Postoperative Respiratory ComplicationNCT04694599
The Effect of Continuous Pulse Oximetry Monitoring and Early Intervention Using Wearable Device on the Incidence of Postoperative Hypoxemia
A study testing Low flow oxygen in people with Postoperative Respiratory Complication, run by Seoul National University Hospital at 1 site in South Korea.
Trial summary
Vital signs of postoperative patient are monitored intensively in post-anesthesia care unit or intensive care unit, but the frequency of surveillance decreases in typical surgical wards. Read more about this study
- Who is it for?
- Ages 45 years and older
- Conditions the study is for
- Postoperative Respiratory Complication
- What is being tested?
- Low flow oxygen
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 94 participants
- Where
- 1 siteSouth Korea
- Study dates
- 1 Feb 2021to 1 Jul 2021
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 45 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients undergoing noncardiac surgery under general anesthesia
- American Society of Anesthesiologists (ASA) physical status class I-III
Who cannot join
- Patients refusing to participate in the study
- Patients under emergency surgery
- Patients who wearable device is not applicable
- Patients scheduled to be transferred to intensive care unit
- Patients scheduled to receive oxygen supplementation in surgical ward
- Patients scheduled to undergo continuous pulse oximetry monitoring
Trial locations and contacts
1 site in 1 country.
Hyung-Chul Lee, MD, PhD contact
About this study
Official title: The Effect of Continuous Pulse Oximetry Monitoring and Early Intervention Using Wearable Device on the Incidence of Postoperative Hypoxemia a Randomized Controlled Trial
Vital signs of postoperative patient are monitored intensively in post-anesthesia care unit or intensive care unit, but the frequency of surveillance decreases in typical surgical wards. The continuous pulse oximetry in surgical wards is known to be useful in detection and prevention of hypoxemia, reducing complications caused by postoperative respiratory depression. However, continuous monitoring is not conducted, due to shortage of equipment and personnel. Recently, wearable device for measuring pulse oxygen saturation, which is inexpensive, applicable to patients with mobility, and can be monitored continuously through wireless connection, has been supplied. In this study, the investigators evaluate the effect of continuous monitoring of oxygen saturation with wireless device(MASIMO Radius-7) on postoperative patients who are transferred to general wards, and evaluate the effect of early intervention in reducing the event of hypoxemia.
- Conditions
- Postoperative Respiratory Complication
- Being tested
- Low flow oxygen
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Low flow oxygenDevice
Low flow oxygen delivered via nasal prong or facial mask. The flow rate is adjusted according to oxygen saturation of the patient.
| Study group | Role | What they receive |
|---|---|---|
| Early intervention | Experimental | The experimental group will receive oxygen supplementation when oxygen saturation decreases according to the monitoring of wearable devices. Receives: Device: Low flow oxygen |
| Typical | Active comparator | The control group will receive oxygen supplementation when oxygen saturation decreases according to typical periodical monitoring. Receives: Device: Low flow oxygen |
What is being measured
The primary outcome is the main question the study is designed to answer.
The prevalence of prolonged hypoxemic episodes
the prevalence of hypoxia lasting more than 1 hour, according to a threshold of SpO2<90%
Measured: 24 hours after transfer to surgical ward
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Jan 2021
- Study start1 Feb 2021 (estimated)
- Primary completion1 May 2021 (estimated)
- Study completion1 Jul 2021 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Postoperative Respiratory ComplicationStudies of the same condition, open and under way.
- More trials run by Seoul National University HospitalThe sponsor's other registered studies.
- 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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Care provider
- Enrolment
- 94 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Seoul National University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04694599
- Sponsor's protocol ID
- RadiusPPG
- Status last verified
- Jan 2021
- First submitted
- 3 Jan 2021
- Last updated
- 5 Jan 2021
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- No
Publications
Sun Z, Sessler DI, Dalton JE, Devereaux PJ, Shahinyan A, Naylor AJ, Hutcherson MT, Finnegan PS, Tandon V, Darvish-Kazem S, Chugh S, Alzayer H, Kurz A. Postoperative Hypoxemia Is Common and Persistent: A Prospective Blinded Observational Study. Anesth Analg. 2015 Sep;121(3):709-715. doi: 10.1213/ANE.0000000000000836.
PubMed 26287299Ishikawa M, Sakamoto A. Postoperative desaturation and bradypnea after general anesthesia in non-ICU patients: a retrospective evaluation. J Clin Monit Comput. 2020 Feb;34(1):81-87. doi: 10.1007/s10877-019-00293-0. Epub 2019 Mar 2.
PubMed 30827008Ramachandran SK, Thompson A, Pandit JJ, Devine S, Shanks AM. Retrospective observational evaluation of postoperative oxygen saturation levels and associated postoperative respiratory complications and hospital resource utilization. PLoS One. 2017 May 17;12(5):e0175408. doi: 10.1371/journal.pone.0175408. eCollection 2017.
PubMed 28520718Weenk M, Bredie SJ, Koeneman M, Hesselink G, van Goor H, van de Belt TH. Continuous Monitoring of Vital Signs in the General Ward Using Wearable Devices: Randomized Controlled Trial. J Med Internet Res. 2020 Jun 10;22(6):e15471. doi: 10.2196/15471.
PubMed 32519972Breteler MJM, KleinJan EJ, Dohmen DAJ, Leenen LPH, van Hillegersberg R, Ruurda JP, van Loon K, Blokhuis TJ, Kalkman CJ. Vital Signs Monitoring with Wearable Sensors in High-risk Surgical Patients: A Clinical Validation Study. Anesthesiology. 2020 Mar;132(3):424-439. doi: 10.1097/ALN.0000000000003029.
