Riesen Sabine, Schmid Valerie, Gaschen Lorrie, Busato Andre, Lang Johann
Division of Radiology, Department of Veterinary Clinical Medicine, University of Berne, 3012 Berne, Switzerland.
Vet Radiol Ultrasound. 2002 Nov-Dec;43(6):554-60. doi: 10.1111/j.1740-8261.2002.tb01049.x.
The purpose of this study was to measure splanchnic blood flow during digestion in unsedated dogs by using duplex Doppler sonography. The study population consisted of 12 healthy dogs. Blood flow in the cranial mesenteric artery, the celiac artery, and the aorta was measured before a test meal and at 20, 60, and 90 minutes after eating. The following measurements were made or calculated: vessel diameter, peak systolic velocity, end diastolic velocity, mean velocity, resistive index, pulsatility index, and flow volume. There was a significant postprandial decrease in the resistive and pulsatility indices in both the cranial mesenteric (preprandial RI = 0.867, postprandial RI = 0.796, preprandial PI = 3.033, postprandial PI = 2.173) and the celiac (preprandial RI = 0.854, postprandial RI = 0.769, preprandial PI = 2.639, postprandial PI = 1.930) arteries. In both vessels the end diastolic velocity, the mean velocity, and the flow volume increased significantly postprandially. These changes occurred significantly earlier in the celiac artery than in the cranial mesenteric artery. The findings most likely correspond to postprandial splanchnic vasodilation. Doppler ultrasound provide a good methode of detecting changes in postprandial splanchnic blood flow in the dog.
本研究的目的是通过使用双功多普勒超声测量未镇静犬消化过程中的内脏血流量。研究对象包括12只健康犬。在试餐前进食前以及进食后20、60和90分钟测量肠系膜上动脉、腹腔动脉和主动脉的血流量。进行了以下测量或计算：血管直径、收缩期峰值流速、舒张末期流速、平均流速、阻力指数、搏动指数和血流量。肠系膜上动脉（餐前RI = 0.867，餐后RI = 0.796，餐前PI = 3.033，餐后PI = 2.173）和腹腔动脉（餐前RI = 0.854，餐后RI = 0.769，餐前PI = 2.639，餐后PI = 1.930）的阻力指数和搏动指数在餐后均显著降低。在这两条血管中，舒张末期流速、平均流速和血流量在餐后均显著增加。这些变化在腹腔动脉中比在肠系膜上动脉中出现得更早。这些发现很可能与餐后内脏血管舒张相对应。多普勒超声为检测犬餐后内脏血流量变化提供了一种很好的方法。
