Ears to Looking at You, Kid (or A Temporal Sanity)
A diabetic patient presents with severe otalgia out of proportion to exam and granulation tissue at the bony-cartilaginous junction of the external auditory canal. What is the most likely diagnosis and first-line IV antibiotic?
Malignant (Necrotizing) Otitis Externa; Ciprofloxacin 400 mg IV q8h (covering Pseudomonas aeruginosa).
Anteroinferior nasal septal bleeding originates from Kiesselbach's plexus, which is formed by the confluence of which three primary arterial branches?
Superior labial artery, anterior ethmoidal artery, and sphenopalatine artery.
What physical exam finding on anterior rhinoscopy after nasal trauma requires urgent surgical incision and drainage to prevent saddle-nose deformity?
Nasal septal hematoma (bluish/purple fluctuant mass on the septum).
According to clinical guidelines, what is the minimum duration of continuous symptoms required before establishing a clinical diagnosis of Acute Bacterial Rhinosinusitis (ABRS) over a viral URI?
10 days or more (or "double sickening" / severe symptoms for 3-4 consecutive days).
A button battery impacted in the nasal cavity or external auditory canal constitutes a surgical emergency due to what specific tissue destruction mechanism?
Liquefaction necrosis (and electrical/alkaline tissue perforation).
An isolated occlusion of this artery causes acute vestibular syndrome (vertigo and nystagmus) without associated sensorineural hearing loss.
Anterior vestibular artery (branch of the internal auditory / common cochlear artery).
What is the primary arterial origin for posterior epistaxis, and from which major vascular system does it derive?
Sphenopalatine artery; External carotid artery system (via the internal maxillary artery).
Within what specific timeframe post-injury should an elective closed reduction of a displaced nasal fracture be performed if soft tissue edema prevents immediate reduction in the ED?
Within 6 to 10 days (before fibrous consolidation occurs).
What key clinical exam features distinguish orbital cellulitis from preseptal (periorbital) cellulitis?
Proptosis, painful or restricted extraocular eye movements, chemosis, or decreased visual acuity.
What topical agent should be instilled into the external auditory canal prior to removing a live insect to paralyze the organism and provide local anesthesia?
2% Lidocaine solution.
What is the recommended first-line medical therapy and timeframe for idiopathic sudden sensorineural hearing loss (SSNHL)?
Prednisone 60 mg PO daily for 7 to 14 days, with otolaryngology follow-up within 2 weeks.
When applying chemical cautery with silver nitrate for anterior epistaxis, why must bilateral septal cauterization never be performed during the same session?
Risk of nasal septal perforation due to bilateral mucosal/cartilaginous ischemia.
Clear, watery nasal discharge following facial trauma can be tested for this specific protein to confirm a cerebrospinal fluid (CSF) leak from a cribriform plate fracture.
Beta-2 transferrin.
What doughy, tender swelling of the forehead signifies osteomyelitis of the frontal bone secondary to acute frontal sinusitis?
Pott's puffy tumor.
What step should be taken prior to inflating an anterior epistaxis balloon (e.g., Rapid Rhino) or inserting a preformed polyvinyl acetate sponge (e.g., Merocel)?
Soak/hydrate with water or coat with water-soluble antibiotic ointment; inflate balloon with air (never saline).
A patient with a history of recurrent otitis media presents with postauricular erythema, tenderness, and protrusion of the auricle. What diagnostic imaging modality is required and what is the initial IV antibiotic regimen?
Contrast-enhanced CT of the temporal bones; Ceftriaxone 2g IV or Levofloxacin 750mg IV (add Vancomycin/Pip-Tazo if recurrent).
What specific type of nasal packing should be preferentially used in patients with bleeding disorders or those taking oral anticoagulants?
Bioabsorbable/resorbable packing (e.g., Gelfoam, Surgicel, FloSeal) to avoid mucosal disruption upon removal.
Describe the step-by-step emergency bedside management for draining an uninfected auricular hematoma.
Sterile prep/anesthesia, small semicircular incision along helix/anthelix curvature, clot evacuation/curettage, suture, and application of a bolster or compression dressing.
What is the first-line oral antibiotic regimen recommended for uncomplicated acute bacterial rhinosinusitis in an adult without penicillin allergies?
Amoxicillin 500 mg PO TID (or high-dose Amoxicillin 875–1000 mg PO BID/TID).
When placing a 14F Foley catheter for emergency posterior epistaxis tamponade, what volume of air should be used to inflate the balloon in the choanal arch?
7 to 10 mL of air (never exceed 10 mL to prevent pressure necrosis, and never use liquid/saline).
A patient with a cochlear implant presents with fever, severe headache, and neck stiffness 6 months post-implantation. What is the most feared infectious complication and the most common causative organism?
Meningitis; Streptococcus pneumoniae.
Name two distinct dosing or delivery strategies for applying topical tranexamic acid (TXA) to control anterior epistaxis.
200 mg (100 mg/mL) atomized intranasally; 500 mg saturated on a cotton pledget/tampon; or 500 mg in 5 mL NS atomized intranasally.
Name three intracranial complications that can arise from an untreated or mismanaged nasal septal abscess.
Cavernous sinus thrombosis, meningitis, osteomyelitis, or brain/intracranial abscess.
Up to what percentage of orbital cellulitis cases are directly attributable to contiguous spread from adjacent paranasal sinus infections (most commonly ethmoid sinusitis)?
Up to 75%.
What non-invasive positive-pressure technique can be attempted by a parent or clinician to remove a smooth, non-spherical nasal foreign body in a cooperative pediatric patient?
The "Parent's Kiss" (or blowing directly into the child's mouth while occluding the unaffected naris).
A 68-year-old poorly controlled diabetic presents with severe, deep-seated left ear pain and foul-smelling otorrhea despite 3 weeks of topical ciprofloxacin drops. Physical exam reveals granulation tissue at the bony-cartilaginous junction of the auditory canal. The most likely causative pathogen is Pseudomonas aeruginosa, but failure to intervene rapidly can lead to osteomyelitis of the skull base and early paralysis of this specific cranial nerve.
What is Cranial Nerve VII (Facial Nerve)?
Malignant (Necrotizing) Otitis Externa: The facial nerve is the most common cranial nerve damaged due to its proximity to the stylomastoid foramen and the floor of the external auditory canal.
Next Steps in Severity: Extension to CN IX, X, or XI signals advanced skull base erosion and jugular foramen involvement.