Hypoxemia
Conditions
Brief 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.
Interventions
OTHERSedated 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.
Sponsors
Istinye University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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 |
Countries
Turkey (Türkiye)
Contacts
CONTACTilke dolgun
Outcome results
None listed