Diagnosis and Management of Acute Bacterial Sinusitis

Clinical Patterns and Antibiotic Consideration

The American Academy of Pediatrics recommends that the diagnosis of acute bacterial sinusitis requires meeting one of three specific clinical patterns, including persistent symptoms, severe symptoms, or a "double sickening" pattern 1, 2, 3
Patients with persistent symptoms, such as nasal discharge or daytime cough lasting ≥10 days without improvement, may be considered for antibiotic treatment or watchful waiting 2, 3
The American Academy of Otolaryngology-Head and Neck Surgery recommends that patients with severe symptoms, such as high fever ≥39°C with thick, purulent nasal discharge for ≥3-4 consecutive days, should receive antibiotics immediately 1, 2, 3
Patients with a "double sickening" pattern, characterized by initial improvement from a viral cold followed by new-onset fever ≥38°C or substantial worsening of nasal discharge/cough, should receive antibiotics regardless of total symptom duration 2, 3

The American Academy of Otolaryngology-Head and Neck Surgery recommends that patients with persistent symptoms at 10 days may be managed with either immediate antibiotics or watchful waiting for an additional 3-7 days 1, 4
Approximately 73-85% of patients improve spontaneously by 7-15 days without antibiotics 1, 4
The number needed to treat with antibiotics is 10-15 to get one additional person better 1, 4

The American Academy of Otolaryngology-Head and Neck Surgery recommends amoxicillin 500 mg twice daily (mild disease) or 875 mg twice daily (moderate disease) for 5-10 days as first-line antibiotic treatment 1, 4
Amoxicillin-clavulanate 875 mg/125 mg twice daily is preferred for patients with recent antibiotic use, age >65, or moderate-to-severe symptoms 1, 4

The American Academy of Otolaryngology-Head and Neck Surgery recommends intranasal corticosteroids, such as mometasone, fluticasone, or budesonide, twice daily to reduce inflammation and improve outcomes 1, 4
Saline nasal irrigation provides symptomatic relief 1, 4
Analgesics, such as acetaminophen or ibuprofen, may be used for pain and fever 1, 4

The American Academy of Pediatrics recommends that children with persistent symptoms may be managed with either antibiotics or an additional 3-day observation period 2, 3
All children with severe or worsening sinusitis should start antibiotics immediately 2, 3
Pediatric dosing: amoxicillin 45 mg/kg/day (standard) or 80-90 mg/kg/day (high-dose for risk factors) in 2 divided doses 2, 3