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A Study on the Equivalence and Correlation between Equivalent Minimum Alveolar Concentration (eMAC) and Bispectral Index (BIS)

A Study on the Equivalence and Correlation between Equivalent Minimum Alveolar Concentration (eMAC) and Bispectral Index (BIS)

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600120396
Enrollment
Unknown
Registered
2026-03-13
Start date
2025-07-28
Completion date
Unknown
Last updated
2026-03-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

General Anesthesia

Interventions

eMAC Group (E Group):Anesthesia depth guided primarily by eMAC score: maintain eMAC between 1.5 and 2.5
ensure eMAC > 1.5 and stable before intubation
adjust anesthesia depth intraoperatively based on eMAC
attempt awakening when eMAC decreases to 0.8, 0.6, 0.4, 0.3, 0.2. Anesthetic regimen: induction with propofol, sufentanil, rocuronium
maintenance with propofol and remifentanil
inhalational desflurane
vasopressors as needed.
BIS Group (B Group):Anesthesia depth guided primarily by BIS value: perform tracheal intubation after BIS < 60
adjust anesthesia depth intraoperatively based on BIS (maintain 40–60)
refer to BIS during awakening. Anesthetic regimen: induction with propofol, sufentanil, rocuronium

Sponsors

The People’s Hospital of Baoan Shenzhen
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1.Patients scheduled for elective laparoscopic surgery with endotracheal tube general anesthesia; 2.Patients with ASA Class I~II; 3.Patients of any gender, aged >=18 years; 4.Patients with signed informed consent forms;

Exclusion criteria

Exclusion criteria: 1.Patients enrolled in other trials; 2.Patients with cognitive impairment, psychiatric disorders, or recent (5 years, daily intake of Chinese liquor >=50ml); 5.Pregnant women; 6.Patients with a BMI >=30; 7.Patients or family members who are unwilling to participate after being informed of the study details; 8.Patients who are deemed ineligible for the trial by the investigator;

Design outcomes

Primary

MeasureTime frame
Correlation coefficient between BIS and eMAC scores;Area under the curve of systolic blood pressure fluctuation;

Secondary

MeasureTime frame
Composite score of tracheal intubation response;Time to emergence;Incidence of emergence agitation;Total intraoperative anesthetic drug dosage;Total vasopressor drug dosage;

Countries

China

Contacts

Public ContactZhang gan

The People’s Hospital of Baoan Shenzhen

2573701970@qq.com+86 755 27788311

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Mar 20, 2026