Blood pressure measurements In all the patients, during each visit, BP measurements were performed three times at rest, in the supine position, in standard conditions, and using an upper arm blood pressure monitor (Omron 705IT). Ambulatory, 24-hour blood pressure measurements (ABPM) were carried out using an A&D, 24-hour ambulatory peripheral blood pressure monitor. The frequency of measurements was every 15 minutes between 7:00 and 22:00 and every 30 minutes between 22:00 and 7:00.