Comprehensive Reference for Failure Chains in Healthcare

Purpose: A reference spine of reusable, non-emotive failure chains for Singapore.
Each trace is a mechanism, not an opinion.
Use: diagnosis, comparison, early-warning, and safe AI reuse across BioOS → MedicineOS → HealthOS.

VERSION CONTRACT (DO NOT EDIT RETROACTIVELY)

Unified Spec Version: v0.1
Rule: Forward-only. Never rename trace IDs. Add only new traces or new sensors.

TRACE FORMAT (LOCKED)

Each trace uses this schema:

ID
Zoom(s): Z#
Phase: BP# / P#
Lanes Hit: BIO.Lxx / MED.Lxx / HLT.Lxx
Earliest Tripwire: BIO.Sxx / MED.Sxx / HLT.Sxx
Mechanism Chain: (arrow chain, no blame)
Collapse Mode: I / II / III

A) BIO → MED → HLT (FAST PROPAGATION)

TRACE.SGP.01 — Latency Spiral (Classic)

Zoom: Z1→Z3
Phase: BP2→BP1 ; P2→P1
Lanes: BIO.L03, MED.L02/04, HLT.L04
Tripwire: BIO.S10, MED.S10
Chain: growth↑ → detection latency↑ → time-to-treatment↑ → acute load↑ → buffers burn
Mode: II

TRACE.SGP.02 — Coupling Cascade

Zoom: Z1→Z3
Phase: BP2→BP1 ; P2→P1
Lanes: BIO.L04, MED.L07, HLT.L04
Tripwire: BIO.S21
Chain: coupling↑ → multi-habitat spread → misrouting↑ → transfers propagate → multi-node overload
Mode: III

TRACE.SGP.03 — Importation Reset

Zoom: Z3
Phase: BP2 oscillation ; P2 erosion
Lanes: BIO.L02/04, MED.L02, HLT.L02
Tripwire: BIO.S22
Chain: repeated seeding → recovery incomplete → next shock arrives → buffers never refill
Mode: II

TRACE.SGP.04 — Vector Amplification

Zoom: Z1→Z3
Phase: BP1 surge ; P2 risk
Lanes: BIO.L04, MED.L02, HLT.L01/04
Tripwire: BIO.S20
Chain: vector density↑ → transmission efficiency↑ → control lag>propagation → acute spikes
Mode: III

B) SILENT / CHRONIC (SLOW ATTRITION)

TRACE.SGP.05 — Chronic-to-Acute Conversion

Zoom: Z0→Z3
Phase: BP2 persistent ; P2→P1
Lanes: BIO.L05/06, MED.L05, HLT.L06→L04
Tripwire: MED.S40
Chain: follow-up defaults → control fails → preventable admissions → acute cannibalises chronic
Mode: II

TRACE.SGP.06 — Rehab Starvation

Zoom: Z2→Z3
Phase: P2→P1
Lanes: MED.L05, HLT.L07
Tripwire: HLT.S22
Chain: rehab throughput↓ → longer stays → bed lock-in → acute tail waits
Mode: II

TRACE.SGP.07 — Record Reset Loop

Zoom: Z2
Phase: P2 erosion
Lanes: MED.L08, MED.L03
Tripwire: MED.S50
Chain: records unavailable → diagnosis resets → repeats↑ → backlog growth
Mode: II

TRACE.SGP.08 — Adherence Fade

Zoom: Z0→Z2
Phase: BP2→BP1 ; P2 risk
Lanes: MED.L05, HLT.L06
Tripwire: MED.S42
Chain: refill gaps → relapse visits → chronic load converts to acute
Mode: II

C) WORKFORCE & CAPACITY

TRACE.SGP.09 — Workforce Attrition Spiral

Zoom: Z2→Z3
Phase: P2→P1
Lanes: HLT.L10, MED.L02/04
Tripwire: HLT.S30
Chain: attrition↑ → slots↓ → latency↑ → backlog↑ → errors↑
Mode: II

TRACE.SGP.10 — Skill Bottleneck

Zoom: Z2
Phase: P2
Lanes: MED.L02, MED.L04
Tripwire: MED.S11
Chain: specialised skill scarce → TAT↑ → time-to-treatment↑ → escalation
Mode: II

