Combination COMBO Endoscopy Oropharyngeal Airway With High-Flow Nasal Cannula Oxygenation in Sedated Gastrointestinal Endoscopy for Obese Patients

NCT06812403 | Completed Phase 2

• 1 other identifier: ZJU2025C018
• Study Type: interventional
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

Hypoxia is the most common adverse event during propofol sedation for gastrointestinal endoscopy, particularly in obese patients. 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 evaluate the efficacy of the COMBO Endoscopy Oropharyngeal Airway in combination with High-Flow Nasal Cannula Oxygenation for reducing the incidence of hypoxia in obese patients undergoing gastrointestinal endoscopy under sedation.

Conditions

Hypoxia; Esophageal Cancer; Gastric Cancer; Polyp of Colon

Keywords

The COMBO Endoscopy Oropharyngeal Airway; Hypoxia; High-flow nasal cannula Oxygenation; sedation; Gastrointestinal endoscopes

Outcome Measures

Primary Outcomes (1)

• The incidence of hypoxia

  75% ≤ SpO2 \< 90% for \<60 s

  Patients will be followed for the duration of hospital stay, an expected average about 2 hours

Secondary Outcomes (2)

• The incidence of subclinical respiratory depression

  Patients will be followed for the duration of hospital stay, an expected average about 2 hours

• The incidence of severe hypoxia

  Patients will be followed for the duration of hospital stay, an expected average about 2 hours

Other Outcomes (1)

• The incidence of other adverse events

  Patients will be followed for the duration of hospital stay, an expected average about 2 hours

Study Arms (1)

the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation

EXPERIMENTAL

In this group, patients use the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation.

Device: the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation

Interventions

the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation DEVICE

Using the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation in Sedated Gastrointestinal Endoscopy for Obese Patients

the COMBO Endoscopy Oropharyngeal Airway with High-Flow Nasal Cannula Oxygenation

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age 18≤ Age ≤70.
• BMI ≥ 35 kg/m².
• The ASA classification ranges from I to III.
• Patients have signed the informed consent form.
• Patients undergoing gastroendoscopy and colonoscopy procedure.
• The estimated duration of the procedure does not exceed 45 minutes.

You may not qualify if:

• 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\<35 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.

Sponsors & Collaborators

• Zhejiang University: lead

Study Sites (1)

The First Affiliated Hospital, Zhejiang University School of Medicine

Hangzhou, Zhejiang, 310000, China

Location

MeSH Terms

Conditions

Hypoxia; Esophageal Neoplasms; Stomach Neoplasms; Colonic Polyps

Condition Hierarchy (Ancestors)

Signs and Symptoms, Respiratory; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Gastrointestinal Neoplasms; Digestive System Neoplasms; Neoplasms by Site; Neoplasms; Head and Neck Neoplasms; Digestive System Diseases; Esophageal Diseases; Gastrointestinal Diseases; Stomach Diseases; Intestinal Polyps; Polyps; Pathological Conditions, Anatomical

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Chair of the Department of Anesthesiology

Model Details: Combined use of the COMBO Endoscopy Oropharyngeal Airway with high-flow nasal Cannula Oxygenation in morbidly obese patients undergoing endoscopy

Study Record Dates

• First Submitted: February 1, 2025
• First Posted: February 6, 2025
• Study Start: February 4, 2025
• Primary Completion: June 4, 2025
• Study Completion: June 4, 2025
• Last Updated: June 25, 2025

Record last verified: 2025-03

Data Sharing

• IPD Sharing: Will not share

Locations

CN (1)