The protective effects of butorphanol on pulmonary function of obese patients undergoing laparoscopic bariatric surgery: a randomized controlled trial.

The protective effects of butorphanol on pulmonary function of obese patients undergoing laparoscopic bariatric surgery

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR1900021828

Enrollment

Unknown

Registered

2019-03-11

Start date

2019-06-01

Completion date

Unknown

Last updated

2020-05-04

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

Conditions

lung protection

Interventions

butorphanol group:intravenous butorphanol

control group:intravenous saline

Eligibility

Sex/Gender

All

Age

18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Patients aged 18-65 years with BMI >= 30kg/m2 and American Society of Anesthesiologists (ASA) classification II or III undergoing elective laparoscopic bariatric surgery.

Exclusion criteria

Exclusion criteria: 1. Pregnancy or breastfeeding; 2. Liver and kidney disease; 3. Hb < 90g/L; 4. Preoperative severe impairment of respiratory function; 5. Pulmonary hypertension; 6. Subjects has contraindication for butorphanol.

Design outcomes

Primary

Measure	Time frame
a/A ratio;	—

Secondary

Measure	Time frame
CC16 protein;	—

Countries

China

Contacts

Public ContactLiu Su

Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University

150040009@qq.com+86 18118309692

Outcome results

None listed

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