This observational study is looking at how CPAP (continuous positive airway pressure) therapy affects blood pressure in people with obstructive sleep apnea (OSA). Researchers want to see if the impact of CPAP on your 24-hour average blood pressure changes depending on your specific sleep apnea symptoms. You might be able to join if you are between 30 and 75 years old, have moderate to severe OSA, and are willing to have your blood pressure monitored at the start of the study and again after 6 months of CPAP use. The study aims to enroll 1739 participants, but its current status is unclear.

Study design

This is a multi-center, observational study comparing people with moderate to severe obstructive sleep apnea who use CPAP therapy to those who do not. It plans to enroll 1739 participants.

What's involved

You would complete blood pressure monitoring at the start and after 6 months. You would also provide blood samples, complete questionnaires, and have an electrocardiogram (ECG) and facial photographs taken. You will also be contacted by phone once a year for ten years.

Compensation

Not stated in the trial record.

Follow-up

Measurements are collected at baseline and 6-month follow-up. Participants will also be contacted by telephone once a year over a ten-year period.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.