Attia Pediatric Pharyngitis (GAS) Predictor

• Child or adolescent with sore throat and concern for GAS.
• Not validated for adults or for children under 3 years old.
• Use alongside local testing pathways, not as a stand-alone rule-out.

Set tonsillar swelling severity, anterior cervical node tenderness/enlargement, and whether coryza is present. We map the three features to probability bands based on Attia’s reported thresholds.

• Moderate to severe tonsillar swelling increases probability.
• Tender/enlarged anterior cervical nodes increase probability.
• Coryza suggests viral illness and lowers probability.

• High probability still needs confirmatory testing in children.
• Intermediate probability: perform RADT with culture backup per policy.
• Low probability: consider viral etiologies and supportive care.

1. Score clinical findings (tonsillar swelling, anterior cervical nodes, coryza) during the initial exam.
2. Decide testing path: RADT first, then backup culture per local pediatric policy when indicated.
3. Avoid empiric antibiotics solely from score category in most pediatric pathways.
4. Reassess if symptoms evolve or if test results conflict with exam trajectory.

• Toxic appearance, drooling, stridor, or concern for deep neck space infection.
• Persistent fever or worsening pain despite supportive care and negative initial testing.
• Severe unilateral neck pain/swelling, trismus, voice change, or dehydration.
• Recurrent visits with discordant clinical course and test results.

• After initial score and testing decision: reassess hydration, swallowing tolerance, and symptom trend before disposition.
• If symptoms persist with negative initial testing: scheduled reassessment and possible repeat pathway evaluation per local protocol.
• Any airway concern, worsening unilateral pain, or poor oral intake: immediate reassessment and escalation.

• Attia feature summary: tonsillar swelling, anterior nodes, and coryza status.
• Testing timeline: RADT result, culture sent/not sent, and expected result timing.
• Current symptom trajectory and hydration status.
• Escalation trigger for immediate reassessment if symptoms worsen.
• Follow-up plan with caregiver return precautions documented.

"This score helps us estimate strep likelihood, but we still use test-confirmed treatment in children. If breathing, swallowing, hydration, or neck pain worsen, return right away rather than waiting for routine follow-up."

Example: a school-age child has sore throat, moderate tonsillar swelling, tender anterior nodes, and no coryza. This usually falls in a moderate-to-higher probability band, but pediatric stewardship still favors test-confirmed treatment rather than empiric antibiotics.

• Order RADT and follow local backup culture policy if RADT is negative.
• Give supportive care while awaiting confirmatory results when clinically stable.
• Escalate for airway symptoms, dehydration, toxic appearance, or rapidly progressive neck pain/swelling.

• Use alongside Centor/McIsaac and local testing pathways to guide RADT/culture.
• Intermediate bands should prompt testing, not empiric therapy. High probability still warrants confirmation in children.
• Consider differentials (viral pharyngitis, EBV/mono) and provide supportive care and return precautions.
• Document exposure history, prior antibiotics, and immunization status when relevant.

• Attia pediatric pharyngitis predictor used as adjunctive decision support; not used as stand-alone treatment trigger.
• Discussed testing strategy with caregiver (RADT +/- backup culture) and reviewed return precautions.
• Reviewed viral features and differential diagnoses; antibiotic decision tied to confirmatory testing plan.

• Age, symptom duration, and exposure history.
• Tonsillar exam findings and cervical node assessment.
• Presence or absence of coryza and other viral features.
• Testing plan (RADT/culture) and return precautions.

• Centor/McIsaac score calculator: use when the workflow calls for the more familiar Centor-style scoring frame.
• Pediatric fever thresholds: use when fever triage or age-based escalation is driving the visit.
• Pediatric antibiotic dosing calculator hub: use only after testing and local guidance support treatment.

• Centor/McIsaac for combined adult/pediatric scoring.
• Amoxicillin dosing and Penicillin VK dosing when treatment is confirmed.
• Pediatric ED calculators hub to explore additional ED/ID tools.

• Derived from a single pediatric cohort; local prevalence affects predictive value.
• Does not replace microbiologic testing in children.
• Does not distinguish EBV or other causes of exudative pharyngitis.

• Attia M et al. Multivariate predictive models for GAS pharyngitis in children. Acad Emerg Med. 1999 Jan.
• Shulman ST et al. IDSA guideline for group A streptococcal pharyngitis. Clin Infect Dis. 2012.
• CDC: Strep throat (group A strep pharyngitis).