Clinical Application of Adjustable Video Laryngeal Mask Airway in Laparoscopic Surgery for Overweight and Obese Patients

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2500115233

Enrollment

Unknown

Registered

2025-12-24

Start date

2025-12-25

Completion date

Unknown

Last updated

2026-01-05

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

Conditions

Airway management for patients undergoing laparoscopic surgery

Interventions

Adjustable Video LMA group:Intraoperative airway management with the use of adjustable video laryngeal mask airway

Standard LMA group:Intraoperative airway management with the use of standard laryngeal mask airway

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. Age 18~70 years old; 2. Body Mass Index (BMI) >=25 kg/m²; 3. ASA grade 1~3; 4. Scheduled to undergo laparoscopic surgery under general anesthesia; 5. Intact preoperative cognitive function, no communication barriers, and educational level sufficient to complete the preoperative difficult airway assessment; 6. Voluntary signing of the informed consent form.

Exclusion criteria

Exclusion criteria: 1. Upper respiratory tract infection within one week prior to surgery; 2. Severely restricted interincisor distance; 3. Concurrent severe obstructive sleep apnea-hypopnea syndrome (OSAHS); 4. High risk of reflux and aspiration; 5. Severe pharyngeal inflammation, edema, hematoma, hemorrhage, abscess, or tumor; 6. Patients unable to undergo normal communication and complete airway assessment due to visual or auditory impairments.

Design outcomes

Primary

Measure	Time frame
oropharyngeal leak pressure;Laryngeal mask airway placement accuracy and endotracheal visualization grading score(EVGS);	—

Secondary

Measure	Time frame
Modified Aldrete score at 30 minutes after removal of the laryngeal mask airway, postoperative complications, and QoR-15 scale;Laryngeal mask airway insertion time, first-attempt success rate, number of insertion attempts, finger-guided insertion rate were compared between the two groups;Peak airway pressure, end-tidal carbon dioxide partial pressure, and whether laryngeal mask airway displacement with leakage has occurred were compared between the two groups;	—

Measure

Time frame

Modified Aldrete score at 30 minutes after removal of the laryngeal mask airway, postoperative complications, and QoR-15 scale;Laryngeal mask airway insertion time, first-attempt success rate, number of insertion attempts, finger-guided insertion rate were compared between the two groups;Peak airway pressure, end-tidal carbon dioxide partial pressure, and whether laryngeal mask airway displacement with leakage has occurred were compared between the two groups;

—

Countries

China

Contacts

Public ContactDezhao Liu

Fifth Affiliated Hospital, Sun Yat-Sen University

sumsldz@163.com+86 153 6088 4591

Outcome results

None listed

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