CT imaging comparison of GMA-Tulip, I-gel, and LMA Supreme laryngeal masks

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults aged 18–75 (ASA I–II, BMI <30) scheduled for CT interventional therapy will be randomly assigned to receive one of three supraglottic airway devices—LMA Supreme, I-gel, or GMA-Tulip—inserted by experienced anesthesiologists. After standardized induction of general anesthesia and muscle relaxation, each device will be placed and in vivo neck CT imaging will be performed to record insertion depth, anatomical alignment, and local tissue compression. Investigators will compare device position and relationships to adjacent structures on CT to identify consistent misalignments or compression patterns. Findings are intended to provide anatomical evidence to help optimize laryngeal mask choice and reduce placement-related ventilation problems and complications.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* 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 Criteria:

* 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.

Where it's running

• Ethics Committee of Zhejiang Cancer Hospital
  Hangzhou, Zhejiang, China Recruiting
• Jiangling Wang
  Hangzhou, Zhejiang, China Recruiting

Study contacts

• Principal investigator: Jiangling Wang, Dr — Zhejiang Cancer Hospital
• Study coordinator: Xiaochun Jin, M.D
• Email: ec@zjcc.org.cn
• Phone: +86 571-88122564

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.