Skip to content

COMBO Endoscopy Oropharyngeal Airway in Sedated Fiberoptic Bronchoscopy for Patients: A Simon Two-Stage Trial

COMBO Endoscopy Oropharyngeal Airway in Sedated Fiberoptic Bronchoscopy for Patients: A Simon Two-Stage Trial

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07063290
Enrollment
104
Registered
2025-07-14
Start date
2025-06-23
Completion date
2025-09-18
Last updated
2026-02-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bronchiectasis, Endotracheal Tumour, Pulmonary Infection, Pulmonary Nodule

Keywords

the COMBO Endoscopy Oropharyngeal Airway, fiberoptic bronchoscopy, hypoxia

Brief summary

Hypoxia represents the prevailing adverse occurrence during the sedation of patients undergoing fiberoptic bronchoscopy with propofol. 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 our randomized study is to assess the efficacy and safety of the COMBO Endoscopy Oropharyngeal Airway reduce the incidence of hypoxia on patients undergoing fiberoptic bronchoscopy under propofol sedation.

Interventions

Using the COMBO Endoscopy Oropharyngeal Airway for oxygenation.

Sponsors

Zhejiang University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Intervention model description

The COMBO Endoscopy Oropharyngeal Airway integrates a bite block, capnography monitoring, oxygenation support, and an innovative oropharyngeal airway design. The COMBO device is a novel airway management device with integrated capnography monitoring and dual oxygenation support. It was developed to overcome persistent challenges in maintaining airway patency and oxygenation during bronchoscopy under sedation.

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Age 18≤ Age ≤70.·Patients undergoing fiberoptic bronchoscopy. * Patients have signed the informed consent form. * The ASA classification ranges from I to II. * The estimated duration of the procedure does not exceed 45 minutes.

Exclusion criteria

* Patients with contraindications to oropharyngeal airway ventilation, such as coagulation disorders, predisposition to oral/nasal bleeding, mucosal damage, or anatomical obstructions hindering oropharyngeal airway placement. * Patients diagnosed with acute exacerbation of chronic obstructive pulmonary disease (COPD) or those currently suffering from other acute/chronic pulmonary conditions requiring long-term or intermittent oxygen therapy. * Patients with preoperative SpO₂ \< 95% while breathing air. * Patients with BMI \< 18.5 or BMI \> 30. * Patients with upper respiratory tract infections (oral, nasal, or pharyngeal). * Patients at risk of aspiration. * Patients with fever (core temperature \> 37.5°C). * Patients with severe cardiac insufficiency (\< 4 METs). * Patients with severe renal insufficiency requiring preoperative dialysis. * Patients with a confirmed diagnosis of hepatic insufficiency. * Patients with increased intracranial pressure. * Patients with hypersensitivity to sedatives like propofol or medical equipment such as adhesive tape. * Patients with a history of drug abuse and/or alcoholism within the two years preceding the commencement of the screening period (defined as drinking 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. * Patients currently participating in other clinical trials. * Patients deemed ineligible for participation in this clinical trial by the researchers.

Design outcomes

Primary

MeasureTime frame
The incidence of hypoxia(75% ≤ SpO2 < 90% for <60 s)Patients are continuously monitored from the beginning of anesthesia induction until exiting the PACU (Post-Anesthesia Care Unit).

Secondary

MeasureTime frame
The incidence of sub-clinical respiratory depression(90% ≤ SpO2 < 95%)Patients are continuously monitored from the beginning of anesthesia induction until exiting the PACU (Post-Anesthesia Care Unit).
The incidence of severe hypoxia(SpO2 < 75% or 75% ≤ SpO2 < 90% for ≥60 s)Patients are continuously monitored from the beginning of anesthesia induction until exiting the PACU (Post-Anesthesia Care Unit).

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 25, 2026