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Effect of Different Bed Head Angles on Intraoperative Hypoxemia in Patients Undergoing Painless Gastroenteroscopy: A Prospective Randomized Controlled Study

NCT07594951 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 400

Last updated 2026-05-19

No results posted yet for this study

Summary

Abstract:

Objective: This study aimed to investigate the effect of different bed angles (0° vs. 15°) on the incidence of intraoperative hypoxemia in patients undergoing gastroscopy and colonoscopy. A prospective randomized controlled trial was conducted to evaluate the impact of patient positioning on respiratory safety, providing evidence for individualized anesthesia management.

Background:

With the increasing popularity of painless gastrointestinal endoscopy, hypoxemia has become a major safety concern in anesthesia management, particularly in elderly and obese patients. Studies have shown that the incidence of hypoxemia can exceed 26%, highlighting the importance of optimizing respiratory safety during anesthesia.

Methods:

A total of 400 patients scheduled for painless gastrointestinal endoscopy were recruited and randomly assigned to a control group (0° left lateral position) or an experimental group (15° left lateral position). Baseline data were recorded preoperatively. Intraoperative vital signs were monitored, and the occurrence of hypoxemia and other complications was documented. Data were collected and processed in a blinded manner, followed by statistical analysis using SPSS 26.0.

Conditions

  • Hypoxemia

Interventions

OTHER

Elevating the head of the bed to 15 degrees

Elevating the head of the bed to 15 degrees

Sponsors & Collaborators

  • Xiangya Hospital of Central South University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-05-01
Primary Completion
2026-07-01
Completion
2026-07-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07594951 on ClinicalTrials.gov