Untreated Essential Hypertension
Conditions
Brief summary
β-blockers (BBs) with different pharmacological properties may have heterogeneous effects on sympathetic nervous activity (SNA) and central aortic pressure (CAP), which are independent cardiovascular factors for hypertension. Hence, we analyzed the effects of bisoprolol and atenolol on SNA and CAP in hypertensive patients.
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
* 25\ 65 years old * untreated essential hypertension * SBP 140-160mmHg & DBP 90-100mmHg * Sinus rhythm * Resting heart rate \>70bpm * Can give written informed consent
Exclusion criteria
* Atrial Fibrillation (AF)/ Sick Sinus Syndrome (SSS)/ atrioventricular block 2-3 grade(AVBⅡ-Ⅲ) without pacemaker * Bradyarrhythmia/ hypotensive * Unstable Angina Pectoris (UAP)/AMI/ HF (NYHA class III - IV) * Uncontrolled diabetes mellitus (DM) * Bronchial asthma * Gastro-intestinal ulcer or skin ulcer * Liver dysfunction/ renal impairment * Treated with CCB (Calcium antagonists) ( except amlodipine) or other beta blocker. * Glaucoma * Known allergic/ intolerance to beta blocker * Pregnant or lactating women * Participation in another clinical study within the last 3 months * Legal incapacity or limited legal capacity
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| baroreflex sensitivity | 4~8 weeks | After 2-week maintenance treatment when the RHR was ≤65 bpm or at 8-week final visit |
| central aortic pressure | 4~8 weeks | After 2-week maintenance treatment when the RHR was ≤65 bpm or at 8-week final visit |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Number of Participants with Adverse Events as a Measure of Safety and Tolerability | 4-8 weeks | After 2-week maintenance treatment when the RHR was ≤65 bpm or at 8-week final visit |
| heart rate variability | 4~8 weeks | After 2-week maintenance treatment when the RHR was ≤65 bpm or at 8-week final visit |
| peripheral blood pressure | 4-8 weeks | After 2-week maintenance treatment when the RHR was ≤65 bpm or at 8-week final visit |
Countries
China