A Prospective Clinical Study Observed the Effects of Tubeless Anesthesia Method That Preserves Spontaneous Breathing and the Double-lumen Bronchial Intubation on the Brain Health During the Perioperative Period

July 19, 2026 updated by: Fengfa Yang, Guangzhou Medical University

Tubeless Anesthesia With Preserved Spontaneous Breathing and the Construction of a Perioperative Brain Health Safety System for Thoracic Surgery Patients Study 2: A Prospective Clinical Study Observing the Impact of Two Anesthesia Techniques-Tubeless With Preserved Spontaneous Breathing Versus Double-Lumen Endotracheal Intubation-on Perioperative Brain Health

This project conducts a prospective cohort study. By using multiple questionnaire survey methods such as the Pittsburgh Sleep Quality Index (PSQI) electronic wristband, QOR15, Pain Catastrophizing Scale (PCS), European Five-Dimensional Health Scale (EQ-5D), Revised American Pain Society Patient Follow-up Questionnaire (APS-POQ-R), Mini-Mental State Examination (MMSE), as well as perioperative stress and related indicators, hypothalamic-pituitary-adrenal axis (HPA) endocrine indicators, sublingual microcirculation, electroencephalogram, etc., comprehensive assessment is made of the correlations between the two different anesthesia methods of Tubeless retention of spontaneous breathing and double-lumen bronchial intubation and postoperative sleep, chronic pain and cognitive function, to construct a perioperative brain health safety system to improve prognosis; at the same time, optimize the perioperative sedation and analgesia plan and promote the postoperative brain health recovery of patients.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
400

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510120
        • The First Affiliated Hospital of Guangzhou Medical University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients who underwent elective non-anatomic partial lung resection surgery at the First Affiliated Hospital of Guangzhou Medical University

Description

Inclusion Criteria:

  • Patient age: 18 - 75 years old
  • Patients meeting the standards of the American Society of Anesthesiologists (ASA) I-III grade and the New York Heart Association (NYHA) I-II class
  • Body Mass Index (BMI) < 30 kg/m2
  • Intraoperative blood loss less than 300 ml
  • No severe cardiac or pulmonary dysfunction [first-second forced vital capacity (FEV1%) predicted value] > 50%, ejection fraction (EF) > 50%
  • No contraindications related to paravertebral nerve block and intercostal nerve block
  • Able to sign the informed consent form and possess communication, reading and writing abilities
  • Postoperative hospital stay of at least one day
  • No preoperative sleep disorders, no cognitive dysfunction (PSQI ≤ 10 points, PCS ≤ 38 points, MMSE > 27 points)

Exclusion Criteria:

  • Already diagnosed with a mental disorder or had a preoperative Mini-Mental State Examination (MMSE) score of less than 27
  • History of opioid abuse
  • Patients who were admitted to the ICU after surgery
  • Have severe cardiovascular, respiratory diseases
  • Experienced critical rescue during or after the surgery
  • Complicated with coagulation dysfunction, severe hypoxia or hypercapnia, or liver and kidney dysfunction
  • Difficult airway management
  • Changed anesthetic agent or surgical plan
  • Severe lacunar cerebral infarction, ischemic stroke or other neurological diseases
  • Changed anesthetic agent or surgical plan during the surgery;

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
tubeless group
Patients undergoing elective non-anatomic partial lung resection surgery using the Tubeless technique for maintaining spontaneous breathing anesthesia
double-lumen bronchial intubation group
Patients undergoing elective non-anatomic lung segmentectomy surgery using the double-lumen bronchial tube anesthesia method

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Concentration of cognitive function biomarkers in the serum samples of 400 patients
Time Frame: Before the start of the surgery (T1), at the end of the surgery (T2), and on the first day after the surgery (T3)
At time points T1, T2, and T3, 5 ml of peripheral venous blood was collected to test the biological indicators of postoperative cognitive function.
Before the start of the surgery (T1), at the end of the surgery (T2), and on the first day after the surgery (T3)
Concentrations of HPA axis-related indicators in the serum samples of 400 patients
Time Frame: Before the start of the surgery (T1), at the end of the surgery (T2)
At the TI-T2 time point, 5 ml of peripheral venous blood was collected for the detection of HPA axis-related indicators.
Before the start of the surgery (T1), at the end of the surgery (T2)
The concentrations of laboratory test indicators in the serum samples of 400 patients
Time Frame: Before the start of the surgery (T1), and on the first day after the surgery (T3)
Record the laboratory test indicators at time points T1 and T3
Before the start of the surgery (T1), and on the first day after the surgery (T3)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Anesthesia Record Form
Time Frame: at the end of the surgery (T2)
Record the vital signs at the T2 time point
at the end of the surgery (T2)
Case information system collection
Time Frame: Before the start of the surgery (T1), and on the first day after the surgery (T3)
Record the pulmonary function, chest X-ray or chest CT at time points T1 and T3
Before the start of the surgery (T1), and on the first day after the surgery (T3)
Anesthesia Record Form
Time Frame: During the operation
Record the intraoperative conditions
During the operation
Postoperative follow-up records
Time Frame: through study completion, an average of 1 year
Record the time of chest tube removal after surgery
through study completion, an average of 1 year
Postoperative follow-up records
Time Frame: through study completion, an average of 1 year
the usage of postoperative analgesic drugs
through study completion, an average of 1 year
Postoperative follow-up records
Time Frame: through study completion, an average of 1 year
the postoperative hospital stay
through study completion, an average of 1 year
Postoperative follow-up records
Time Frame: through study completion, an average of 1 year
the total hospitalization cost
through study completion, an average of 1 year

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Postoperative follow-up records
Time Frame: through study completion, an average of 1 year
Record the occurrence of adverse events during the perioperative period
through study completion, an average of 1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Guangzhou Medical University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Lan Lan, PHD, The First Affiliated Hospital of Guangzhou Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 20, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 13, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 19, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 22, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 22, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 19, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ES-2025-216-02
  • GMUCR2025-02011 (Other Grant/Funding Number: Guangzhou Medical University)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Patient clinical data

IPD Sharing Access Criteria

The data can be obtained by email from Lan Lan (Email: lanlan@gzhmu.edu.cn) for clinical requirements.

IPD Sharing Supporting Information Type

  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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