Operating Room Team Familiarity and Perioperative Outcomes in Non-Cardiac Surgery
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Operating Room Team Familiarity. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
The Impact of Operating Room Team Familiarity on Perioperative Efficiency and Patient Safety Outcomes in Non-Cardiac Surgery
Overview
The goal of this retrospective observational cohort study is to investigate the association between operating room team familiarity and perioperative outcomes in non-cardiac surgery. The operating room team includes surgeons, anesthesiologists, and operating room nurses. Team familiarity will be quantified using the Intraoperative Familiarity Score (IFS), which is calculated based on historical collaboration frequency among team members. The study will evaluate whether different levels of operating room team familiarity are associated with operating room efficiency indicators and patient safety outcomes. Data will be obtained from electronic medical records, anesthesia information management systems, and surgical databases of patients who underwent non-cardiac surgery at Zhongda Hospital.
Detailed description
This retrospective observational cohort study investigates the association between operating room team familiarity and perioperative outcomes in non-cardiac surgery.
The operating room team consists of surgeons, anesthesiologists, and operating room nurses. Operating room team familiarity is quantified using the Intraoperative Familiarity Score (IFS), which reflects the historical collaboration frequency among team members involved in surgical procedures.
The IFS is calculated based on the historical frequency of collaboration among all possible pairs of operating room team members, including surgeons, anesthesiologists, and operating room nurses. For each surgical procedure, previous working relationships among participating team members are assessed using historical surgical records. The IFS represents the overall familiarity level of the operating room team, with higher IFS values indicating greater familiarity among team members.
The primary objective of this study is to evaluate whether operating room team familiarity is associated with operating room efficiency. Operating room efficiency will be assessed using workflow time intervals, including pre-anesthesia preparation time, anesthesia induction time, and surgical duration.
Secondary objectives are to evaluate the association between operating room team familiarity and perioperative patient safety outcomes and healthcare utilization outcomes. These outcomes include intraoperative blood loss, postoperative intensive care unit admission, duration of intensive care unit stay, unplanned secondary surgery, unplanned hospital readmission, in-hospital mortality, length of hospital stay, and total hospitalization cost.
Additional analyses will evaluate whether operating room team composition characteristics, including team size and personnel changes during surgical procedures, influence perioperative outcomes or modify the association between team familiarity and clinical outcomes.
Primary outcome measures
- Operating Room Team Efficiency [Time frame: During the index surgical procedure, assessed up to 24 hours]
Secondary outcome measures (9)
- Estimated Intraoperative Blood Loss [Time frame: During the index surgical procedure, assessed up to 24 hours]
- Duration of Post-Anesthesia Care Unit (PACU) Stay [Time frame: From transfer from the operating room to the PACU until transfer from the PACU to the ward after the index surgery, assessed up to 12 hours]
- Postoperative ICU Admission [Time frame: From completion of the index surgical procedure until hospital discharge, assessed up to 90 days]
- Duration of ICU Stay [Time frame: From postoperative ICU admission until ICU discharge or transfer to the ward during the index hospitalization (recorded as 0 days if no ICU admission), assessed up to 90 days]
- Unplanned Secondary Surgery Within 31 Days After Surgery [Time frame: From the day of the index surgical procedure, assessed up to 31 days]
- In-Hospital Mortality [Time frame: From the day of the index surgical procedure until hospital discharge, assessed up to 90 days]
- Unplanned Hospital Readmission Within 31 Days After Surgery [Time frame: From the day of the index surgical procedure, assessed up to 31 days]
- Length of Hospital Stay [Time frame: From hospital admission until hospital discharge for the index surgical procedure, assessed up to 90 days]
- Total Hospitalization Cost [Time frame: From hospital admission until hospital discharge for the index surgical procedure, assessed up to 90 days]
Eligibility criteria
Inclusion criteria
- Adult patients (age ≥18 years) undergoing elective non-cardiac surgical procedures at Zhongda Hospital Southeast University between January 1, 2016 and March 31, 2025.
Exclusion criteria
- Cardiac surgical procedures.
- Emergency surgical procedures.
- Procedures performed under non-intubated general anesthesia or intravenous anesthesia without airway management and requiring limited multidisciplinary operating room collaboration.
- Surgical procedures with unavailable key perioperative time data, including pre-anesthesia preparation time, anesthesia induction time, or surgical duration.
- Surgical procedures with unavailable information regarding operating room team composition, including participating surgeons, anesthesiologists, or operating room nurses.
- Surgical procedures with missing data for the primary or secondary outcome measures.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Study design
- Observational model
- Cohort
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07065812 · 2025ZDSYLL172-P01