Tsunoda S, Shindo K, Shiozawa Z, Mano T
Department of Medicine, Neurology, Yamanashi Medical University, Japan.
J Auton Nerv Syst. 1991 May;33(3):277-81. doi: 10.1016/0165-1838(91)90028-2.
The purpose of this study was to determine the relationship between muscle sympathetic nerve activity (MSA) to calf muscle and calf vascular resistance with head-up tilting in humans. In nine healthy volunteers, we performed simultaneous measurements of MSA using microneurography and calf vascular resistance using electrical impedance plethysmography in the same leg. The volunteers were laid on a tilt table and the examinations with head-up tilting (0 degrees, 30 degrees, 60 degrees) were performed. Corresponding to the increase in angles of head-up tilting, MSA and calf vascular resistance significantly increased. A statistically significant positive linear correlation was demonstrated between MSA and calf vascular resistance. These data suggest that impedance plethysmographic measurement of calf vascular resistance can be reliably used to assess the status of MSA with head-up tilting.
本研究的目的是确定人体在头高位倾斜时小腿肌肉的肌肉交感神经活动（MSA）与小腿血管阻力之间的关系。在9名健康志愿者中，我们使用微神经ography同时测量了同一侧小腿的MSA，并使用电阻抗体积描记法测量了小腿血管阻力。志愿者躺在倾斜台上，进行头高位倾斜（0度、30度、60度）检查。随着头高位倾斜角度的增加，MSA和小腿血管阻力显著增加。MSA与小腿血管阻力之间存在统计学上显著的正线性相关性。这些数据表明，电阻抗体积描记法测量小腿血管阻力可可靠地用于评估头高位倾斜时MSA的状态。
