Operating Room Team FamiliarityNCT07065812
Operating Room Team Familiarity and Perioperative Outcomes in Non-Cardiac Surgery
An observational study of Operating Room Team Familiarity, run by Zhongda Hospital at 1 site in China.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Operating Room Team Familiarity
- How many people
- 69,325 participants
- Where
- 1 siteChina
- Study dates
- 7 Jul 2025to 30 Jan 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Adult, Older adult
Study population: The study population includes adult patients who underwent elective non-cardiac surgical procedures at Zhongda Hospital Southeast University between January 1, 2016 and March 31, 2025.
Who may be able to join
- Adult patients (age ≥18 years) undergoing elective non-cardiac surgical procedures at Zhongda Hospital Southeast University between January 1, 2016 and March 31, 2025.
Who cannot join
- 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.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Impact of Operating Room Team Familiarity on Perioperative Efficiency and Patient Safety Outcomes in Non-Cardiac Surgery
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.
Read more
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.
Read the 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.
- Conditions
- Operating Room Team Familiarity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Non-Cardiac Surgery Cohort | Adult patients undergoing elective non-cardiac surgery. Operating room team familiarity will be quantified using the Intraoperative Familiarity Score (IFS), and its association with perioperative outcomes will be evaluated. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Operating Room Team Efficiency
Operating room team efficiency is assessed by three workflow time intervals:
- pre-anesthesia preparation time, defined as the interval from patient arrival in the operating room to anesthesia initiation;
- anesthesia induction time, defined as the interval from anesthesia initiation to surgery start;
- surgical duration, defined as the interval from surgery start to surgery completion.
All time intervals are measured in minutes based on timestamps recorded in the anesthesia information management system.
Measured: During the index surgical procedure, assessed up to 24 hours
Secondary outcomes (9)
Estimated Intraoperative Blood Loss
Total estimated blood loss during surgery, recorded in milliliters (mL) from anesthesia and surgical records.
Measured: During the index surgical procedure, assessed up to 24 hours
Duration of Post-Anesthesia Care Unit (PACU) Stay
The duration of PACU stay, defined as the time interval from admission to discharge from the post-anesthesia care unit, recorded in minutes.
Measured: 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
Whether the participant was admitted to the intensive care unit after the index surgery (yes/no), including direct transfer from the operating room to the ICU without PACU recovery, identified from postoperative medical records.
Measured: From completion of the index surgical procedure until hospital discharge, assessed up to 90 days
Duration of ICU Stay
Length of postoperative ICU stay in days. Participants not admitted to the ICU are recorded as 0 days; for those admitted (including direct transfer from the operating room to the ICU), duration is measured from ICU admission until ICU discharge or transfer to the ward.
Measured: 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
Occurrence of an unplanned secondary surgical procedure within 31 days after the index surgery, identified from hospital surgical records.
Measured: From the day of the index surgical procedure, assessed up to 31 days
In-Hospital Mortality
Death occurring during the index hospitalization after surgery, identified from hospital medical records.
Measured: From the day of the index surgical procedure until hospital discharge, assessed up to 90 days
Unplanned Hospital Readmission Within 31 Days After Surgery
Occurrence of an unplanned hospital readmission within 31 days after the index surgical procedure, defined as an unexpected inpatient admission after discharge from the index hospitalization and identified from hospital medical records.
Measured: From the day of the index surgical procedure, assessed up to 31 days
Length of Hospital Stay
Total duration of hospitalization, measured in days, from hospital admission to discharge after the index surgical procedure.
Measured: From hospital admission until hospital discharge for the index surgical procedure, assessed up to 90 days
Total Hospitalization Cost
Total hospitalization expenses associated with the index surgical procedure, recorded in Chinese Yuan (CNY) based on hospital billing records.
Measured: From hospital admission until hospital discharge for the index surgical procedure, assessed up to 90 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Jul 2025
- Study start7 Jul 2025
- Primary completion30 Jan 2026
- Study completion30 Jan 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Operating Room Team FamiliarityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 69,325 participants (actual)
Sponsor and investigators
- Lead sponsor
- Zhongda Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Peng Zhendan, Zhongda Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07065812
- Sponsor's protocol ID
- 2025ZDSYLL172-P01
- Status last verified
- Aug 2026
- First submitted
- 6 Jun 2025
- Last updated
- 25 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Impact of Operating Room Team Familiarity on Perioperative Efficiency and Patient Safety Outcomes in Non-Cardiac Surgery
- ClinicalTrials.gov ID
- NCT07065812
- Acronym / sponsor ID
- 2025ZDSYLL172-P01
- Conditions
- Operating Room Team Familiarity
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 69,325 participants (actual)
- Lead sponsor
- Zhongda HospitalUniversity, hospital or other
- Study start
- 7 Jul 2025 (actual)
- Primary completion
- 30 Jan 2026 (actual)
- Study completion
- 30 Jan 2026 (actual)
- First posted
- 15 Jul 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Non-Cardiac Surgery Cohort | – | –Adult patients undergoing elective non-cardiac surgery. Operating room team familiarity will be quantified using the Intraoperative Familiarity Score (IFS), and its association with perioperative outcomes will be evaluated. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Age groups
- Adult, Older adult
- Study population
- The study population includes adult patients who underwent elective non-cardiac surgical procedures at Zhongda Hospital Southeast University between January 1, 2016 and March 31, 2025.
Key inclusion criteria (1 listed)
- Adult patients (age ≥18 years) undergoing elective non-cardiac surgical procedures at Zhongda Hospital Southeast University between January 1, 2016 and March 31, 2025.
Key exclusion criteria (6 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Operating Room Team Efficiency
Time frame: During the index surgical procedure, assessed up to 24 hours
Operating room team efficiency is assessed by three workflow time intervals: 1. pre-anesthesia preparation time, defined as the interval from patient arrival in the operating room to anesthesia initiation; 2. anesthesia induction time, defined as the interval from anesthesia initiation to surgery start; 3. surgical duration, defined as the interval from surgery start to surgery completion. All time intervals are measured in minutes based on timestamps recorded in the anesthesia information management system.
9 secondary outcomes
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
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Aug 2026.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Operating Room Team Familiarity, run by Zhongda Hospital at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Operating Room Team Efficiency (time frame: During the index surgical procedure, assessed up to 24 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Aug 2026.