【摘要】 为探讨姿势对脑血流速度(cerebral blood flow velocity,CBFV)的影响,应用CBS—II经颅多普勒诊断系统,分别在卧位、坐位、蹲位和站位安静时,对20名男女大学生的大脑中动脉平均血流速度(MCAVmean)进行了检测,并对检测值进行了方差分析。得出不同的姿势对脑血流速度的影响不同,由一种姿势转换成另一种姿势时,脑血流速度会发生显著的变化的结论。更多还原

【Abstract】 Objective: To investigate the effect of posture on cerebral blood flow velocity,we employ the methods belowed: In twenty male and female college students,middle cerebral artery mean blood flow velocity(MCAV_mean) was evaluated by using CBS-II transcranial Doppler at rest in the supine,in the sitting,in the squatting and in the standing position respectively.The measured values were analysed by analysis of variance. Results: MCAV_mean is 61.71±5.93cm·s^-1、54.49±6.58 cm·s^-1、49.82±5.62 cm·s^-1and 39.84±5.55 cm·s^-1 at rest in the supine,in the sitting,in the squatting and in the standing position respectively.MCAV_mean is highest at rest in the supine position and is lowest at rest in the standing position among four different position.In male and female subjects,difference of MCAV_mean at rest in the sitting position from in the squatting position,and in male subjects,difference of MCAV_mean at rest in the supine position from in the sitting position are not significant（P>0.05）.Difference of MCAVmean at rest between the other position is significant（P<0.05）.Conclusion: Different posture affects cerebral blood flow velocity differently.Cerebral blood flow velocity will change significantly when one posture shifts to another one.更多还原