Ask P, Oberg A, Tibbling L
Am J Physiol. 1977 Nov;233(5):E389-96. doi: 10.1152/ajpendo.1977.233.5.E389.
Esophageal manometric systems with water-filled catheters have been characterized by the use of model experiments. The examined parameters have been: catheter dimension, catheter compliance, catheter resistance, pump type, pump compliance, and perfusion flow. Accurate static pressure measurements have been obtained for perfused systems independently of the investigated parameters. The dynamic characteristics vary with catheter diameter and perfusion flow. For catheters with low diameter, a narrow bandwidth is obtained for the investigated perfusion flows. The results have been expressed in terms of an electric model of the measurement system. Perfusion pumps with low compliance are recommended to improve the dynamic properties of the measurement system.
采用充水导管的食管测压系统已通过模型实验进行了特性描述。所检测的参数包括：导管尺寸、导管顺应性、导管阻力、泵的类型、泵的顺应性以及灌注流量。对于灌注系统，已独立于所研究的参数获得了精确的静压测量值。动态特性随导管直径和灌注流量而变化。对于直径较小的导管，在所研究的灌注流量下可获得较窄的带宽。结果已根据测量系统的电学模型进行了表述。建议使用顺应性低的灌注泵来改善测量系统的动态特性。
