The Effects of Helium-Hyperoxia on 6-Minute Walking Distance in Chronic Obstructive Pulmonary Disease - A Randomized, Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 16
- 试验地点
- 1
- 主要终点
- 6 minute walking distance
研究概览
简要总结
We assessed the effect of altering inspired gas on the 6MWT distance in COPD. We hypothesized that HeO2 would improve walking distance and reduce shortness of breath compared to both RA and O2, and potentially improve quality of life for COPD patients.
详细描述
We hypothesized that inspiring helium-hyperoxia (HeO2) would significantly improve 6-minute walking test (6MWT) distance in Chronic Obstructive Pulmonary Disease (COPD) subjects.
This was a blinded, randomized crossover study. At Visit 1 we assessed pulmonary function, exercise capacity and 6MWT distance. Visits 2 and 3 consisted of four 6MWT with different inspired gases: room air by mask (RA), 100% O2 by mask (Mask O2), 100% O2 by nasal prongs (Nasal O2), and 70% He/30% O2 by mask (HeO2). Walking distance, shortness of breath, leg fatigue, O2 saturation and heart rate (HR) were assessed
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Exertional dyspnea
- •Activity limitation
排除标准
- •Recent exacerbation (< 4 wks)
- •Supplemental O2
- •Significant cardiovascular/musculoskeletal abnormalities
结局指标
主要结局
6 minute walking distance
次要结局
- shortness of breath
- leg fatigue
- arterial oxygen saturation