Nielan G J, Rehder R S, Ducharme N G, Hackett R P
Equine Performance Testing Clinic, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853.
Vet Surg. 1992 Nov-Dec;21(6):423-8. doi: 10.1111/j.1532-950x.1992.tb00075.x.
A nasotracheal catheter for measuring tracheal static pressure in exercising horses was designed according to aerodynamic engineering principles. Small ports near the end of the catheter transmitted pressure fluctuations to the recording apparatus. Accuracy was determined by the size, number, and location of pressure sensing holes on the catheter, and by the position of the catheter in the trachea. The catheter had adequate frequency response to 33 Hz, was insensitive to movement artifacts, was easily introduced, was tolerated well by horses, and resulted in small ventilatory impairment at maximal exertion.
一种用于测量运动马匹气管静压的鼻气管导管是根据空气动力学工程原理设计的。导管末端附近的小端口将压力波动传递到记录设备。准确性取决于导管上压力传感孔的大小、数量和位置，以及导管在气管中的位置。该导管对33Hz有足够的频率响应，对运动伪影不敏感，易于插入，马匹耐受性良好，并且在最大运动时导致的通气损害较小。
