Evaluating Wrist-Worn Smartwatch Accuracy for Oxygen Levels in Adults with Pulmonary Hypertension

What this Trial Is About

Researchers are investigating how accurately smartwatches can measure oxygen levels in people with pulmonary hypertension, a condition affecting blood pressure in the lungs. This pilot study compares smartwatch oxygen readings to those from a finger probe and arterial blood samples taken from the wrist. The main focus is on measuring oxygen while resting, after exercise, and during a controlled low oxygen breathing test. During a single hospital visit lasting about three hours, participants will undergo several tests. These include a six-minute walk test to measure oxygen after exercise and a hypoxic challenge where they breathe air with reduced oxygen through a mask. Arterial blood samples, smartwatch readings, and finger pulse oximeter data will be collected at rest, after exercise, and during the hypoxic challenge to compare accuracy. Participants will have an arterial line placed for blood sampling and will be monitored for safety during and after testing. All data will be anonymized and securely stored. The study aims to recruit about 20 patients diagnosed with pulmonary hypertension who can perform the walk test and provide informed consent. Researchers will analyze how closely smartwatch measurements match the gold standard arterial oxygen levels.

Accuracy of Smartwatches in Measuring Oxygen Levels in Patients With Pulmonary Hypertension: A Pilot Study