FA-64639 / Clinical triage scoring / Member archive

Stepwise field trauma destination tiering: older adult systolic threshold · case 04

A 65-year-old with systolic 101 is not recognised as hypotensive for their age.

Member previewVariant 4 · 3 implementations · 11 checks per implementation

Case contract

Input {gcs, sbp, rr, age, penetrating_torso, flail_chest, two_long_bone_fx, fall_m, ejection, anticoag, pregnant_weeks}. Toy steps in order: (1) gcs <= 13, sbp below 90 (below 110 when age >= 65), rr < 10 or rr > 29 -> TIER1 step 1; (2) penetrating torso, flail chest or two long-bone fractures -> TIER1 step 2; (3) fall above 6 m (above 3 m when age < 15) or ejection -> TIER2 step 3; (4) anticoagulation, pregnancy beyond 20 weeks or age >= 65 -> TIER3 step 4; else LOCAL step 0. Return {tier, step}.

Why this case matters

Field triage is an ordered cascade of age-adjusted physiological, anatomical and mechanism criteria; each comparison is a separate fault site.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
65-year-old with systolic 100	`{"step": 4, "tier": "TIER3"}`	`{"step": 1, "tier": "TIER1"}`	Failed

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