COMBO Endoscopy Oropharyngeal Airway Reduces Hypoxia During Sedated Gastrointestinal Endoscopy in Obese Patients: A Multicenter, Randomized, Controlled Clinical Trial

NCT ID: NCT06796764

Last Updated: 2025-09-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

580 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-11

Study Completion Date

2025-12-04

Brief Summary

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Hypoxia represents the prevailing adverse occurrence during the sedation of patients undergoing gastrointestinal endoscopy with propofol. This is particularly true for obese patients, who have a higher incidence of hypoxia. A recent innovation in this domain is the COMBO Endoscopy Oropharyngeal Airway-a multifaceted device that encompasses capnography monitoring, bite block , oxygenation support, and oropharyngeal airway management. This device has been purposefully designed to cater to the unique requirements of endoscopic procedures. The principal objective of this study is to assess the efficacy and safety of the COMBO Endoscopy Oropharyngeal Airway in reducing the incidence of hypoxia in obese patients undergoing gastrointestinal endoscopy under sedation.

Detailed Description

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Conditions

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Hypoxia Esophageal Cancer Gastric Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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the COMBO Endoscopy Oropharyngeal Airway Group

In this group, patients use the COMBO Endoscopy Oropharyngeal Airway for oxygenation.

Group Type EXPERIMENTAL

the COMBO Endoscopy Oropharyngeal Airway Group

Intervention Type DEVICE

Using the COMBO Endoscopy Oropharyngeal Airway for oxygenation.

Regular Nasal Cannula Group

In this group, patients use the regular nasal cannula for oxygenation.

Group Type ACTIVE_COMPARATOR

Regular Nasal Cannula

Intervention Type DEVICE

Using regular nasal cannula for oxygenation.

Interventions

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the COMBO Endoscopy Oropharyngeal Airway Group

Using the COMBO Endoscopy Oropharyngeal Airway for oxygenation.

Intervention Type DEVICE

Regular Nasal Cannula

Using regular nasal cannula for oxygenation.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Age 18≤ Age ≤70.
* BMI ≥ 28 kg/m².
* The ASA classification ranges from I to II.
* Patients have signed the informed consent form.
* Patients undergoing gastroendoscopy and colonoscopy procedure.
* The estimated duration of the procedure does not exceed 45 minutes.

Exclusion Criteria

* Patients who exhibit contraindications to oropharyngeal airway ventilation, such as coagulation disorders, a predisposition to oral and nasal bleeding, mucosal damage, or anatomical constraints impeding oropharyngeal channel placement.
* Severe cardiac insufficiency, defined as a maximal exercise capacity of less than 4 metabolic equivalents (METs).
* Profound renal insufficiency necessitating preoperative dialysis.
* A confirmed severe liver dysfunction.
* Patients diagnosed with chronic obstructive pulmonary disease (COPD) or those presently experiencing other acute and chronic pulmonary conditions necessitating prolonged or intermittent oxygen therapy.
* Elevated intracranial pressure.
* Upper respiratory tract infections, encompassing the oral, nasal, and pharyngeal regions.
* Fever, defined as a core body temperature exceeding 37.5 degrees Celsius.
* Pregnancy or lactation.
* Hypersensitivity reactions to sedatives like propofol or medical equipment such as adhesive tape.
* Urgent surgical intervention.
* Polytrauma.
* Peripheral oxygen saturation (SpO2) levels below 95% while breathing room air preoperatively.
* BMI\<28 kg/m².
* Patients with a documented history of substance abuse, specifically drugs and/or alcohol, within the two years preceding the commencement of the screening period. Substance abuse in this context is defined as consuming more than three standard alcoholic beverages daily, roughly equivalent to 10g of alcohol or 50g of Chinese Baijiu.
* Patients with a history of mental and neurological disorders, including but not limited to depression, severe central nervous system depression, Parkinson's disease, basal ganglia lesions, schizophrenia, epilepsy, Alzheimer's disease, and myasthenia gravis.
* Presently engaged in concurrent participation in additional clinical trials.
* Patients considered ineligible by researchers for inclusion in this clinical trial.
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zhejiang University

OTHER

Sponsor Role lead

Responsible Party

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Diansan Su

Chair of the Department of Anesthesiology

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The First Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, China

Site Status RECRUITING

The Fourth Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, China

Site Status RECRUITING

Zhejiang Cancer hospital

Hangzhou, Zhejiang, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Diansan Su, Chief Physician

Role: CONTACT

+8618616514088

Mingxia Xu

Role: CONTACT

+8613516713435

Facility Contacts

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Diansan Su, Dr

Role: primary

+8618616514088

Jian Guo, Dr

Role: primary

+8613858116560

Zihan Mu, Dr

Role: primary

+8617280781160

Other Identifiers

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ZJU2025B0065

Identifier Type: -

Identifier Source: org_study_id

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