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RecruitingNot ApplicableNCT07196696

An in Vivo CT Imaging Study of GMA-Tulip, I-gel, and LMA Supreme (GLAM-II)

An in Vivo CT Imaging Study After Insertion of the LMA Supreme, I-gel, and GMA-Tulip Airway Devices Under General Anesthesia (GLAM-II)

Sponsor

Zhejiang Cancer Hospital

Enrollment

9 participants

Start Date

Oct 12, 2025

Study Type

INTERVENTIONAL

Conditions

Supraglottic Airway Device

Summary

Laryngeal masks are core devices for supraglottic airway management, and the accuracy of their anatomical position directly impacts ventilation safety and the incidence of complications. Despite their wide clinical application, gaps remain in understanding their in vivo anatomical characteristics. This study aims to evaluate the in vivo anatomical features (e.g., insertion depth, anatomical alignment, tissue compression) of three laryngeal masks (LMA Supreme, I-gel, GMA-Tulip) using CT scanning in anesthetized patients undergoing CT interventional therapy, providing anatomical evidence for optimized laryngeal mask selection and complication prevention.

Eligibility

Min Age: 18 YearsMax Age: 75 Years

Inclusion Criteria4

  • Aged 18-75 years, scheduled for CT interventional therapy;
  • Aged 18-75 years, scheduled for CT interventional therapy;
  • Body Mass Index (BMI) <30 kg/m²;
  • Good communication and cooperation, with voluntary signing of the informed consent form.

Exclusion Criteria2

  • Presence of head/neck or airway anatomical abnormalities (e.g., laryngeal cartilage malformation, Grade III tonsillar hypertrophy, tongue hypertrophy, cervical spine malformation) that may affect laryngeal mask insertion or CT imaging evaluation;
  • Current participation in other clinical studies.

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Interventions

DEVICEGMA-Tulip

Under general anesthesia, GMA-Tulip laryngeal mask is inserted following standardized protocols. CT scanning and fiberoptic laryngoscopy are performed to assess insertion depth, anatomical alignment, and tissue compression.

DEVICEI-gel

Under general anesthesia, I-gel laryngeal mask is inserted following standardized protocols. CT scanning and fiberoptic laryngoscopy are performed to assess insertion depth, anatomical alignment, and tissue compression.

DEVICELMA-Supreme insertion

Under general anesthesia, LMA Supreme laryngeal mask is inserted following standardized protocols. CT scanning and fiberoptic laryngoscopy are performed to assess insertion depth, anatomical alignment, and tissue compression.

Locations(2)

Ethics Committee of Zhejiang Cancer Hospital

Hangzhou, Zhejiang, China

Jiangling Wang

Hangzhou, Zhejiang, China

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NCT07196696