Maximal Effort-dependent Respiratory Flow Rates
Maximal Effort-dependent Respiratory Flow Rates: Reproducibility and Reference Values
研究概览
地位
条件
详细说明
Reproducibility and reference values in normal subjects: the investigators will propose a method for measurement of the maximal inspiratory flow rates (MIFR) and establish their reproducibility in normal subjects. The variability of these inspiratory flow rates will be compared with the variability of effort dependent and non-effort dependent expiratory flow rates.
Also, reference equations will be drawn up and compared to the only existing set of reference values (2) (needing a revision).
- Reproducibility in disease: the investigators will evaluate the reproducibility of the MIFR in patients with neuromuscular diseases (Steinert muscular dystrophy, amyotrophic lateral sclerosis) and with upper airway obstruction (tracheal stenosis, thyroid enlargement) and compare to the reproducibility of expiratory flow rates in this population.
- Monitoring of diseases: In the neuromuscular patients MIFR will be correlated to the existing parameters used for monitoring of these diseases (respiratory muscle strength, forced vital capacity), with a longitudinal follow-up.
In the patients with upper airway obstruction the MIFR (quantitative measurement) will be compared to the visual inspection (qualitative interpretation) of the maximal flow-volume loop and also the evolution after a therapeutic intervention (airway stenting, thyroidectomy) will be monitored.
研究类型
注册 (预期的)
联系人和位置
学习地点
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Brussels、比利时、1090
- 招聘中
- UZ Brussel
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接触:
- Daniel Schuermans, RN
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首席研究员:
- Shane Hanon, MD
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
取样方法
研究人群
描述
Inclusion Criteria:
- healthy hospital workers or visitors
Exclusion Criteria:
- current smokers or ex-smokers with a history of > 80 PY
- Presence or history of serious illness or thorax deformity (questionnaire)
- recent respiratory tract infection (1 week)
学习计划
研究是如何设计的?
设计细节
研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Normal values for maximal inspiratory flow rates
大体时间:3 years
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Peak inspiratory flow rate (PIF)
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3 years
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Normal values for maximal inspiratory flow rates
大体时间:3 years
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Maximal flow rate when 50% of inspiratory vital capacity has been inhaled (FIF50)
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3 years
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Reproducibility of maximal inspiratory flow rates
大体时间:3 years
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Coefficient of variation for peak inspiratory flow rate (PIF)
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3 years
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合作者和调查者
调查人员
- 首席研究员:Shane Hanon, MD、Universitair Ziekenhuis Brussel
研究记录日期
研究主要日期
学习开始
初级完成 (预期的)
研究完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.
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