Effectiveness of Tiotropium to Maintain Inspiratory Capacity Against Metronome Paced Hyperventilation Induced Dynamic Hyperinflation in COPD Patients With Lung CT Scored Emphysema
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 29
- 试验地点
- 1
- 主要终点
- Correlate tiotropium induced increase in inspiratory capacity (IC)and FEV 1 with extent of emphysema as scored by lung CT.
研究概览
简要总结
To evaluate if tiotropium (Spiriva)induced bronchodilation of inspiratory capacity in patients with moderate to severe copd subjected to metronome paced hyperventilation induced dynamic hyperinflation is dependent upon the extent of underlying emphysema as determined by high resolution-thin section CT lung.
详细描述
We will analyze post hoc, data that was previously published: Gelb AF et al.Chest 2006;131:690-695. We have shown that tiotropium increases resting inspiratory capacity thereby providing lung volume protection against metronome paced hyperventilation induced dynamic hyperinflation. End point will be to correlate increase in tiotropium induced FEV 1(L) and inspiratory capacity with extent of underlying emphysema as scored by lung CT ( Gelb AF et al:Chest 1996; 109: 353-359)in 29 patients with COPD. We will also correlate the decrease in inspiratory capacity following metronome paced hyperventilation induced dynamic hyperinflation with extent of lung CT scored emphysema.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Crossover
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 40 Years 至 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
1
patients with moderate to severe copd with varying extent of emphysema
干预措施: tiotropium (Drug)
结局指标
主要结局
Correlate tiotropium induced increase in inspiratory capacity (IC)and FEV 1 with extent of emphysema as scored by lung CT.
时间窗: After 30 days and 1.5hr of tiotropium
次要结局
- Correlate decrease in IC and FEV 1 following dynamic hyperinflation with underlying emphysema.(After 30 days and 1.5hr of tiotropium)