Studies on Assessment of Psycho physiological Stress using Multipurpose Noninvasive Cardiovascular RegulationMonitoring Systems

使用多功能无创逐拍心血管监测系统，在应激任务中评估应激诱发的心血管反应和新设计的微型慢呼吸引导装置作为应激缓解方法的有效性，以量化精神和身体应激状况的程度。由首席研究员设计的多功能无创逐拍心血管监测系统可以提供基于体积补偿法的逐拍血压、基于心阻抗/导纳图的心输出量以及相同的生理相关参数，如呼吸频率、脉搏波速等。采用微型振动电机制作了微型慢呼吸引导装置，在急性应激任务、算术和冷加压时，慢呼吸(6次/min)引导装置显著降低了应激诱发的心血管反应性，尤其是血压和热心率(n=7，p&lt；0.05)。将心血管监护仪和呼吸控制器相结合的原型系统在日常生活中对血流动力学变化的自我监测以及自我护理改善心血管功能方面具有实用价值和帮助。

Using a multipurpose noninvasive beat-by-beat cardiovascular monitoring system, stress-induced cardiovascular re activities and effectiveness of newly designed miniature slow-breathing guiding device as stress reduction method were evaluated within stressful tasks to quantify the degree of mental and physical stress conditions. The multipurpose noninvasive beat-by-beat cardiovascular monitoring system designed by head investigator could offer beat-by-beat blood pressure based on the volume compensation method, cardiac output based on the electric impedance/admittance cardiography and same physiological related parameters, such as respiration rate, pulse wave velocity and so on. The miniature slow-breathing guiding device was fabricated using a miniature vibration motor.In the acute stressful tasks, arithmetic and cold pressor, the stress-induced cardiovascular reactivities were significantly reduced with the slow-breathing (6 rate/min) guiding device especially blood pressure and heat; rate (n=7, p<0.05). The prototype system combining the cardiovascular monitor with the breath controller appears to be useful and helpful in terms of self-monitoring of hemodynamic changes as well as self-care for the improvement of the cardiovascular function during daily living.