Peritonsillar/Retropharyngeal Abscess

Patient Population:
Pediatric

Need for drainage/source control of head and neck infections should be evaluated carefully in consultation with Pediatric Otolaryngology, Head and Neck Surgery. If initial non-operative management is chosen, a narrow spectrum regimen (i.e. without vancomycin) is encouraged to facilitate transition to oral therapy. 

ID consultation is recommended for head and neck infections occurring in immunocompromised patients, and for those with atypical features, chronic course, or lack of response to first line therapy. 

Condition Major Pathogens  First Choice Therapy Alternative Therapy Comments
Peritonsillar/ retropharyngeal abscess  

Group A streptococcus 

Staphylococcus aureus 

Oral anaerobes 

Inpatient

Ampicillin-sulbactam (Unasyn)
50 mg ampicillin/kg/dose (max 2000 mg ampicillin/dose) IV q6h  

If patient has airway compromise, extensive abscess that will be drained, or history of documented MRSA infection or carriage within the last 6 months:  

ADD Vancomycin  

(follow link for dosing & monitoring)   

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Outpatient/step down therapy

Amoxicillin-clavulanate (Augmentin)
45 mg amoxicillin/kg/dose (max 1000 mg amoxicillin/dose)* enterally bid  

Penicillin or cephalosporin allergy with higher risk for allergic reaction

Clindamycin
10 mg/kg/dose (max 900 mg/dose) IV q8h  

OR  

Clindamycin
10 mg/kg/dose (max 600 mg/dose) enterally tid 

Urgent OHNS consult recommended to evaluate need for source control  

Consider ID consult (see details above) 

Duration: 10-14 days based on severity and response to treatment 

If Vancomycin was started and MRSA not recovered from drained abscess, discontinue Vancomycin 

*See guidance on Amoxicillin-Clavulanate maximum dosing and formulations