Whether this hyperresponsiveness resides in the sympathetic nervous system itself or in the myocardium and vascular smooth muscle that it innervates is unknown, but it can often be detected before sustained hypertension develops.
这种高反应性是存在于交感神经系统本身还是存在于受神经支配的心肌和血管平滑肌尚不清楚,但是,在持续性高血压发生之前常常可以发现这种高反应性。