The application of ultrasound-guided superior laryngeal nerve block used for alleviating laryngeal mask insertion induced pharyngeal pain

superior laryngeal nerve block is used for alleviating of pharyngeal pain induced by laryngeal mask insertion.

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000037974

Enrollment

Unknown

Registered

2020-09-08

Start date

2020-09-15

Completion date

Unknown

Last updated

2022-01-24

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

Conditions

Laproscopic operation

Interventions

tetracaine syrup:LM coverd by tetracaine syrup

superior laryngeal nerve block:superior laryngeal nerve block beforeLM insertion

Eligibility

Sex/Gender

Female

Age

20 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. ASA grade I- II, aged 20-60 years; 2. General anesthesia after LMA insertion; 3. Operation time > 1 hour and < 4 hours; 4. Laparoscopic non malignant gynecological surgery, such as partial hysterectomy, myomectomy, ovarian cyst enucleation, etc.

Exclusion criteria

Exclusion criteria: 1. Patients with emergency operation; 2. Patients with massive hemorrhage during operation; 3. The patient had hoarseness or sore throat during hospitalization; 4. Patients with liver and kidney dysfunction in the past.

Design outcomes

Primary

Measure	Time frame
pharyngeal pain score on 6 hour postoperatively ;	—

Secondary

Measure	Time frame
satisfactory score;side effect;Quadrant Scaling to evaluate postoperative pharyngeal pain;pharyngeal spasm;acoustic analysis after operation;	—

Countries

China

Contacts

Public ContactJiehao Sun

Department of Anesthesiology, the First Affiliated Hospital of Wenzhou Medical University

sun_jiehao@126.com+86 577 55590999

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 10, 2026