Routine Overnight Vital Signs Are Rarely Associated with Major Clinical Events in Patients Undergoing Radical Cystectomy: A Retrospective Cohort Study.

INTRODUCTION

Evidence has associated patient sleep disruption with adverse clinical outcomes. Overnight vital sign checks are a frequent source of patient sleep disruption. We sought to determine the utility of routine overnight vital sign checks in stable postoperative patients following radical cystectomy for bladder cancer.

METHODS

We assembled a database containing all routine vital sign checks from postoperative days 0 through 6 for all patients who underwent radical cystectomy at our institution during a 5-year period (2016-2020). Sets of overnight vital signs were flagged as "abnormal" based on specified criteria and then reviewed by 2 blinded reviewers to determine whether they were associated with significant clinical interventions.

RESULTS

A total of 546 patients representing 2,589 patient-nights in the hospital were included. Abnormal vital signs resulting in "moderate" or "major" clinical interventions (corresponding to concern for Clavien-Dindo grade ≥II complications) occurred during 17/2,589 (0.65%) patient-nights. Thus, 152 patient-nights of routine vital sign checks were required to identify a single moderate or major clinical event. Reviewing all overnight-onset complications, we noted that a majority (15/23, 65%) of Clavien-Dindo grade II complications were manifested only by symptoms or laboratory abnormalities without vital sign derangements, whereas all grade ≥III complications had associated vital sign abnormalities.

CONCLUSIONS

Routine overnight vital signs were associated with a low frequency of clinically significant events. Reduced intensity of overnight vital sign checks may be a safe addition to enhanced-recovery packages in carefully selected patients.