War-game a left-without-being-seen ladder by proving each LWBS lane has a named owner, a measured age-out, and a reverse path before draft labels start governing every ED claim.
Left-without-being-seen ladders fail when "left" means a status without a decision artifact, when teams dual-count a draft LWBS as both approved and live, and when high-volume pods still pin to one thin triage desk because the lane inventory is incomplete. The review needs one written inventory of LWBS lanes, one owner who can deny a risky shortcut, and a documented consequence when a failed ladder ages past the deadline.
Write the ladder before the war game
State which pods the ladder covers, the effective date, which LWBS lanes change, how versions are stored, and what happens to patients already in flight. Name the acuity bands that feel it first and the throughput promises that depend on coherent LWBS handling. If the memo mixes a left-without-being-seen ladder with an ESI triage rewrite and a boarding crisis path, split them.
Write the decision you will make if the war game finds nothing new. Also write the reverse criteria: the missed lane, acuity gap, or patient deadline that would force an LWBS rollback within a stated window.
Failure modes worth listing
- A high-acuity pod stays soft while the aggregate LWBS dashboard stays green.
- Two teams claim the same lane ownership and neither can force a freeze at week end.
- A restore has already left a pod without a trusted LWBS state.
- The primary LWBS export lags beyond the planned observation window.
- An operator skips an LWBS gate because a shift cutoff is near.
For each failure, require detection time, pod impact, containment, and the authority to force an LWBS rollback. Commands and export links belong in the runbook.
Run the ladder through opposing seats
Feed Pingpong the ladder memo, the lane exhibits, and seating briefs for ED ops, triage nursing, registration, and risk. First pass steelmans the ladder. Later passes attack from those seats. Final pass turns surviving objections into phased lane rules, mitigations, or a changed recommendation. Agreement across passes is not proof. Keep the objections that still have evidence gaps.
Pair with the ED ops lead seat, a boarding crisis stress test, an ESI triage rewrite, and a bed flow huddle rule. More operating decisions live in the war-game decisions hub.
Ship the ladder only when approved and blocked LWBS labels can be reproduced from stored LWBS exports without a verbal override.