😮💨 Asthma Predictive Index (API)
UseWhen to use: ≥3 wheezing episodes/year when counseling future asthma risk.
StrataStringent positive raises later-asthma likelihood; negative lowers but does not exclude.
LimitsWhen not to use: first solitary viral wheeze. · Pitfall: undocumented parental asthma. · Not a lifelong asthma label.
SourceAsthma Predictive Index (Castro-Rodríguez / Tucson)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Gate ≥3 wheezes.
When to use
When to use: ≥3 wheezing episodes/year when counseling future asthma risk.
How it works
Stringent: ≥1 major or ≥2 minor; loose: ≥1 major or ≥1 minor (after ≥3 wheezes).
Key points
- Gate ≥3 wheezes.
- Major/minor rules.
- Next: controller shared decision.
References
- Asthma Predictive Index (Castro-Rodríguez / Tucson)
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| ≥3 wheezing episodes in the past year | No |
|---|---|
| Major: parental physician-diagnosed asthma | No |
| Major: physician-diagnosed atopic dermatitis | No |
| Minor: physician-diagnosed allergic rhinitis | No |
| Minor: wheezing apart from colds | No |
| Minor: eosinophilia ≥4% | No |
→APINot applicable
- Gate：<3 wheezing episodes/year — API not applied
| ≥3 wheezing episodes in the past year | Yes |
|---|---|
| Major: parental physician-diagnosed asthma | Yes |
| Major: physician-diagnosed atopic dermatitis | Yes |
| Minor: physician-diagnosed allergic rhinitis | Yes |
| Minor: wheezing apart from colds | Yes |
| Minor: eosinophilia ≥4% | Yes |
→APIStringent positive
- Majors / minors：2 / 3
- Cue：≥1 major or ≥2 minor — higher likelihood of later asthma
Verification & sources · governance
FAQ
Frequently asked questions
- Does Asthma Predictive Index (API) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Asthma Predictive Index (API) calculated in practice? Can you show a worked example?
- Inputs: ≥3 wheezing episodes in the past year No, Major: parental physician-diagnosed asthma No, Major: physician-diagnosed atopic dermatitis No, Minor: physician-diagnosed allergic rhinitis No, Minor: wheezing apart from colds No, Minor: eosinophilia ≥4% No → Result: API Not applicable（Gate: <3 wheezing episodes/year — API not applied） Inputs: ≥3 wheezing episodes in the past year Yes, Major: parental physician-diagnosed asthma Yes, Major: physician-diagnosed atopic dermatitis Yes, Minor: physician-diagnosed allergic rhinitis Yes, Minor: wheezing apart from colds Yes, Minor: eosinophilia ≥4% Yes → Result: API Stringent positive（Majors / minors: 2 / 3, Cue: ≥1 major or ≥2 minor — higher likelihood of later asthma）