OBPM_Meds2023: Multicentric Prospective Clinical Study to Evaluate the Aktiia Optical Blood Pressure Monitoring (OBPM) Device Compared to Standard Home Blood Pressure Monitoring (HBPM) in Hypertensive Patients When Blood Pressure Lowering Medications Intake

This study with N = 35 participants minimum, over 2 to 6 visits, depending on the study group, has been designed to compare Aktiia device systolic and diastolic blood pressure measurements against HBPM reference measurements in participants taking 3 successive BP-lowering medications during 2 weeks per treatment for GROUPS 1 and 2, while GROUP 3 will receive, during 3 weeks, an individualized medication decided by the investigator. For GROUPS 1 and 2, periods of treatment are followed by 2 weeks of washout.

Study participants are: For GROUP 1, hypertensive Stage 1 (SBP 140-159 mmHg or DBP 90-99 mmHg) or hypertensive Stage 2 (SBP 160-179 mmHg or DBP 100-109 mmHg) that are naive of antihypertensive treatments at the inclusion in the study. For GROUP 2, hypertensives Stage 1 (SBP 140-159 mmHg or DBP 90-99 mmHg) with no other cardiovascular risk factors who are taking an antihypertensive monotherapy, for whom previous treatment will be stopped at the study inclusion and will be resumed for the last 4 weeks of the study participation. For GROUP 3, uncontrolled hypertensive Stage 1 (SBP 140-159 mmHg or DBP 90-99 mmHg) or hypertensive Stage 2 (SBP 160-179 mmHg or DBP 100-109 mmHg) who are taking antihypertensive treatment that doesn't allow them to have controlled blood pressure.

Study participants are asked to:

Wear the Aktiia bracelet continuously every day for 4 to 19 weeks in total, depending on the study group, Initialize their bracelet with the Aktiia cuff at different time points, Measure their blood pressure with an HBPM (Aktiia cuff) twice per day, Take their BP-lowering medications during the treatment periods, Complete 2 to 3 different surveys, depending on the study group, to give their feedback on Aktiia product use compared to HBPM.

Inclusion criteria

• Adult subjects aged 21 to 85 years old
• Subjects that can read and speak French
• Subjects that own a smart phone that uses either the iOS or Android operating system
• Hypertensive Stage 1 (SBP 140-159 mmHg or DBP 90-99 mmHg) or Hypertensive Stage 2 (SBP 160-179 mmHg or DBP 100-109 mmHg) or for subjects aged > 65yo SBP ≥160 mmHg,
• Naive of antihypertensive drugs at the inclusion in the study (no antihypertensive drugs taken in the last 3 months before Visit 1) and during the conduct of the study apart from the study drugs
• Subjects agreeing to attend all 4 on-site visits and follow study procedures
• Subjects that have signed the informed consent form

Exclusion criteria

• Subjects have contraindications to the study drugs
• Subjects with Hypertension Stage 3 (SBP/DBP >180/110 mmHg)
• Subjects with orthostatic hypotension (a 20 mmHg decrease in systolic BP, or 10 mmHg decrease in diastolic BP when measured in the standing position after a 1-minute waiting period)
• Subjects who are likely to be unable to perform the HBPM required for the study within the designated time frame (7 to 11

a.m. and 4 to 9 p.m.).

• Subjects having medical interventions or taking treatments during the study that could have an impact on their BP
• For GROUPS 1 and 2 only: Subjects with target organ damage (left ventricular hypertrophy observed on ECG, and/ or, albumin/creatinine ratio in urine ≥3.5 mg/mmol)
• Subjects with tachycardia (heart rate at rest > 120bpm)
• Subjects with atrial fibrillation
• Cardio myopathy (FE<40%)
• Severe valvular disease
• Implanted devices such as a pacemaker or defibrillator
• Subjects with diabetes
• Subjects with renal dysfunctions (eGFR < 45mL/min/1.73 m2 for patients between 21-85 yo)
• Subjects with hyper-/hypothyroidism
• Subjects with pheochromocytoma
• Subjects with Raynaud's disease
• Subjects with an arteriovenous fistula
• Women in known pregnancy
• Subjects with trembling and shivering
• Subjects with lymphoedema
• Low or elevated potassium level: threshold ≤3.5 mmol/L or ≥4.8 mmol/L
• Presence of an intravascular device
• Subjects with exfoliative skin diseases
• Subjects with arm paralysis
• Subjects with arm amputation
• Subjects with upper arm circumference < 22cm or > 42cm
• Subjects with wrist circumference > 23cm
• Subjects with non-standard circadian rhythm, including shift workers and night workers
• Subjects who have received a mastectomy.