Odontogenic deep neck infection with trismus and early airway compromise
A 44-year-old man with type 2 diabetes presents with 5 days of worsening left-sided dental pain, fever, and neck swelling. He is drooling slightly, has a muffled voice, and can open his mouth only 2 cm. Temperature is 39.1°C, heart rate 118, blood pressure 138/84, respiratory rate 24, and SpO2 94% on room air. Examination shows a tender, indurated left level II neck swelling with erythema, no fluctuance. Trismus limits the oropharyngeal view; the left tonsil is medially displaced but there is no peritonsillar fluctuance. WBC is 21 x 10^9/L, CRP 280 mg/L, glucose 320 mg/dL, and creatinine 1.1 mg/dL. Contrast CT shows a 4 x 3 cm rim-enhancing parapharyngeal collection with mild airway narrowing and no gas. He has a decayed left lower molar. He is started on IV fluids and ceftriaxone plus metronidazole.
1. How should his airway be secured, and what are the dangers of routine laryngoscopy?
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He has early airway compromise with drooling, muffled voice, trismus, and a parapharyngeal collection. He needs a controlled awake airway in the operating room with ENT and anesthesia present. Awake fiberoptic intubation is preferred if expertise is available; awake tracheostomy under local anesthesia is the safer choice if the airway is unstable, if fiberoptic access is predicted to be difficult, or if there is severe trismus or pharyngeal distortion. Routine sedation and direct laryngoscopy are dangerous because they can precipitate complete obstruction, obscure the view with secretions, and make rescue impossible. Preoxygenate, suction, and have surgical airway equipment ready. Do not send him to CT or the ward without a definitive airway plan.
2. Critique the antibiotic regimen and outline source control.
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Ceftriaxone plus metronidazole covers streptococci and anaerobes but is not optimal for odontogenic deep neck infection, where ampicillin-sulbactam or piperacillin-tazobactam is preferred for broader aerobic and anaerobic coverage. Add vancomycin only if there is MRSA risk. Control diabetes with insulin and fluids. Source control is urgent: transcervical drainage of the parapharyngeal collection, extraction of the decayed molar, and cultures for aerobic and anaerobic organisms. Antibiotics alone will not cure a 4 x 3 cm rim-enhancing abscess. Postoperatively, continue IV antibiotics until clinical improvement, afebrile for 24-48 hours, and repeat imaging if fever or swelling persists.
3. What complications would you monitor for, and what follow-up is needed?
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Monitor for airway obstruction, mediastinitis, jugular vein thrombosis, carotid erosion, sepsis, and necrotizing fasciitis. Keep him in an intensive care setting initially, trend WBC, CRP, glucose, and renal function, and examine the neck and airway repeatedly. If fever persists beyond 48-72 hours, repeat contrast CT to look for undrained loculations or mediastinal extension. Arrange dental follow-up for the remaining teeth and diabetes education, because uncontrolled hyperglycemia predicts recurrence. Counsel that smoking and poor dental hygiene increase risk. After discharge, review wound healing, ensure antibiotic completion, and confirm dental extraction has been completed.