本实驗性研究的目的在通过加压呼吸对血压及呼吸的影响,确定矽肺动物肺部感受器反应性变化的规律性。因肺内力压引起动脈血压的下降,除了反射性影响外,亦不能排除肺膨胀使胸内压增高,以致靜脈血囘流受阻和肺内压昇高后,小循环血流的障碍,引起心脏排出量減少的影 The purpose of this experimental study was to determine the regularity of pulmonary receptors’ reactivity changes by pressure breathing on blood pressure and respiration. Due to the pulmonary pressure caused by the decline in arterial blood pressure, in addition to the reflective effect, it can not rule out the expansion of the lung so that increased intrathoracic pressure, resulting in venous obstruction and pulmonary hypertension increased after the small blood flow disorders, caused Decreased cardiac output shadow