Postoperative HypoxemiaNCT07587970
Effect of Different Body Positions on Hypoxemia During Recovery in Patients Undergoing Painless Gastroscopy and Colonoscopy
A study testing lateral decubitus head-up position (LH group), supine head-up position (SH group) and standard lateral decubitus position group (SL group) in people with Postoperative Hypoxemia, run by General Hospital of Ningxia Medical University at 1 site in China.
Trial summary
Through a multicenter, three-arm randomized controlled trial design, this study aimed to compare the effects of three positioning strategies-side-lying with elevated head position, supine with elevated head position, and standard side-lying position-on the incidence of hypoxemia during the recovery phase in patients… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Postoperative Hypoxemia
- What is being tested?
- lateral decubitus head-up position (LH group), supine head-up position (SH group) and standard lateral decubitus position group (SL group)
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1,617 participants
- Where
- 1 siteChina
- Study dates
- 8 May 2026to 31 Jan 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age ≥ 18 years.
- Both sexes.
- American Society of Anesthesiologists (ASA) physical status classification I-III.
- Scheduled for combined painless esophagogastroduodenoscopy/colonoscopy or either of the two procedures.
- Ability to understand the study protocol and provide written informed consent.
- A broad set of inclusion criteria was adopted to enroll a patient population that better reflects routine clinical practice. The study aimed to enhance the generalizability of the findings by including patients with various comorbidities, such as preprocedural hypoxemia (room-air SpO₂ ≤ 90%), history of pulmonary surgery, obstructive sleep apnea (OSA), and other pulmonary conditions (including asthma, COPD, chronic bronchitis, emphysema, and pulmonary bullae).
Who cannot join
- Severe cardiovascular or cerebrovascular diseases.
- Pregnant patients.
- History of hypersensitivity to ciprofol.
- Withdrawal Criteria:
- Endotracheal intubation required during the procedure.
- Voluntary withdrawal requested by the patient or their legal representative.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
General hospital of Ningxia medical university, Yinchuan, Ningxia
Yinchuan, Ningxia, 750001
xiaoyong wei, 86-951-674-3252, weixy9912@126.cm
About this study
Official title: Effects of Lateral Decubitus Head-up Position, Supine Head-up Position, and Standard Lateral Decubitus Position on Hypoxemia During Recovery in Patients Undergoing Painless Gastroscopy and Colonoscopy: A Multicenter, Three-arm Randomized Controlled Trial
Through a multicenter, three-arm randomized controlled trial design, this study aimed to compare the effects of three positioning strategies-side-lying with elevated head position, supine with elevated head position, and standard side-lying position-on the incidence of hypoxemia during the recovery phase in patients undergoing painless gastroscopy and colonoscopy. The goal was to provide clinicians with a simple, non-invasive, and cost-effective optimization strategy.
Read the detailed description
Painless gastroscopy and colonoscopy have become the gold standard for screening and diagnosing gastrointestinal diseases due to their high patient comfort and excellent compliance rates, with their clinical application expanding annually. This procedure is performed under intravenous general anesthesia to achieve painlessness; however, anesthetic agents exert inhibitory effects on the patient's respiratory center. Additionally, the procedural manipulation causes irritation to the airways and gastrointestinal tract, leading to a high incidence of hypoxemia during the postoperative recovery phase-the most common respiratory adverse event associated with painless gastroscopy and colonoscopy. Mild cases may prolong patient recovery time, while severe cases can result in serious complications such as hypoxic brain injury or cardiac arrest, directly compromising patient safety and healthcare experience.
Positioning is a critical non-pharmacological intervention factor influencing perioperative respiratory function in patients undergoing painless gastroscopy and colonoscopy. Different positions alter thoracic compliance, airway patency, and diaphragmatic position, thereby affecting the patient's ventilation and oxygenation status. Currently, the standard lateral decubitus position is routinely used for painless gastroscopy and colonoscopy, and it has been demonstrated to reduce the incidence of hypoxemia. However, this position presents challenges such as difficulties in patient monitoring and localized pressure-related discomfort. In contrast, the supine head-up and lateral decubitus head-up positions, by elevating the head and adjusting the body angle, effectively mitigate tongue base prolapse and improve thoracic expansion, theoretically reducing the risk of hypoxemia. Nevertheless, there is currently a lack of multicenter, large-sample, prospective randomized controlled studies to compare the efficacy and safety of these three positions in preventing hypoxemia in recovery rooms for painless gastroscopy and colonoscopy patients. Consequently, there is no unified evidence-based guideline for selecting the optimal clinical positioning.
