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Scores & Severity

Appendicitis Inflammatory Response (AIR) Score

Risk-stratifies suspected appendicitis from symptoms, signs and inflammatory markers (0–12).

Written for clinicians. If you're a parent or patient, don't act on these numbers — talk to your child's doctor.

Scope: Decision aid only — does not replace serial examination, imaging, or surgical assessment.

Inputs

FieldUnitNotes
Vomiting
Right iliac fossa pain
Rebound tenderness / guarding
Temperature ≥38.5°C
Polymorphonuclear leukocytes
WBC count
CRP

FAQ

What is the Appendicitis Inflammatory Response (AIR) Score?

Risk-stratifies suspected appendicitis from symptoms, signs and inflammatory markers (0–12).

What inputs does the Appendicitis Inflammatory Response (AIR) Score need?

Vomiting, Right iliac fossa pain, Rebound tenderness / guarding, Temperature ≥38.5°C, Polymorphonuclear leukocytes, WBC count, CRP.

Are there any limitations?

Decision aid only — does not replace serial examination, imaging, or surgical assessment.

Related guides

AIR Score: Appendicitis Inflammatory Response Stratification

The AIR score for suspected appendicitis — its seven weighted items, the 0–12 scale, low/indeterminate/high bands, and how it compares with Alvarado and PAS.

Related Scores & Severity calculators

Pediatric Appendicitis Score (PAS)

Eight-item score (0–10) estimating the likelihood of acute appendicitis in children.

Glasgow Coma Scale (GCS)

Assessment of consciousness from eye, verbal and motor responses (3–15).

Childhood Hodgkin Int'l Prognostic Score (CHIPS)

Risk stratification of intermediate-risk paediatric Hodgkin lymphoma from four baseline features, estimating 4-year event-free survival.

FLACC Pain Scale

Behavioural pain assessment (0–10) for young or non-verbal children: Face, Legs, Activity, Cry, Consolability.

Alvarado Score (Appendicitis)

MANTRELS score (0–10) estimating the likelihood of acute appendicitis from symptoms, signs and labs.

Kocher Criteria (Septic Hip)

Predicts the probability of septic arthritis of the hip versus transient synovitis from four predictors.

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