无明显实质性肺部疾患的肺动脉高压,可见于原发性肺动脉高压及肺栓塞反复发作后的患者。对这两种患者有选择性地应用各种血管扩张剂治疗,能有效地改善血流动力学。妨碍其临床应用的一个主要原因是,缺乏一种易行的、非创伤性的检测心肺功能状态改变指数的方法,以替代定期心导管术监测治疗效果。最近,有报道称,运动时可达到最大运动耗氧量 No significant pulmonary disease of pulmonary hypertension, seen in patients with recurrent pulmonary hypertension and pulmonary embolism. Selective treatment of these two kinds of patients with vasodilators can effectively improve hemodynamics. A major obstacle to its clinical application is the lack of an easy and non-invasive method for detecting changes in cardiorespiratory status index, which can be used as an alternative to regular cardiac catheterization to monitor the therapeutic effect. Recently, it has been reported that exercise can achieve maximum exercise oxygen consumption