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NCT Number: NCT07065812

Team Familiarity and Perioperative Outcomes in Non-Cardiac Surgery

The goal of this retrospective observational study is to quantify the impact of team collaboration on work efficiency in operating room and patient safety outcomes in non-cardiac surgical teams. The main purpose is to answer:

How does team collaboration affect work efficiency in operating room and patient safety outcomes during/after surgery? The data will be obtained from the Hospital Electronic Medical Record Information System, participants already finished all the planned surgeries.

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Key information

Conditions

Operating Room Efficiency

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

About this study

This study aims to reveal the crucial role of teamwork in surgical operations. Firstly, by calculating the degree of collaboration within the surgical team, we quantify the interactions, communication, and trust among team members, and subsequently analyze the impact of this collaboration on surgical team work efficiency indicators including pre-anesthesia preparation time, anesthesia induction time, and operation time, to identify optimal practices. Secondly, it analyzes how the degree of cooperation among surgical teams affects patient safety indicators such as intraoperative blood loss, the incidence of unplanned secondary surgeries, and the in-hospital mortality rate, thereby revealing the direct or indirect contribution of teamwork to patient safety. The impact of surgical team size, gender composition, and shift patterns on work efficiency and patient safety indicators was also analyzed.

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • All elective surgeries for adults (age ≥18 years)

Exclusion criteria

  • Surgeries in which patient demographics (age, gender), ASA grade, procedure details, and positional data were unattainable
  • Cardiac surgical procedures (with a fixed surgical team)
  • Operations under non-intubated general anesthesia or intravenous anesthesia (primarily diagnostic procedures not requiring close multidisciplinary collaboration)
  • Surgical cases with missing data on pre-anesthesia preparation time, anesthesia induction time, and surgical procedure duration
  • Surgical cases with missing data on team members' years of experience and gender information.
  • Surgical cases with missing data on intra- and post-operative major complications and other safety-related outcome measures

Treatment and study plan

Surgical team familiarity

Other

Surgical team familiarity: the degree of collaboration within the surgical team is statistically described based on data regarding team personnel and composition, which is used to calculate the Intraoperative Familiarity Score (IFS)-the core component of this study. The specific methodology includes IFS=（X1+X2+X3+X4+X5+X6…）/ N N=nCr=n!/r!(n-r)! Here, X represents the number of times a pair of team members has worked together over a specified period (this process is repeated for all possible pairings in the team), and N is the total number of possible pairwise combinations in the team.

Composition and Dynamics of the Surgical Team

Other

Basic indicators reflecting surgical team personnel and composition:

  • Number of surgical, anesthesia, and nursing team members participating in procedures: are obtainable via the Anesthesia Information Management System (AIMS).
  • Shift changes among surgical, anesthesia, and nursing teams during individual procedures: can be tracked through the AIMS.
  • Gender ratio within surgical, anesthesia, and nursing teams: will be derived from the Hospital Information System (HIS)."

Primary outcomes

  1. Surgical Team Efficiency

    Time frame: Perioperative

    The primary outcome measure of this study is surgical team efficiency, which is represented by three time intervals: pre-anesthesia preparation time (from patient entry into the operating room to anesthesia initiation), anesthesia induction time (from anesthesia initiation to surgery start), and surgical duration (from surgery start to surgery end). These intervals are calculated in minutes using the anesthesia information management system (AIMS), with timestamps recorded in the anesthesia record form within AIMS for the following key events: patient arrival in the operating room, anesthesia initiation, surgery start, surgery conclusion, anesthesia end and patient exit from the operating room.

Secondary outcomes

  1. Blood loss

    Time frame: Perioperative

    The total volume of blood loss during the procedure，measured in milliliters (mL) .

  2. Duration of PACU (Post-Anesthesia Care Unit) stay

    Time frame: Perioperative

    From admission to discharge from the PACU recorded in minutes/hours

  3. Unplanned ICU admission within 24 hours post-surgery

    Time frame: Perioperative

  4. Number of postoperative ICU admissions

    Time frame: Perioperative

  5. ICU stay duration recorded in days

    Time frame: Perioperative

  6. Unplanned secondary surgery

    Time frame: Perioperative

  7. Postoperative infection

    Time frame: Perioperative

  8. In-hospital mortality

    Time frame: Perioperative

  9. Total hospital stay duration recorded in days

    Time frame: Perioperative

  10. Total hospitalization expenses recorded in RMB/CNY

    Time frame: Perioperative

  11. Improvement status of the primary diagnosis on the day of discharge

    Time frame: Perioperative

  12. Rescue events during hospitalization

    Time frame: Perioperative

Sponsors and collaborators

Lead sponsor

Zhongda Hospital

Other

Registry information

Official study title

The Impact of Team Familiarity on Surgical Outcomes and Patient Safety in Non-Cardiac Surgery

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Jul 15, 2025
Registry last updated
Jul 15, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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