NCT07311135Recruiting
Accuracy of Smartwatches in Measuring Oxygen Levels in Patients With Pulmonary Hypertension: A Pilot Study
Accuracy of Wrist-worn Pulse Oximeter SpO2 Measurements in Patients Diagnosed With Pulmonary Hypertension
Source: ClinicalTrials.gov · Last updated 17 Feb 2026
Brief summary (registry, in English)
The goal of this study is to learn how accurate smartwatches are at measuring oxygen levels in patients with a condition called pulmonary hypertension. The main questions it aims to answer are: * How accurate the smartwatches are at measuring oxygen levels when the patient is sitting at rest * How accurate are smartwatches at measuring oxygen levels after exercise * How accurate are smartwatches at measuring oxygen levels after breathing a lower level of oxygen through a mask. Researchers will compare oxygen levels measured through a smartwatch with those checked through a finger probe oxygen monitor and also from a blood sample checked from the artery in the wrist to see if smartwatch oxygen measurements are similar. Participants will: -Attend the hospital once, just for a few hours to collect all the required data.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 20 (estimated)
- First submitted
- 16 Dec 2025
- Start date
- 17 Dec 2025
- Primary completion date
- Dec 2026
- Lead sponsor
- Golden Jubilee National Hospital
- NCT number
- NCT07311135
What you commit to
- Study type: Observational
- Planned participants: 20
- From 17 Dec 2025 to the primary completion date, Dec 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Severe concurrent medical condition that would prevent participation in study procedures or with life expectancy \<3 months
- Patients on anticoagulation
- Except in circumstances where anticoagulation is given solely for historical perceived long term survival benefit for pulmonary arterial hypertension. This patient group could be given the option to come off their anticoagulation for 1 week prior to the study visit if they wished to take part in the study. It could then be restarted the day following the study visit providing there were no bleeding complications related to the arterial line.
Other illness
- Peripheral arterial disease
- Patients with bleeding disorders
Other
- Tattoos or skin markings which cover the dorsal wrist.
- Resting SpO2 \<88%
Who the study is looking for
- Aged 18-years old and above.
- Diagnosed with pulmonary hypertension by right heart catheterisation showing a baseline mean pulmonary artery pressure \> 20mmHg, PVR \>2 Woods Units.
- Able to perform a six-minute walk test (6MWT)
- Able to give written informed consent.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Golden Jubilee National Hospital Coordinator of this site? Confirm its status | Glasgow | United Kingdom | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.