A 6-year-old child presents with acute onset ear pain, fever (38.5°C), and conductive hearing loss. Otoscopy reveals a bulging, hyperemic tympanum with loss of landmarks. Pure tone audiometry shows air-bone gap. What is the drug of choice for acute suppurative otitis media in this child?

Explanation

## Drug of Choice for Acute Suppurative Otitis Media **Key Point:** Amoxicillin is the first-line antibiotic for acute suppurative otitis media (ASOM) in children and adults due to excellent middle ear penetration, broad coverage of common pathogens, and proven efficacy. ## Pathophysiology Context Acute suppurative otitis media results from bacterial infection (commonly *Streptococcus pneumoniae*, *Haemophilus influenzae*, *Moraxella catarrhalis*) following Eustachian tube dysfunction. The bulging tympanum indicates pus accumulation in the middle ear space. ## First-Line Antibiotic Regimen | Feature | Amoxicillin | Alternative Rationale | |---------|-------------|----------------------| | **Dosage (child)** | 40–45 mg/kg/day in 3 divided doses | Standard pediatric dosing | | **Duration** | 7–10 days | Adequate for bacterial eradication | | **Spectrum** | Gram-positive cocci, *H. influenzae* | Covers 90% of ASOM pathogens | | **Middle ear penetration** | Excellent (>50% of serum levels) | Critical for otitis media | | **Resistance profile** | Low resistance in most regions | Penicillin-susceptible pneumococci still predominant | **High-Yield:** Amoxicillin achieves superior concentrations in middle ear fluid compared to other oral antibiotics, making it the gold standard for ASOM. [cite:Hazarika ENT 5e Ch 4] ## When to Use Alternatives 1. **Amoxicillin-clavulanate** — if *β*-lactamase–producing *H. influenzae* or *M. catarrhalis* suspected (increased resistance in some regions) 2. **Cephalosporins (cefixime, cefpodoxime)** — in penicillin-allergic patients (non-anaphylactic) 3. **Macrolides (azithromycin)** — only if true penicillin anaphylaxis; inferior middle ear penetration 4. **Fluoroquinolones (ciprofloxacin)** — NOT first-line for ASOM; reserved for chronic suppurative otitis media with discharge or when systemic antibiotics fail **Clinical Pearl:** In India, amoxicillin remains the most cost-effective and widely recommended first-line agent for uncomplicated ASOM in both pediatric and adult populations.