Evaluating the use of dexmedetomidine for laryngoscopic microsurgery without intubation

Evaluation the Efficiency of Intravenous Dexmedetomidine Under Nasal Humidification Rapid Ventilation Device Without Intubation in Laryngoscope Microsurgery

NA · Kaohsiung Veterans General Hospital. · NCT05581485

This study is testing whether using a special medication to help people breathe on their own during laryngoscopic microsurgery can be safer and more effective than traditional intubated anesthesia.

Quick facts

PhaseNA
Study typeInterventional
Enrollment60 (estimated)
Ages20 Years to 80 Years
SexAll
SponsorKaohsiung Veterans General Hospital. (other)
Locations1 site (Kaohsiung)
Trial IDNCT05581485 on ClinicalTrials.gov

What this trial studies

This clinical trial compares the effectiveness of laryngoscopic microsurgery (LMS) performed under intubated general anesthesia versus non-intubated anesthesia using high-flow nasal oxygen (HFNO). It aims to assess the safety and feasibility of LMS with non-intubated anesthesia, particularly focusing on the administration of dexmedetomidine to maintain spontaneous breathing. The study will enroll patients aged 20 to 80 who require LMS, dividing them into three groups based on the type of anesthesia received. The goal is to determine if non-intubated anesthesia can provide a clearer surgical field and reduce complications associated with intubation.

Who should consider this trial

Good fit: Ideal candidates are patients aged 20 to 80 years undergoing laryngoscopic microsurgery with an ASA classification of I to III.

Not a fit: Patients with drug dependence, significant organ dysfunction, or those requiring emergency surgery may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance surgical safety and patient comfort during laryngoscopic microsurgery.

How similar studies have performed: While non-intubated anesthesia has been explored in other contexts, the specific combination of dexmedetomidine and LMS under HFNO is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects are between 20-80 years old.
* Patients undergoing laryngoscope microsurgery.
* Anesthesiologists rated ASA as between I and III.

Exclusion Criteria:

* Having drug dependence and drinking habits.
* Abnormal heart, liver and kidney function.
* Allergic reactions to narcotic drugs.
* Emergency surgery.
* pregnancy.
* Refuse to participate.
* BMI ≥ 40 kg/m2.

Where this trial is running

Kaohsiung

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Dexmedetomidine, Laryngomicrosurgery, Nonintubation, spontaneous breathing, dexmedetomidine

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.