Hyomental distance measured by ultrasound for size selection of laryngeal mask airway in female patients

Study of morphological changes of upper airway after general anesthesia and correlation this changes to difficult airway

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100046553

Enrollment

Unknown

Registered

2021-05-21

Start date

2021-06-01

Completion date

Unknown

Last updated

2022-01-04

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

Conditions

none

Interventions

Group one:Hyomental distance for size selection of laryngeal mask airway

Group two:weight for size selection of laryngeal mask airway

Eligibility

Sex/Gender

All

Age

18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Patients in the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine who require intubation and general anesthesia for elective surgery, aged 18 to 65 years; 2. ASA grade 1 to 2, good health.

Exclusion criteria

Exclusion criteria: 1. Have a clear history of tract disease in persons with difficult air; 2. Preoperative Hct<35%; preoperative Hb<110g/L, severe liver and kidney dysfunction; 3. With severe cardiopulmonary disease; those with abnormal blood coagulation function; those who refuse to take the measurement.

Design outcomes

Primary

Measure	Time frame
correct rate of LMA selection;	—

Countries

China

Contacts

Public ContactMa Wuhua

The First Affiliated Hospital of Guangzhou University of Chinese Medicine

tuesdaymorninggz@126.com+86 13318860680

Outcome results

None listed

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