Based on this, this study focuses on three clinically common positions and employs a multicenter, three-arm, randomized controlled parallel design to systematically investigate the effects of lateral supine with head elevated, supine with head elevated, and standard lateral position on postoperative hypoxemia in patients undergoing painless gastroscopy and colonoscopy. The aim is to fill a research gap in this field and provide high-quality evidence-based medical data to optimize postoperative position management during recovery and reduce adverse respiratory events following painless gastrointestinal endoscopy.
Special Note：Prespecified subgroup analyses will be conducted based on age (<65 vs ≥65), sex, BMI, ASA class, smoking and alcohol use, Mallampati score, anesthetic agent (clobupol or propofol), type of endoscopy (gastroscopy, colonoscopy, or gastroenteroscopy), Ramsay sedation score (2-4), pre-procedure hypoxemia, prior pulmonary surgery, OSA, respiratory disease, and intra-procedural hypoxemia (SpO₂ ≤90% for >10 seconds). The influence of heterogeneity on the primary outcome will also be evaluated.
- Conditions
- Postoperative Hypoxemia
- Being tested
- lateral decubitus head-up position (LH group), supine head-up position (SH group), standard lateral decubitus position group (SL group)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
lateral decubitus head-up position (LH group)Procedure or surgery
An angle measuring device is placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale score is assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to touch or pain; 5 = asleep but slow to respond to touch or pain; 6 = deep sleep with no response. Patients scoring 2-4 are immediately randomized into the study group, while those below this range are randomized after achieving the required score. Prior to enrollment, all patients remain in the left lateral position (bed head elevated 0°, consistent with the examination position). Patients assigned to the lateral supine head-elevated group (LH group) maintain their pre-assigned lateral position with the head elevated 30°.
supine head-up position (SH group)Procedure or surgery
An angle measuring device is placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale score is assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to tactile or pain stimuli; 5 = asleep but slow to tactile or pain responses; 6 = deep sleep with no response. Patients scoring 2-4 are immediately randomized into the study group, while those below this range are randomized after achieving the required score. All patients are initially positioned in the left lateral decubitus position (head elevated at 0°, the same as during examination). Patients assigned to the supine head-elevated group (SH group) are transitioned from the lateral position to supine without a headrest, with the head elevated at 30°.
standard lateral decubitus position group (SL group)Procedure or surgery
An angle measuring device was placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale was assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to touch or pain; 5 = asleep but slow to respond to touch or pain; 6 = deep sleep with no response. Patients scoring 2-4 were immediately randomized into the study group, while those below this range were randomized after achieving the required score. All patients were initially positioned in the left lateral decubitus position (head elevated at 0°, the same as during examination). Patients in the Standard Lateral Position Group (SL group) maintained their original left lateral position with the head elevated at 0°.
| Study group | Role | What they receive |
|---|---|---|
| lateral decubitus head-up position group (LH group) | Experimental | The patient maintains the predetermined lateral position with the head of the bed elevated at 30 degrees. Receives: Procedure: supine head-up position (SH group); Procedure: standard lateral decubitus position group (SL group) |
| supine head-up position group (SH group) | Experimental | The patient was transferred from a pre-existing lateral decubitus position to a supine position without a headrest, with the head of the bed elevated at 30 degrees. Receives: Procedure: lateral decubitus head-up position (LH group); Procedure: standard lateral decubitus position group (SL group) |
| standard lateral decubitus position group (SL group) | Experimental | Patients should maintain their original left lateral position with the head of the bed elevated at 0 degrees. Receives: Procedure: lateral decubitus head-up position (LH group); Procedure: supine head-up position (SH group) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of recovery-phase hypoxemia
Proportion of participants experiencing hypoxemia (SpO₂ ≤ 90% lasting >10 seconds) during the post-procedure recovery period
Measured: From PACU admission until discharge, assessed up to 30 minutes
Secondary outcomes (11)
Incidence of Subclinical Respiratory Depression during Recovery
Proportion of participants experiencing subclinical respiratory depression, defined as any episode of pulse oxygen saturation (SpO₂) in the range of 90% to <95% (inclusive of 90%, exclusive of 95%) during the post-procedure recovery period
Measured: From PACU admission until discharge, assessed up to 30 minutes.
