A 38-year-old woman from Delhi presents with a 3-week history of purulent nasal discharge, facial pain over the cheeks, and post-nasal drip. She reports that symptoms began after an upper respiratory tract infection. On examination, she has tenderness over the maxillary sinuses bilaterally, and nasal endoscopy reveals purulent secretions in the middle meatus. A non-contrast CT scan of the paranasal sinuses shows complete opacification of bilateral maxillary sinuses with air-fluid levels and thickened mucosa. What is the most appropriate next step in management?

Explanation

## Diagnosis and Clinical Context This patient presents with **acute bacterial maxillary sinusitis** (3-week duration, purulent discharge, imaging findings of air-fluid level and opacification). The clinical presentation and CT findings are classic for acute sinusitis rather than chronic disease. ## Management Algorithm for Acute Sinusitis ```mermaid flowchart TD A[Acute sinusitis diagnosed]:::outcome --> B{Severe symptoms or<br/>complications?}:::decision B -->|No| C[Medical management first line]:::action B -->|Yes| D[Consider IV antibiotics<br/>or urgent imaging]:::action C --> E[Oral antibiotics:<br/>Amoxicillin-clavulanate<br/>or fluoroquinolone]:::action C --> F[Nasal saline irrigation<br/>Topical decongestants]:::action C --> G[Review at 2 weeks]:::action G --> H{Improvement?}:::decision H -->|Yes| I[Continue conservative care]:::outcome H -->|No| J[Consider imaging<br/>and FESS]:::action ``` ## Why This Answer Is Correct **Key Point:** Acute bacterial sinusitis (< 4 weeks) is managed **medically first**—surgery is reserved for chronic sinusitis or complications. - **Antibiotic choice:** Amoxicillin-clavulanate is first-line for acute sinusitis in India (covers Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis). - **Adjunctive measures:** Nasal saline irrigation and topical decongestants (xylometazoline) reduce mucosal edema and promote sinus drainage. - **Duration:** 2 weeks of antibiotics is standard for acute sinusitis; review symptoms at 2 weeks to assess response. - **No emergency indicators:** This patient has no signs of intracranial extension (no fever, altered mental status, proptosis, or ophthalmoplegia), so hospitalization is not indicated. **High-Yield:** The presence of an air-fluid level on CT indicates acute infection, not chronicity. Chronic sinusitis shows complete opacification without air-fluid levels and occurs over ≥12 weeks. **Clinical Pearl:** Post-nasal drip and purulent discharge from the middle meatus are hallmarks of maxillary and ethmoid involvement; these respond well to medical therapy in the acute phase. ## Why Surgery Is Not First-Line Here - FESS is indicated for **chronic sinusitis** (≥12 weeks) refractory to medical therapy or for acute complications (orbital cellulitis, meningitis, cavernous sinus thrombosis). - This patient has acute sinusitis with no complications—medical management is appropriate. [cite:Scott-Brown's Otorhinolaryngology 8e Ch 12]