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ED50 of alfentanil for tracheal intubation in obese patient.

ED50 of alfentanil for tracheal intubation in obese patient.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2500107557
Enrollment
Unknown
Registered
2025-08-14
Start date
2025-08-15
Completion date
Unknown
Last updated
2025-08-18

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

Conditions

Tracheal intubation stress response

Interventions

Experimental group:According to the BCD method, different doses of alfentanil will be used to suppress the response to tracheal intubation. It is expected that there will be 6 groups, with doses of 5

Sponsors

Zhongshan Hospital (Xiamen Branch), Fudan University, Xiamen
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: (1) Age 18–65 years, BMI >= 30 kg/m²; (2) ASA (American Society of Anesthesiologists,ASA) physical status classification I–III; (3) Willing to participate and sign the informed consent form; (4) Elective surgery.

Exclusion criteria

Exclusion criteria: (1) History of allergy to opioid drugs or severe allergy to other medications; (2) History of opioid abuse, long-term use of psychotropic drugs, or participation in other drug trials within the past year; (3) Decompensated liver or kidney function; (4) Patients who failed intubation within 1 minute or required a second intubation attempt; (5) Patients undergoing surgery involving the upper respiratory tract or lungs.

Design outcomes

Primary

MeasureTime frame
Heart rate;Blood pressure;

Countries

China

Contacts

Public ContactLiu Jie

Zhongshan Hospital (Xiamen Branch), Fudan University, Xiamen

iamdr13@163.com+86 130 7588 9390

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026