Overall Incidence of Airway Intervention During Recovery
Proportion of participants requiring any grade of airway intervention (increase oxygen flow, chin lift, mask ventilation, or reintubation) during recovery.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Cough Severity Grade During Recovery
Severity of cough assessed during the recovery period, graded as: Grade I: No cough, smooth breathing; Grade II: Single mild cough; Grade III: Multiple coughs lasting <15 seconds; Grade IV: Continuous coughing lasting ≥15 seconds. Reported as the proportion of participants reaching each grade (I-IV).
Measured: From PACU admission until discharge, assessed up to 30 minutes
Length of Stay in Post-Anesthesia Care Unit (PACU)
Time from admission to the post-anesthesia care unit (PACU) until discharge criteria are met (modified Aldrete score ≥9 on three consecutive assessments), recorded in minutes.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Respiratory Comfort Score During Recovery
Patient-reported respiratory comfort assessed using a Numerical Rating Scale (NRS) ranging from 0 (worst discomfort) to 10 (greatest comfort)
Measured: From PACU admission until discharge, assessed up to 30 minutes
PACU Nurse Satisfaction Score
Nurse-assessed satisfaction with patient respiratory stability and overall recovery management, rated using a Numerical Rating Scale (NRS) ranging from 0 (lowest satisfaction) to 10 (highest satisfaction), recorded at patient discharge from the post-anesthesia care unit
Measured: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Tachycardia During Recovery
Proportion of participants experiencing tachycardia (heart rate >100 beats/min) during the post-procedure recovery period.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Bradycardia During Recovery
Proportion of participants experiencing bradycardia (heart rate <50 beats/min) during recovery.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Hypotension During Recovery
Proportion of participants experiencing hypotension (systolic blood pressure <80 mmHg) during recovery.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Nausea or Vomiting During Recovery
Proportion of participants experiencing nausea (subjective complaint) or vomiting (objective expulsion of gastric contents) during recovery.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Laryngospasm During Recovery
Proportion of participants experiencing laryngospasm (acute upper airway obstruction with stridor/inability to ventilate, resolving with intervention) during recovery.
Measured: From PACU admission until discharge, assessed up to 30 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 May 2026
- Study start8 May 2026
- Primary completion31 Dec 2026 (estimated)
- Study completion31 Jan 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Postoperative HypoxemiaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 1,617 participants (estimated)
Sponsor and investigators
- Lead sponsor
- General Hospital of Ningxia Medical University
- Sponsor type
- University, hospital or other
- Collaborators
- Yinchuan Traditional Chinese Medicine Hospital, Guyuan Municipal People's Hospital, Wuzhong City People's Hospital, Zhongwei City People's Hospital, Shizuishan City People's Hospital, Zhongwei City Traditional Chinese Medicine Hospital, Pingluo County People's Hospital, Tongxin County People's Hospital, Yanchi County People's Hospital, Zhongning County People's Hospital, Lingwu City People's Hospital, Qingtongxia City People's Hospital
- Responsible party
- Sponsor
- Investigators
- Xinli Ni, Doctoral, Study chair, 86-951-674-3252
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07587970
- Sponsor's protocol ID
- dywe0002
- Status last verified
- May 2026
- First submitted
- 1 May 2026
- Last updated
- 17 Jun 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Lateral Decubitus Head-up Position, Supine Head-up Position, and Standard Lateral Decubitus Position on Hypoxemia During Recovery in Patients Undergoing Painless Gastroscopy and Colonoscopy: A Multicenter, Three-arm Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07587970
- Acronym / sponsor ID
- dywe0002
- Conditions
- Postoperative Hypoxemia
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 1,617 participants (estimated)
- Lead sponsor
- General Hospital of Ningxia Medical UniversityUniversity, hospital or other
- Collaborators
- Yinchuan Traditional Chinese Medicine Hospital, Guyuan Municipal People's Hospital, Wuzhong City People's Hospital, Zhongwei City People's Hospital, Shizuishan City People's Hospital, Zhongwei City Traditional Chinese Medicine Hospital, Pingluo County People's Hospital, Tongxin County People's Hospital, Yanchi County People's Hospital, Zhongning County People's Hospital, Lingwu City People's Hospital, Qingtongxia City People's Hospital
- Study start
- 8 May 2026 (actual)
- Primary completion
- 31 Dec 2026 (estimated)
- Study completion
- 31 Jan 2027 (estimated)
- First posted
- 14 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Through a multicenter, three-arm randomized controlled trial design, this study aimed to compare the effects of three positioning strategies-side-lying with elevated head position, supine with elevated head position, and standard side-lying position-on the incidence of hypoxemia during the recovery phase in patients undergoing painless gastroscopy and colonoscopy. The goal was to provide clinicians with a simple, non-invasive, and cost-effective optimization strategy.
