Plain English Summary
Background and study aims
Oxygen is carried in the blood attached to hemoglobin molecules. Oxygen saturation is a measure of how much oxygen the blood is carrying as a percentage of the maximum it could carry. Oxygen saturation can be measured non-invasively using pulse oximetry. The pulse oximeter probe is often covered with an opaque wrap, as environmental or phototherapy light could interfere with the oxygen saturation measurement. The aim of this study is to find out whether covering the pulse oximeter sensor with an opaque wrap will provide a more accurate reading and faster result.
Who can participate?
Infants in the neonatal intensive care unit or postnatal ward of University Hospital of North Tees
What does the study involve?
Infants are randomly allocated to undergo pulse oximeter recording using a sensor either with or without an opaque wrap. They then switch over to the other type of sensor for another recording. This data is not be used for treatment - a separate pulse oximeter is used if needed.
What are the possible benefits and risks of participating?
There won’t be any direct benefit to participants, but this study will help to improve the understanding of oxygen saturation measurements in newborns. Since this study doesn’t involve any invasive procedures there won’t be any discomfort /risk of participating.
Where is the study run from?
University Hospital of North Tees (UK)
When is the study starting and how long is it expected to run for?
January 2018 to March 2019
Who is funding the study?
Local R&D incentive funding
Who is the main contact?
Dr Prakash Loganathan
Dr Prakash Kannan Loganathan
University Hospital of North Tees
Opaque wrap for PUlse oximeter Sensor in neonates
Application of opaque wrap to pulse oximeter sensor (OWPS) obtains faster results (saturation, heart rate) when compared to sensor application without any opaque wrap (PS) in ambient light and phototherapy.
Not provided at time of registration
Interventional single-center randomised controlled trial
Primary study design
Secondary study design
Randomised cross over trial
Patient information sheet
Not available in web format, please contact details to request a participant information sheet
Neonatal oxygen saturation monitoring
There will be two stratum (groups) based on gestation: >27 weeks to 34 weeks; >34 weeks. This will help in having a sufficient number of small babies and validate the data in small babies. Recruitment will start after 24hrs to allow sufficient time for transition, until their hospital stay. Random numbers will be created using online tool by one of the research team member who is not involved in recruitment. The sequence will be generated and stored in an opaque-sealed envelope. This envelope will be opened after parent's consent, at the time of recruitment. Blinding is not feasible due to the nature of the intervention, but all the pulse oximeter recordings will be blinded. Moreover, downloaded data doesn't contain any information regarding the intervention received.
1. Opaque wrap with pulse oximeter sensor (OWPS)
2. Pulse oximeter sensor without any opaque wrap (PS)
Each infant after the initial intervention (OWPS or PS) based on randomization will cross over to the other intervention subsequently for another period of 10 minutes. For example, if an infant is initially randomized to OWPS, the trialists will perform pulse oximeter recording with opaque wrap for a period of 10 minutes, following which the same infant will undergo another 10 minutes of pulse oximeter recording without opaque wrap. The subsequent intervention will be carried out after restarting the pulse oximeter machine and the sensor will be applied on the same foot. The advantage of this method is that the same infant could act as own control, to compare the two techniques in the same infant. Both Nellcor and Masimo recording will be carried out simultaneously in both feet, so each infant will undergo total of 20 minutes of recording.
All the study recordings will happen during the daytime and with hospital/intensive care/ambient light or phototherapy. The data from the research pulse oximeters will not be used for any clinical management; a separate pulse oximeter from the neonatal unit attached to wrist (right/left) will be used for all the clinical management, if needed. These recordings will be done when the infant is quiet/sleep state. This recording will occur under the direct supervision of one of the investigators. Medical team/parents will be able to carry out routine activities, if needed.
Primary outcome measure
The time to display a valid data for the two techniques (pulse oximeter sensor with opaque wrap versus pulse oximeter sensor without opaque wrap). Total duration of recording will be for 10 minutes from the time of valid data display. Valid data as per study protocol definition. These data will be downloaded directly from both monitors into research laptop
Secondary outcome measures
1. Number of valid data points for the two techniques (OWPS and PS) during the 10 minute recording will be compared from the downloaded data
2. Number of artifacts for the two techniques (OWPS and PS) during the 10 minute recording will be compared from the downloaded data. Artifacts as per study protocol definition
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. All infants ≥27 weeks of gestation
2. Neonates admitted in neonatal intensive care unit or postnatal ward
3. A parent or guardian is able and willing to provide informed consent
Target number of participants
Participant exclusion criteria
1. Antenatal or postnatal diagnosed major congenital malformations (e.g. congenital diaphragmatic hernia, congenital heart disease, hydrops, lung malformation and known blood dyscrasias)
2. Neonates who are undergoing therapeutic hypothermia, as hypothermia could interfere in pulse oximeter sensitivity
3. Critically ill Infants based on the discretion on medical team
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
University Hospital of North Tees
Hardwick Rd Hardwick
Stockton on Tees
Local R&D incentive funding
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Study protocol including other documents will be available on request. Planned publication of the study results in a high-impact peer reviewed journal.
IPD sharing statement
The datasets generated during and/or analysed during the current study are/will be available upon request from the research and development office (email@example.com). All de-identified/anonymised data will be available after trial completion after formal request and approval by the local R & D department. This is already included in the patient consent form and participant information leaflet.
Intention to publish date
Participant level data
Available on request
Basic results (scientific)