Influence of optical environment on arterial pressure change

利用太阳光学模拟器研究了不同光学环境对血压控制系统的影响。我们在成年猫身上植入了测量动脉血压的遥测装置。连续记录猫在自由运动状态下的动脉血压，每smsec一次，持续24小时。通过观察动脉血压波形的峰值间隔来测量热率。利用太阳光谱（280nm-2800nm）、可见光谱（400nm-750nm）和紫外光谱（290nm-400nm）三种光谱对光环境进行了检测。照射时间为3小时，时间为19:30 - 22:30。平均动脉血压、最大dp/dt和心率在照射前30分钟显著升高，照射后趋于平缓。这些变化在太阳光谱、可见光谱和紫外光谱这三种光谱中都有类似的观察。此外，当尝试进行小波变换分析计算最大dp/dt变化时，观察到约0.016Hz水平的特征变化。这些结果表明存在一种受光照刺激的调控机制。这种反应同样可以用紫外线得到。

The influence of some optical environments on the blood pressure control system was examined using the sun optical simulator. We used adult cats in which the telemetry device for measurement of arterial blood pressure had been implanted. The arterial blood pressure of the cat under free action was continuously recorded every Smsecs for 24 hours. Heat rate was measured by observing the peak interval of the arterial blood pressure wave form. The optical environment was examined using three kinds of spectrum, solar spectrum (280nm-2800nm), visible spectrum (400nm-750nm), and ultraviolet spectrum (290nm-400nm). The irradiation was conducted for three hours, between 19 :30 - 22 :30.The mean arterial blood pressures, the max dp/dt, and the heart rate increased significantly during the first 30 minutes under the irradiation, and quietened down afterwards. These changes were similarly observed in all three kinds of spectrum, solar spectrum, visible spectrum, and ultraviolet spectrum. In addition, when the wavelet transform analysis was attempted to calculate the max dp/dt change, a characteristic change of a level of about 0.016Hz was observed.These results show the existence of a regulation mechanism which is stimulated by irradiating light. This reaction is similarly obtained with ultraviolet rays.