Detailed description
Painless gastroscopy and colonoscopy have become the gold standard for screening and diagnosing gastrointestinal diseases due to their high patient comfort and excellent compliance rates, with their clinical application expanding annually. This procedure is performed under intravenous general anesthesia to achieve painlessness; however, anesthetic agents exert inhibitory effects on the patient's respiratory center. Additionally, the procedural manipulation causes irritation to the airways and gastrointestinal tract, leading to a high incidence of hypoxemia during the postoperative recovery phase-the most common respiratory adverse event associated with painless gastroscopy and colonoscopy. Mild cases may prolong patient recovery time, while severe cases can result in serious complications such as hypoxic brain injury or cardiac arrest, directly compromising patient safety and healthcare experience.
Positioning is a critical non-pharmacological intervention factor influencing perioperative respiratory function in patients undergoing painless gastroscopy and colonoscopy. Different positions alter thoracic compliance, airway patency, and diaphragmatic position, thereby affecting the patient's ventilation and oxygenation status. Currently, the standard lateral decubitus position is routinely used for painless gastroscopy and colonoscopy, and it has been demonstrated to reduce the incidence of hypoxemia. However, this position presents challenges such as difficulties in patient monitoring and localized pressure-related discomfort. In contrast, the supine head-up and lateral decubitus head-up positions, by elevating the head and adjusting the body angle, effectively mitigate tongue base prolapse and improve thoracic expansion, theoretically reducing the risk of hypoxemia. Nevertheless, there is currently a lack of multicenter, large-sample, prospective randomized controlled studies to compare the efficacy and safety of these three positions in preventing hypoxemia in recovery rooms for painless gastroscopy and colonoscopy patients. Consequently, there is no unified evidence-based guideline for selecting the optimal clinical positioning.
Based on this, this study focuses on three clinically common positions and employs a multicenter, three-arm, randomized controlled parallel design to systematically investigate the effects of lateral supine with head elevated, supine with head elevated, and standard lateral position on postoperative hypoxemia in patients undergoing painless gastroscopy and colonoscopy. The aim is to fill a research gap in this field and provide high-quality evidence-based medical data to optimize postoperative position management during recovery and reduce adverse respiratory events following painless gastrointestinal endoscopy.
Special Note：Prespecified subgroup analyses will be conducted based on age (<65 vs ≥65), sex, BMI, ASA class, smoking and alcohol use, Mallampati score, anesthetic agent (clobupol or propofol), type of endoscopy (gastroscopy, colonoscopy, or gastroenteroscopy), Ramsay sedation score (2-4), pre-procedure hypoxemia, prior pulmonary surgery, OSA, respiratory disease, and intra-procedural hypoxemia (SpO₂ ≤90% for >10 seconds). The influence of heterogeneity on the primary outcome will also be evaluated.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| lateral decubitus head-up position group (LH group) | Experimental | Procedure: supine head-up position (SH group), Procedure: standard lateral decubitus position group (SL group)The patient maintains the predetermined lateral position with the head of the bed elevated at 30 degrees. |
| supine head-up position group (SH group) | Experimental | Procedure: lateral decubitus head-up position (LH group), Procedure: standard lateral decubitus position group (SL group)The patient was transferred from a pre-existing lateral decubitus position to a supine position without a headrest, with the head of the bed elevated at 30 degrees. |
| standard lateral decubitus position group (SL group) | Experimental | Procedure: lateral decubitus head-up position (LH group), Procedure: supine head-up position (SH group)Patients should maintain their original left lateral position with the head of the bed elevated at 0 degrees. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Age ≥ 18 years.
- Both sexes.
- American Society of Anesthesiologists (ASA) physical status classification I-III.
- Scheduled for combined painless esophagogastroduodenoscopy/colonoscopy or either of the two procedures.
- Ability to understand the study protocol and provide written informed consent.
Key exclusion criteria (6 listed)
- Severe cardiovascular or cerebrovascular diseases.
- Pregnant patients.
- History of hypersensitivity to ciprofol.
- Endotracheal intubation required during the procedure.