PubMed 31743149
Study at a glance
From the registry record, last updated by the sponsor on 5 Jan 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Continuous Pulse Oximetry Monitoring and Early Intervention Using Wearable Device on the Incidence of Postoperative Hypoxemia a Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT04694599
- Acronym / sponsor ID
- RadiusPPG
- Conditions
- Postoperative Respiratory Complication
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 94 participants (estimated)
- Lead sponsor
- Seoul National University HospitalUniversity, hospital or other
- Study start
- 1 Feb 2021 (estimated)
- Primary completion
- 1 May 2021 (estimated)
- Study completion
- 1 Jul 2021 (estimated)
- First posted
- 5 Jan 2021 (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.
Vital signs of postoperative patient are monitored intensively in post-anesthesia care unit or intensive care unit, but the frequency of surveillance decreases in typical surgical wards. The continuous pulse oximetry in surgical wards is known to be useful in detection and prevention of hypoxemia, reducing complications caused by postoperative respiratory depression. However, continuous monitoring is not conducted, due to shortage of equipment and personnel. Recently, wearable device for measuring pulse oxygen saturation, which is inexpensive, applicable to patients with mobility, and can be monitored continuously through wireless connection, has been supplied. In this study, the investigators evaluate the effect of continuous monitoring of oxygen saturation with wireless device(MASIMO Radius-7) on postoperative patients who are transferred to general wards, and evaluate the effect of early intervention in reducing the event of hypoxemia.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, care provider)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Early intervention | Experimental | Device: Low flow oxygenThe experimental group will receive oxygen supplementation when oxygen saturation decreases according to the monitoring of wearable devices. |
| Typical | Active comparator | Device: Low flow oxygenThe control group will receive oxygen supplementation when oxygen saturation decreases according to typical periodical monitoring. |
Who may qualify
- Ages
- 45 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Patients undergoing noncardiac surgery under general anesthesia
- American Society of Anesthesiologists (ASA) physical status class I-III
Key exclusion criteria (6 listed)
- Patients refusing to participate in the study
- Patients under emergency surgery
- Patients who wearable device is not applicable
- Patients scheduled to be transferred to intensive care unit
- Patients scheduled to receive oxygen supplementation in surgical ward
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 |
|---|---|---|
| Low flow oxygenLow flow oxygen delivered via nasal prong or facial mask. The flow rate is adjusted according to oxygen saturation of the patient. | Device | Early intervention, Typical |
Primary outcome
The prevalence of prolonged hypoxemic episodes
Time frame: 24 hours after transfer to surgical ward
the prevalence of hypoxia lasting more than 1 hour, according to a threshold of SpO2<90%
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Jan 2021.
- Background: PubMed 26287299Sun Z, Sessler DI, Dalton JE, Devereaux PJ, Shahinyan A, Naylor AJ, Hutcherson MT, Finnegan PS, Tandon V, Darvish-Kazem S, Chugh S, Alzayer H, Kurz A. Postoperative Hypoxemia Is Common and Persistent: A Prospective Blinded Observational Study. Anesth Analg. 2015 Sep;121(3):709-715. doi: 10.1213/ANE.0000000000000836.
- Background: PubMed 30827008Ishikawa M, Sakamoto A. Postoperative desaturation and bradypnea after general anesthesia in non-ICU patients: a retrospective evaluation. J Clin Monit Comput. 2020 Feb;34(1):81-87. doi: 10.1007/s10877-019-00293-0. Epub 2019 Mar 2.
- Background: PubMed 28520718Ramachandran SK, Thompson A, Pandit JJ, Devine S, Shanks AM. Retrospective observational evaluation of postoperative oxygen saturation levels and associated postoperative respiratory complications and hospital resource utilization. PLoS One. 2017 May 17;12(5):e0175408. doi: 10.1371/journal.pone.0175408. eCollection 2017.
- Background: PubMed 32519972Weenk M, Bredie SJ, Koeneman M, Hesselink G, van Goor H, van de Belt TH. Continuous Monitoring of Vital Signs in the General Ward Using Wearable Devices: Randomized Controlled Trial. J Med Internet Res. 2020 Jun 10;22(6):e15471. doi: 10.2196/15471.
- Background: PubMed 31743149Breteler MJM, KleinJan EJ, Dohmen DAJ, Leenen LPH, van Hillegersberg R, Ruurda JP, van Loon K, Blokhuis TJ, Kalkman CJ. Vital Signs Monitoring with Wearable Sensors in High-risk Surgical Patients: A Clinical Validation Study. Anesthesiology. 2020 Mar;132(3):424-439. doi: 10.1097/ALN.0000000000003029.
- Individual participant dataSharing planned: No
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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. This study is not recruiting at the moment.
Hyung-Chul Lee, MD, PhD contact
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Low flow oxygen in people with Postoperative Respiratory Complication, run by Seoul National University Hospital at 1 site in South Korea.
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 2 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: status not confirmed, as of the sponsor's last update on 5 Jan 2021. 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 South Korea. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Jaehun Lee, MD (+821022857835, hoon147852@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The prevalence of prolonged hypoxemic episodes (time frame: 24 hours after transfer to surgical ward). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04694599, which also lists 5 linked publications.
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 5 Jan 2021; AzTrials last refreshed its copy on 8 Nov 2026.