High-flow Nasal Oxygen Therapy for Advanced Endoscopy in High-risk Patients.
NCT ID: NCT06610461
Last Updated: 2025-10-07
Study Results
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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COMPLETED
NA
180 participants
INTERVENTIONAL
2024-09-25
2025-09-12
Brief Summary
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This study aims to investigate the hypothesis if the application of high-flow nasal oxygen (HFNO) during high-risk gastroscopy reduces the risk of blood oxygen levels to drop below a defined threshold. Enrolled patients will be randomly assigned to either the control group, receiving standard care during endoscopy, or the intervention group, receiving HFNO therapy during the procedure. Throughout the intervention, vital parameters will be recorded. Care providers will be asked to answer a questionnaire that specifically evaluates the effect of HFNO on patient safety and the procedure.
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Detailed Description
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The randomization schema is developed by an unblinded statistician using SAS (Statistical system) and uploaded to the REDCap randomization module, enabling delegated team members to generate sequential allocations for enrolled subjects.
Patients assigned to the control group will receive supplemental oxygen throughout anesthesia in accordance with hospital guidelines, either using a standard nasal cannula or procedural oxygen mask (POM). The choice of supplemental oxygen delivery, as well as oxygen flow rates, are at the discretion of the anesthesia provider. Post-anesthesia, patients will be transferred to the recovery room with either the standard nasal cannula or procedural oxygen mask at a flow rate determined by the anesthesia provider.
Patients assigned to the intervention group will receive humidified oxygen throughout anesthesia in order to assess the effect of HFNO. High-flow nasal cannula (Fisher \& Paykel Optiflow) are connected prior to induction of anesthesia, allowing for different flow rates and oxygen concentration to be administered according to the study protocol. The oxygen concentration of the delivered gas for the trial is 100%. Prior to induction, flow rate will be set to 20 liters per minute and increased to 30 liters per minute if tolerated by the patient. After induction of anesthesia, flow rate will be increased to 60 liters per minute and maintained throughout anesthesia. After anesthesia, the high-flow nasal cannula will be exchanged to a standard nasal cannula and the patient will be transferred to the recovery room at which point the flow rate will be determined by the anesthesia provider.
The decision to discontinue the intervention of the study is entirely at the discretion of the attending anesthesiologist. Alternative means of supplemental oxygen delivery, such as nasal cannula or oxygen mask, may be considered by the attending anesthesiologist. If the intervention is discontinued, the rationale for the decision is documented for later analysis.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
NONE
Study Groups
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Control group
Supplemental oxygen throughout anesthesia in accordance with hospital guidelines.
No interventions assigned to this group
Intervention group
HFNO- treatment
HFNO-Treatment
The investigated intervention is the application of HFNO throughout a high-risk upper GI-endoscopy. Concentration of oxygen is 100%. Prior to induction, flow rate is set to 20 l/min and increased to 30 l/min if tolerated by the patient. After induction of anesthesia, flow rate is increased to 60 l/min and maintained throughout the anesthesia.
Interventions
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HFNO-Treatment
The investigated intervention is the application of HFNO throughout a high-risk upper GI-endoscopy. Concentration of oxygen is 100%. Prior to induction, flow rate is set to 20 l/min and increased to 30 l/min if tolerated by the patient. After induction of anesthesia, flow rate is increased to 60 l/min and maintained throughout the anesthesia.
Eligibility Criteria
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Inclusion Criteria
* one or more of the following:
* Diagnosis of sleep apnea
* BMI ≥ 30 kg/m2
* Baseline SpO2 \< 96% or Requirement for long-term oxygen therapy
* BOSTN score ≥ 2
* BMI ≥ 30 kg/m2
* Observed apnea
* Observed loud Snoring
* Daytime Tiredness
* Neck circumference ≥ 16.5 inches in female, ≥ 17.5 inches in male
Exclusion Criteria
* Known Current infection with COVID-19
* Planned general anesthesia
18 Years
ALL
No
Sponsors
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Beth Israel Deaconess Medical Center
OTHER
Responsible Party
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Maximilian S Schaefer
Director of the Center for Anesthesia Research Excellence (CARE), Division Director of Thoracic Anesthesia, Assistant Professor of Anesthesia
Locations
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Anesthesia, Critical Care and Pain Medicine Department at Beth Israel Deaconess Medical Center
Boston, Massachusetts, United States
Countries
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References
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Lin OS. Sedation for routine gastrointestinal endoscopic procedures: a review on efficacy, safety, efficiency, cost and satisfaction. Intest Res. 2017 Oct;15(4):456-466. doi: 10.5217/ir.2017.15.4.456. Epub 2017 Oct 23.
Elphick DA, Donnelly MT, Smith KS, Riley SA. Factors associated with abdominal discomfort during colonoscopy: a prospective analysis. Eur J Gastroenterol Hepatol. 2009 Sep;21(9):1076-82. doi: 10.1097/MEG.0b013e32832357b3.
Ahrens E, Tartler TM, Suleiman A, Wachtendorf LJ, Ma H, Chen G, Kendale SM, Kienbaum P, Subramaniam B, Wagner S, Schaefer MS. Dose-dependent relationship between intra-procedural hypoxaemia or hypocapnia and postoperative delirium in older patients. Br J Anaesth. 2023 Feb;130(2):e298-e306. doi: 10.1016/j.bja.2022.08.032. Epub 2022 Oct 1.
Qadeer MA, Lopez AR, Dumot JA, Vargo JJ. Hypoxemia during moderate sedation for gastrointestinal endoscopy: causes and associations. Digestion. 2011;84(1):37-45. doi: 10.1159/000321621. Epub 2011 Feb 8.
Lenglet H, Sztrymf B, Leroy C, Brun P, Dreyfuss D, Ricard JD. Humidified high flow nasal oxygen during respiratory failure in the emergency department: feasibility and efficacy. Respir Care. 2012 Nov;57(11):1873-8. doi: 10.4187/respcare.01575. Epub 2012 Mar 13.
Nay MA, Fromont L, Eugene A, Marcueyz JL, Mfam WS, Baert O, Remerand F, Ravry C, Auvet A, Boulain T. High-flow nasal oxygenation or standard oxygenation for gastrointestinal endoscopy with sedation in patients at risk of hypoxaemia: a multicentre randomised controlled trial (ODEPHI trial). Br J Anaesth. 2021 Jul;127(1):133-142. doi: 10.1016/j.bja.2021.03.020. Epub 2021 Apr 28.
Mazzeffi MA, Petrick KM, Magder L, Greenwald BD, Darwin P, Goldberg EM, Bigeleisen P, Chow JH, Anders M, Boyd CM, Kaplowitz JS, Sun K, Terrin M, Rock P. High-Flow Nasal Cannula Oxygen in Patients Having Anesthesia for Advanced Esophagogastroduodenoscopy: HIFLOW-ENDO, a Randomized Clinical Trial. Anesth Analg. 2021 Mar 1;132(3):743-751. doi: 10.1213/ANE.0000000000004837.
Other Identifiers
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2023P000245
Identifier Type: -
Identifier Source: org_study_id
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