Duplex-ultrasonographic evaluation of the common carotid artery in the resting, sedated and anesthetized horse.
Duplex-ultrasonographic evaluation of the common carotid artery in the resting, sedated and anesthetized horse.
复制标题
对休息、镇静和麻醉的马的颈总动脉进行双重超声检查评估。
DOI：
10.1111/j.1740-8261.2000.tb01472.x
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
H. Meier
中科院分区：
文献类型：
--
作者：
N. Schmucker;U. Schatzmann;K. Budde;M. Gundel;C. Jäggin;H. Meier
本研究的目的是用双功能超声检测氟烷麻醉期间颈动脉的血流量。对17匹温血马进行了背侧卧位测试，并与安静和镇静状态下的测试结果进行了比较。测定血管横截面积、时均最大血流速度、时均最大血流速度和阻力指数，评价血流频谱。在氟烷麻醉期间，总血流量显着增加，这不依赖于马的位置。平均血流速度因镇静而降低，在麻醉过程中显著增加。外围电阻的降低表现为阻力指数的下降。镇静后和卧位时，颈动脉直径增加。
The aim of this study was to determine the blood flow in the carotid artery during halothane anaesthesia by means of duplex-sonography. Seventeen warm blood horses were evaluated in dorsal and lateral recumbency and the results were compared with the values of the same horses resting and under sedation. The cross sectional area of the vessels, the time-averaged maximal blood velocity, time-averaged maximal blood flow and the resistance index were determined and the flow profile was evaluated. During halothane anesthesia the total blood flow shows a significant increase which is not dependent on the positioning of the horse. Mean blood velocity is decreased by sedation and significantly increased during anesthesia. Reduced peripheral resistance is expressed by a decline of the resistance index. After sedation and during recumbency there is an increase in diameter of the carotid artery.