-old woman presents with a 2-year history of progressive hearing loss in both ears. She notes that her hearing is worse in noisy environments and denies any history of ear infections, trauma, or exposure to ototoxic medications. Her mother also experienced similar hearing loss in her 30s. On physical examination, the tympanic membranes appear normal bilaterally. An audiogram reveals conductive hearing loss with a Carhart notch at 2000 Hz. A CT scan is performed, demonstrating bony changes around the otic capsule, particularly near the stapes footplate.

Otosclerosis is a progressive disorder characterized by abnormal bone remodeling in the middle ear, leading to conductive hearing loss.

  • Commonly affects the stapes, causing fixation of the stapes footplate
  • Presents with gradual conductive hearing loss that typically begins in early to mid-adulthood
  • Tinnitus may be present
  • Normal tympanic membrane on otoscopic examination
  • Positive family history in some cases, suggesting a genetic component

DX: Diagnosed with audiometry, showing conductive hearing loss with a normal tympanogram. CT scan of the temporal bone may show bony changes

TX: Treatment options include hearing aids for amplification and surgical stapedectomy or stapedotomy to improve hearing

 

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Tympanic membrane perforation (ReelDx)
ReelDx Virtual Rounds (Tympanic membrane perforation)
Patient will present as → a 9-month-old female with nasal congestion and cough is brought to your clinic by her mother, who reports that the child is very fussy, has been tugging at her right ear, and refuses to eat. On physical exam, you note copious green/yellow nasal discharge and right-sided otorrhea. An otoscopic exam reveals a significant amount of clear/white discharge obstructing your view. With careful examination, you are able to observe a ruptured right tympanic membrane. 

Tympanic membrane perforation presents with pain, otorrhea, and hearing loss/reduction

Diagnosis is based on otoscopy

TX: Most heal spontaneously, keep clean and dry, treat with antibiotics

  • The only class of antibiotics that are non-ototoxic are the Floxin drops, which should be used if you are going to be prescribing drops with a perforated TM
  • Surgery if it persists past 2 months

Vertigo (ReelDx + Lecture) (Prev Lesson)
(Next Lesson) Cholesteatoma
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