TRACE.SGP.11 — Surge Without Slack

Zoom: Z3
Phase: P2→P1
Lanes: HLT.L04
Tripwire: HLT.S11
Chain: volatility spike → buffers insufficient → tail risk dominates
Mode: III

TRACE.SGP.12 — Training Gap

Zoom: Z3
Phase: P2 erosion
Lanes: HLT.L10
Tripwire: HLT.S32
Chain: entrants<exits → future throughput↓ → latent collapse
Mode: II

D) ROUTING & TRIAGE ERRORS

TRACE.SGP.13 — Misrouting Cascade

Zoom: Z2→Z3
Phase: P2 risk
Lanes: MED.L07, HLT.L04
Tripwire: MED.S02
Chain: low-acuity uses high-acuity → true emergencies compete → tails worsen
Mode: III

TRACE.SGP.14 — Late Escalation

Zoom: Z1→Z2
Phase: BP1 ; P2 risk
Lanes: MED.L02/04
Tripwire: MED.S30
Chain: escalation delayed → deterioration → higher-cost intervention later
Mode: II

TRACE.SGP.15 — Over-Escalation

Zoom: Z2
Phase: P2
Lanes: MED.L07, HLT.L04
Tripwire: MED.S02
Chain: conservative triage → acute congestion → access loss elsewhere
Mode: II

E) SYSTEM MEMORY & COUPLING

TRACE.SGP.16 — Information Lag

Zoom: Z2→Z3
Phase: P2 erosion
Lanes: MED.L08, HLT.L11
Tripwire: MED.S51
Chain: handover loss → repeat work → throughput loss
Mode: II

TRACE.SGP.17 — Tight Coupling Brittleness

Zoom: Z3
Phase: P2→P0 pockets
Lanes: HLT.L04
Tripwire: HLT.S12
Chain: no redundancy → single cut → cascade
Mode: III

TRACE.SGP.18 — Buffer Burn

Zoom: Z3
Phase: P2→P1
Lanes: HLT.L04
Tripwire: HLT.S11
Chain: repeated spikes → buffers never refill → steady attrition
Mode: II

F) PREVENTION & DETECTION

TRACE.SGP.19 — Prevention Drift

Zoom: Z3
Phase: P2 erosion
Lanes: HLT.L01
Tripwire: HLT.S01
Chain: coverage↓ → incidence↑ → downstream load↑
Mode: II

TRACE.SGP.20 — Screening Backlog

Zoom: Z2→Z3
Phase: P2 risk
Lanes: MED.L02, HLT.L02
Tripwire: MED.S10
Chain: backlog↑ → late finds → acute demand later
Mode: II

G) RECOVERY FAILURES

TRACE.SGP.21 — Truncation Missed

Zoom: Z3
Phase: P2→P1
Lanes: HLT.L04
Tripwire: early signals ignored
Chain: accelerating failure not cut → irreversibility threshold crossed
Mode: III

TRACE.SGP.22 — Stitching Failure

Zoom: Z3
Phase: P1 persistence
Lanes: HLT.L07/L10
Tripwire: HLT.S22, HLT.S32
Chain: regeneration lags → cannot rejoin safe trajectory
Mode: II

H) EDGE / RARE BUT HIGH-IMPACT

TRACE.SGP.23 — Data Shock

Zoom: Z2→Z3
Phase: P2 risk
Lanes: MED.L08, HLT.L11
Tripwire: MED.S50 collapse
Chain: records unavailable system-wide → decision latency↑ → errors↑
Mode: III

TRACE.SGP.24 — Multi-Lane Collision

Zoom: Z3
Phase: P2→P0 pockets
Lanes: multiple
Tripwire: simultaneous sensor spikes
Chain: acute+chronic+workforce fail together → fast attrition
Mode: III

HOW TO USE THIS LIBRARY (REFERENCE RULES)

Match earliest tripwire to a live signal.
Select the trace whose chain matches observed propagation.
Check boundaries violated (latency, buffers, continuity, workforce).
List repair knobs (no advice).

CANONICAL REUSE PROMPT (FOR AI)

“Given live sensors for SGP, match earliest tripwire to SGP.TRACE, output likely failure chain, identify violated safety boundary, and list repair knobs. Keep policy facts separate from CivOS interpretation.”

Singapore Cross-OS Failure Trace Library (SGP.TRACE) — Unified Spec v0.1