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?

Question

Accepted Answer

A. Amoxicillin. ## 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.

Answer

B. Azithromycin

Answer

C. Cefixime

Answer

D. Ciprofloxacin

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

Pathophysiology Context

First-Line Antibiotic Regimen

When to Use Alternatives

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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