Acute Rhinosinusitis Treatment Guidelines

Appropriate Antibiotic Selection

The American Academy of Otolaryngology-Head and Neck Surgery recommends amoxicillin (1.5-4g/day) as a first-line treatment option for mild acute bacterial rhinosinusitis in adults without recent antibiotic exposure 3
The American Academy of Otolaryngology-Head and Neck Surgery recommends amoxicillin-clavulanate (1.75-4g/250mg per day) as a first-line treatment option for mild acute bacterial rhinosinusitis in adults without recent antibiotic exposure 1
For patients with penicillin allergies, the American Academy of Family Physicians suggests alternatives such as trimethoprim-sulfamethoxazole, with bacteriologic failure rates of 20-25% 5
The American Academy of Otolaryngology-Head and Neck Surgery recommends doxycycline as an alternative for patients with penicillin allergies 1

Ceftriaxone (1g/day IM or IV for 5 days) is recommended by the American Academy of Otolaryngology-Head and Neck Surgery for moderate disease when oral options are not appropriate, with high predicted clinical efficacy (90-92% in adults, 91-92% in children) 1
The American Academy of Otolaryngology-Head and Neck Surgery recommends ceftriaxone for treatment failures not responding to initial therapy after 72 hours, and for severe infections requiring parenteral therapy 1, 2

The American Academy of Family Physicians states that most cases of acute rhinosinusitis are viral and resolve without antibiotics, with symptomatic treatment preferred for mild cases 5
Antibiotic therapy should be reserved for symptoms lasting ≥7 days, severe symptoms, or purulent nasal discharge with maxillary pain/tenderness, according to the American Academy of Family Physicians 5
Treatment response should be assessed at 72 hours, with lack of improvement warranting reevaluation or change in therapy, as recommended by the American Academy of Otolaryngology-Head and Neck Surgery 1, 2

The American Academy of Otolaryngology-Head and Neck Surgery advises against using broad-spectrum parenteral antibiotics like ceftriaxone-sulbactam for uncomplicated acute rhinosinusitis, as it promotes antimicrobial resistance and is not cost-effective 1, 2
The American Academy of Family Physicians warns against overtreatment of viral rhinosinusitis with antibiotics, with approximately 40-60% of cases resolving spontaneously 5
Failure to consider local resistance patterns when selecting empiric therapy, particularly in areas with high prevalence of drug-resistant S. pneumoniae, is a pitfall to avoid, according to the American Academy of Otolaryngology-Head and Neck Surgery 2