在评估吸气肌力量和耐力时对肺容积进行软件补偿。
Software compensation for lung volume in assessment of inspiratory muscle strength and endurance.
作者信息
McKenzie D K, Gandevia S C, Gorman R B, Leeper J B
机构信息
Department of Respiratory Medicine, Prince of Wales Hospital, Sydney, Australia.
出版信息
Thorax. 1995 Mar;50(3):230-4. doi: 10.1136/thx.50.3.230.
BACKGROUND
To increase the sensitivity of measurements of maximal inspiratory pressure (MIP) as a test of inspiratory muscle strength and endurance, software was developed to correct for variation in lung volume.
METHODS
Using a body plethysmograph to determine absolute lung volume during each manoeuvre, values for MIP were expressed as a percentage of the pressure "expected" from the unfatigued MIP/lung volume relation in each subject.
RESULTS
The method reduced the variance in peak and average pressure during a series of 18 MIP manoeuvres of 10 seconds duration separated by rest intervals of 10 seconds.
CONCLUSIONS
The correlation between average pressure and contraction number was improved significantly by the MIP/lung volume correction. This simple correction has many applications in measurements of the MIP.
背景
为提高作为吸气肌力量和耐力测试的最大吸气压力（MIP）测量的灵敏度，开发了一种软件以校正肺容积的变化。
方法
使用体容积描记器在每次操作期间确定绝对肺容积，MIP值表示为每个受试者中根据未疲劳的MIP/肺容积关系“预期”的压力的百分比。
结果
该方法减少了在一系列18次持续10秒的MIP操作期间，间隔10秒休息时峰值压力和平均压力的方差。
结论
MIP/肺容积校正显著改善了平均压力与收缩次数之间的相关性。这种简单的校正在MIP测量中有许多应用。
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