Sedated Upper Gastrointestinal Endoscopy: Routine upper gastrointestinal endoscopy performed under anesthesiologist-administered sedation. No experimental intervention is applied; the study prospectively observes respiratory events during the recovery period as part of standard clinical care.
Study summary
Sedation during upper gastrointestinal endoscopy may lead to respiratory events not only during the procedure but also in the early recovery period. Although most hypoxemic episodes are considered transient, their frequency, duration, and clinical consequences during recovery remain insufficiently defined.
This prospective observational study aims to evaluate the incidence, duration, and clinical impact of recovery-period hypoxemia following sedated upper gastrointestinal endoscopy. Hypoxemia is defined as SpO₂ \<90% lasting ≥10 seconds. Associated respiratory events and potential risk factors will be analyzed without altering routine clinical practice.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Adults aged ≥18 years
* Scheduled for upper gastrointestinal endoscopy (EGD) under anesthesiologist-administered sedation
* Able to undergo post-procedure monitoring in the recovery unit
* Provided written informed consent for participation and data use
Exclusion Criteria:
* Colonoscopy or combined procedures (EGD + colonoscopy)
* Emergency procedures or procedures performed under intensive care conditions
* Requirement for endotracheal intubation, noninvasive ventilation, or advanced airway support during the procedure
* Known severe upper airway anatomical abnormalities, facial deformity, or tracheostomy
* Inability or refusal to provide informed consent
* Incomplete or unavailable recovery-period oxygen saturation monitoring data
Primary outcome measure(s)
Recovery-Period Respiratory Events — From end of procedure (scope-out) until discharge from recovery unit Occurrence of respiratory events during the recovery period following sedated upper gastrointestinal endoscopy, defined as at least one of the following:
SpO₂ \<90% lasting ≥10 seconds
Requirement for airway maneuver (jaw-thrust, chin-lift, OPA/NPA, mask ventilation)
Escalation or re-initiation of supplemental oxygen
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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