- Voluntary withdrawal requested by the patient or their legal representative.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| lateral decubitus head-up position (LH group)An angle measuring device is placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale score is assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to touch or pain; 5 = asleep but slow to respond to touch or pain; 6 = deep sleep with no response. Patients scoring 2-4 are immediately randomized into the study group, while those below this range are randomized after achieving the required score. Prior to enrollment, all patients remain in the left lateral position (bed head elevated 0°, consistent with the examination position). Patients assigned to the lateral supine head-elevated group (LH group) maintain their pre-assigned lateral position with the head elevated 30°. | Procedure or surgery | standard lateral decubitus position group (SL group), supine head-up position group (SH group) |
| supine head-up position (SH group)An angle measuring device is placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale score is assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to tactile or pain stimuli; 5 = asleep but slow to tactile or pain responses; 6 = deep sleep with no response. Patients scoring 2-4 are immediately randomized into the study group, while those below this range are randomized after achieving the required score. All patients are initially positioned in the left lateral decubitus position (head elevated at 0°, the same as during examination). Patients assigned to the supine head-elevated group (SH group) are transitioned from the lateral position to supine without a headrest, with the head elevated at 30°. | Procedure or surgery | lateral decubitus head-up position group (LH group), standard lateral decubitus position group (SL group) |
| standard lateral decubitus position group (SL group)An angle measuring device was placed beside the head of the examination bed to facilitate precise adjustment of the head position. Upon admission to the recovery room, the patient's Ramsay Sedation Scale was assessed by an independent investigator (the attending anesthesiologist): 1 = agitated; 2 = fully awake, calm and cooperative; 3 = drowsy but responsive to verbal commands; 4 = drowsy but responsive to touch or pain; 5 = asleep but slow to respond to touch or pain; 6 = deep sleep with no response. Patients scoring 2-4 were immediately randomized into the study group, while those below this range were randomized after achieving the required score. All patients were initially positioned in the left lateral decubitus position (head elevated at 0°, the same as during examination). Patients in the Standard Lateral Position Group (SL group) maintained their original left lateral position with the head elevated at 0°. | Procedure or surgery | lateral decubitus head-up position group (LH group), supine head-up position group (SH group) |
Primary outcome
Incidence of recovery-phase hypoxemia
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Proportion of participants experiencing hypoxemia (SpO₂ ≤ 90% lasting >10 seconds) during the post-procedure recovery period
11 secondary outcomes
Incidence of Subclinical Respiratory Depression during Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes.
Overall Incidence of Airway Intervention During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Cough Severity Grade During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Length of Stay in Post-Anesthesia Care Unit (PACU)
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Respiratory Comfort Score During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
PACU Nurse Satisfaction Score
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Tachycardia During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Bradycardia During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Hypotension During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Nausea or Vomiting During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Incidence of Laryngospasm During Recovery
Time frame: From PACU admission until discharge, assessed up to 30 minutes
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Jun 2026.
- Individual participant dataSharing planned: No
Related trials for Postoperative Hypoxemia
Recruiting
Transoral Nasal Cannula Oxygen Therapy for Mouth-Breathing Patients in the Postanesthesia Care Unit
Postoperative Hypoxemia
Recruiting
BMI-Adjusted PEEP During One-Lung Ventilation in Thoracic Surgery
Pulmonary Resection Surgery, One Lung Ventillation (OLV)
Not yet recruiting
Transcutaneous Auricular Vagus Nerve Stimulation for Reducing Postoperative Hypoxemia
Hypoxemia
Recruiting
Medical Device Clinical Trial Without CE Marking to Evidence Safety and Performance of the INBENTUS VERSATILE Ventilator in Patients Requiring Assisted/Controlled Mechanical Ventilation and Weaning.
Acute Respiratory Distress Syndrome (ARDS), Pneumonia
Not yet recruiting
Heated Humidified Oxygen in PACU Patients
Hypoxemia, Postoperative Complications
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Xinli Ni, Doctoral study chair
86-951-674-3252
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing lateral decubitus head-up position (LH group), supine head-up position (SH group) and standard lateral decubitus position group (SL group) in people with Postoperative Hypoxemia, run by General Hospital of Ningxia Medical University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 17 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact xiaoyong wei, Master's degree (86-951-674-3252, weixy9912@126.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incidence of recovery-phase hypoxemia (time frame: From PACU admission until discharge, assessed up to 30 minutes). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jun 2026.