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A Trial Manufacture of Rhinomanometer with Percentage Expression

百分比表示鼻压力计的试制

基本信息

批准号：
63870068
负责人：
UNNO Tokuji
金额：
$ 2.18万
依托单位：
Asahikawa Medical College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B).
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1990
项目状态：
已结题

项目摘要

The nasal resistance is a usual way to express patency of the nasal cavity in rhinomanometry. The relationship between flow and pressure is curvilinear, so the value of the resistance is different in a subject according to the reference point. Although the international and Japanese committees paid great endeavor to decide the only one reference point, the conclusion was not yet attained. The idea of percent expression of nasal patency began from the above mentioned problem. Pressure flow curves from many subjects do not cross each other except the origin. This means that aerodynamic characteristics in the nasal cavities are similar and that if a curve is expressed by a formula y=f (x), others are expressed by multiplying the formula by n.In the first year, flow signals of a pressure flow curve were sampled at the same interval of 2.5 Pa along the x axis, and digitalized by A-D converter. Each flow value was divided by another one at the same pressure point using a personal computer. T … More hus, we could obtain many quotients. These quotients were very similar and mathematically averaged with a standard deviation. Calculations at the same pressure points meant comparison of resistance or conductance, in other words, comparison of the whole curve was accomplished. If one of the curves was standard, pathognomonic values were expressed as ratio or percentage. If one was preoperative, postoperative improvement was evaluated.In the second year, we performed almost the same procedure by built-in microcomputer of an ordinary rhinomanometer. Satisfactory results were obtained.In the third year, an additional data terminal was connected to the rhinomanometer. A 64 K Byte RAM card could memorize 16 curves and send them back to the rhinomanometer whenever necessary. Besides, these data were also sent to a personal computer to promote further analyses.Percent expression of nasal patency is reasonable from the viewpoint of aerodynamic comparison of the nasal cavities, understandable by practitioners and accurate for clinical as well as experimental studies. Less

鼻阻力是鼻腔测压中表示鼻腔通畅的常用方法。流量和压力之间的关系是曲线的，因此，根据参考点的不同，受试者的阻力值也不同。尽管国际和日本委员会为确定唯一的参考点付出了巨大奋进，但尚未得出结论。鼻通畅率的概念就是从这个问题开始提出的。许多受试者的压力-流量曲线除原点外不相互交叉。这意味着鼻腔中的空气动力学特性是相似的，并且如果曲线由公式y=f（x）表示，则其它曲线通过将公式乘以n来表示。在第一年中，压力流量曲线的流量信号沿x轴以沿着2.5 Pa的相同间隔采样，并由A-D转换器数字化。使用个人计算机将每个流量值除以相同压力点处的另一个流量值。不 ...更多信息因此，我们可以得到许多的好处。这些变量非常相似，并以标准差进行数学平均。在相同压力点的计算意味着电阻或电导的比较，换句话说，完成了整个曲线的比较。如果其中一条曲线是标准曲线，则特征值表示为比率或百分比。第二年，我们用普通血压计的内置微型计算机进行几乎相同的操作。在第三年，我们在气压计上加装了一个数据终端。一个64 K字节的RAM卡可以存储16条曲线，并在必要时将它们发送回电子血压计。此外，这些数据也被发送到个人电脑，以促进进一步的分析。鼻通畅率的表达是合理的，从鼻腔的空气动力学比较的角度来看，可以理解的从业者和准确的临床以及实验研究。少