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Related Experiment Video

Updated: Jun 27, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

[Time delay in beginning first OR positions in the morning].

J Unger¹, M Schuster, K Bauer

¹Klinik für Anästhesiologie und operative Intensivmedizin, Campus Charité Mitte/Campus Virchow Klinikum, Charité - Universitätsmedizin Berlin, Berlin.

Der Anaesthesist

|December 17, 2008

Summary

Delayed anesthesia induction in 27.5% of morning surgeries caused significant delays. Starting anesthesia earlier to meet surgical schedules increases pre-incision waiting times, proving on-time induction isn't an optimal operating room management target.

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Automated, Quantitative Cognitive/Behavioral Screening of Mice: For Genetics, Pharmacology, Animal Cognition and Undergraduate Instruction

Automated, Quantitative Cognitive/Behavioral Screening of Mice: For Genetics, Pharmacology, Animal Cognition and Undergraduate Instruction

Published on: February 26, 2014

Area of Science:

Anesthesiology
Operating Room Management
Health Services Research

Context:

Delayed morning operation room (OR) starts lead to inefficient use of resources and personnel.
Optimizing anesthesia preparation and induction times is crucial for adhering to OR schedules.
Limited data exists on the interplay between anesthesia process durations and delayed OR starts.

Purpose:

To analyze the incidence and causes of delayed anesthesia induction in morning OR cases.
To investigate the relationship between early/late anesthesia induction completion and OR start times.
To evaluate the impact of achieving on-time anesthesia induction on OR efficiency using simulation.

Summary:

A prospective study of 710 morning OR cases found anesthesia induction delays in 27.5%, averaging 19.3 minutes.
Key reasons for delays included complex anesthesia inductions (difficult line placement) and organizational issues (schedule changes, patient transport).
Simulation indicated that universal on-time induction requires earlier starts, significantly increasing pre-incision waiting, with minimal impact on surgical delays.

Impact:

Findings suggest that aiming for 100% on-time anesthesia induction is not a feasible or effective OR management strategy.
Highlights the need for improved OR scheduling and management protocols that account for anesthesia-dependent and organizational factors.
Provides evidence to inform strategies for optimizing OR workflow and resource utilization.