The challenge
Nurses on Kestrel Valley's post-op units were fielding 47 alerts per unit, per day. Most were noise, so most were ignored, and the ones that mattered were buried with the rest.
The early-warning score the hospital relied on moved late. By the time it flagged a deteriorating patient, the window for early intervention was often closing.
“Vigil flagged a lactate trend on our post-op unit hours before our early-warning score moved. It didn't add alerts. It replaced a dozen with one my nurses trust.”
What they did
- 1.
Learning what normal looks like
Vigil studied each unit's own patterns for two weeks before it raised a single alert.
- 2.
Trends, not thresholds
Instead of firing on one abnormal value, Vigil watches how labs and vitals move together, like a lactate that climbs while blood pressure drifts.
- 3.
Tuned with the nurses
Unit managers reviewed every alert type with the Weave team and cut the ones that never led to action.
The result
Alerts fell from 47 to 3 per unit, per day, and the share acted on rose from 12% to 71%. On average, Vigil now flags sepsis-risk patterns six hours before the early-warning score moves, and time to escalation dropped from five and a half hours to forty minutes.