Checking how accurately smartwatches measure oxygen in pulmonary hypertension
Compares smartwatch oxygen readings with finger and blood tests in adults with pulmonary hypertension.
Plain-language title generated from the registry record
Registry title: Accuracy of Smartwatches in Measuring Oxygen Levels in Patients With Pulmonary Hypertension: A Pilot Study
Key facts
- Where
- Glasgow, United KingdomSee the site
Where in United Kingdom
- Golden Jubilee National HospitalGlasgow, United KingdomTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Golden Jubilee National Hospital
- Trial code
- NCT07311135
- Record updated
- 17 February 2026
- Original description
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:Read full original descriptionShow less
Accuracy of Wrist-worn Pulse Oximeter SpO2 Measurements in Patients Diagnosed With Pulmonary Hypertension
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.
Inclusion: 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.
Exclusion: 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; Peripheral arterial disease; Patients with bleeding disorders; Tattoos or skin markings which cover the dorsal wrist; Resting SpO2 <88%.