ARTERIAL BLOOD-PRESSURE REGULATION OF PULPAL BLOOD-FLOW AS DETERMINED BY LASER DOPPLER
ARTERIAL BLOOD-PRESSURE REGULATION OF PULPAL BLOOD-FLOW AS DETERMINED BY LASER DOPPLER
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DOI：
10.1177/00220345890680050701
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发表时间：
1989-05-01
影响因子：
7.6
通讯作者：
SANJO, D
中科院分区：
文献类型：
--
作者：
SASANO, T;KURIWADA, S;SANJO, D
应用激光多普勒血流速度仪观察了静脉注射两种血管活性药物引起的狗牙髓血流量（PBF）和牙龈血流量（GBF）的动态变化。静脉注射去甲肾上腺素可引起PBF增加，与血压（BP）升高相对应，而GBF减少。与GBF增加相比，硫酸奥西肾上腺素导致PBF减少与BP减少平行。这些血管活性药物对GBF的作用持续时间长于对PBF和BP的作用。这些结果表明，牙髓中血流的调节更多地取决于全身血压，而不是局部血管收缩或血管舒张。
Dynamic changes of pulpal blood flow (PBF) and gingival blood flow (GBF) induced by intra-venous injection of two kinds of vasoactive drugs were observed in dogs by means of Laser Doppler Velocimetry. Intra-venous injection of norepinephrine caused PBF to increase, corresponding to the blood pressure (BP) increase, while GBF decreased. Orciprenaline sulfate caused PBF to decrease parallel to the BP decrease, as compared with a GBF increase. The effects of these vasoactive drugs lasted longer on GBF than on PBF and BP. These results indicate that the regulation of blood flow in the dental pulp is more dependent on systemic blood pressure than on local vasoconstriction or vasodilation.