Effects of Continuous Positive Airway Pressure in Patients With Resistant Hypertension and Obstructive Sleep Apnea
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Ambulatory blood pressure monitoring
研究概览
简要总结
Obstructive sleep apnea (OSA) is an important cause of refractory hypertension but the impact of treatment with continuous positive airway pressure (CPAP) is not completely understood. The aim of this project is to study the effects of CPAP on blood pressure control and its influences on cardiac remodeling and arterial stiffness in patients with refractory hypertension and moderate or severe OSA.
详细描述
Study design Interventional, open-label, randomized.
Patients selection
Fifty refractory hypertensive patients with moderate-to-severe OSA, aged between 30 to 65 years old will be recruited from the outpatient clinics of the Heart Institute by the hospital staff.
Refractory hypertension will be defined as usually: blood pressure higher than or equal to 140x90 mmHg after a regimen of three drugs, including a diuretic for a minimum of 3 months. Initial evaluation will consist on ambulatory blood pressure measurement for 24 hours and a detailed clinical examination. Moderate to severe OSA will be defined as an apnea-hypopnea index > 15 evens per hour, after an overnight polysomnography.
Exclusion criteria include BMI >40 kg/m2; diabetes mellitus; aortic, heart and valve diseases; renal failure; other identifiable causes of hypertension, no adherence, use of cocaine, amphetamines, other illicit drugs, sympathomimetics (decongestants, anorectics), oral contraceptive hormones, nonsteroidal anti-inflammatory drugs.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 30 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Refractory hypertensive patients with moderate-to-severe OSA, aged between 30 to 65 years old.
排除标准
- •Aortic, heart and valve diseases
- •Renal failure
- •Other identifiable causes of hypertension, no adherence, use of cocaine, amphetamines, other illicit drugs, sympathomimetics (decongestants, anorectics), oral contraceptive hormones, nonsteroidal anti-inflammatory drugs.
结局指标
主要结局
Ambulatory blood pressure monitoring
时间窗: Change from Baseline in Blood Pressure at 6 months
次要结局
- Change from Baseline in Arterial stiffness at 6 months(baseline and 6 months)
- change from baseline in heart remodeling at 6 months(baseline and 6 months)
研究者
Geraldo Lorenzi-Filho
MD; PhD
University of Sao Paulo