CClinicalTrials.gg
Not yet recruitingNCT07721038Updated Jul 22, 2026

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

An observational study in Brain Health, sponsored by Guangzhou Medical University. Not yet recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-07-22.

Sponsored by Guangzhou Medical University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
400
Ages
18 Years to 75 Years
Sex
All
01

Study summary

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.

02

Conditions studied

  • Brain Health

Keywords

  • Tubeless anesthesia
  • double-lumen bronchial intubation
  • brain health
03

In context

Lead sponsor

Guangzhou Medical University is the lead sponsor of 38 studies on the registry; 20 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
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

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

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;
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
400 participants (estimated)
Target follow-up
6 Months
Patient registry
Yes
Biospecimen retention
Samples without dna

Groups and cohorts

  • 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

06

What researchers measure

Primary outcomes

  1. Concentration of cognitive function biomarkers in the serum samples of 400 patients

    At time points T1, T2, and T3, 5 ml of peripheral venous blood was collected to test the biological indicators of postoperative cognitive function.

    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)

  2. Concentrations of HPA axis-related indicators in the serum samples of 400 patients

    At the TI-T2 time point, 5 ml of peripheral venous blood was collected for the detection of HPA axis-related indicators.

    Time frame: Before the start of the surgery (T1), at the end of the surgery (T2)

  3. The concentrations of laboratory test indicators in the serum samples of 400 patients

    Record the laboratory test indicators at time points T1 and T3

    Time frame: Before the start of the surgery (T1), and on the first day after the surgery (T3)

Secondary outcomes

  1. Anesthesia Record Form

    Record the vital signs at the T2 time point

    Time frame: at the end of the surgery (T2)

  2. Case information system collection

    Record the pulmonary function, chest X-ray or chest CT at time points T1 and T3

    Time frame: Before the start of the surgery (T1), and on the first day after the surgery (T3)

  3. Anesthesia Record Form

    Record the intraoperative conditions

    Time frame: During the operation

  4. Postoperative follow-up records

    Record the time of chest tube removal after surgery

    Time frame: through study completion, an average of 1 year

  5. Postoperative follow-up records

    the usage of postoperative analgesic drugs

    Time frame: through study completion, an average of 1 year

  6. Postoperative follow-up records

    the postoperative hospital stay

    Time frame: through study completion, an average of 1 year

  7. Postoperative follow-up records

    the total hospitalization cost

    Time frame: through study completion, an average of 1 year

Other outcomes

  1. Postoperative follow-up records

    Record the occurrence of adverse events during the perioperative period

    Time frame: through study completion, an average of 1 year

07

Study locations

1 site
  • the First Affiliated Hospital of Guangzhou Medical University
    Guangzhou, Guangdong 510120, China
08

References and documents

Individual participant data

Plan to share: Yes — Patient clinical data

Supporting information: Csr

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07721038
Lead sponsor
Guangzhou Medical University
Responsible party
Fengfa Yang (Principal Investigator, Guangzhou Medical University) — Principal investigator
First posted
Jul 22, 2026
Start date
Jul 20, 2026 (estimated)
Primary completion
Dec 31, 2027 (estimated)
Completion
Dec 31, 2028 (estimated)
Last update
Jul 22, 2026

Study contacts

Lan Lan, PHD
Contact
lanlan@gzhmu.edu.cn
+8602083062566
Fengfa Yang, BS
Contact
yff18312377134@163.com
+8602083062566
Lan Lan, PHD
study director · The First Affiliated Hospital of Guangzhou Medical University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion