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Updated: Jun 27, 2026

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