Herrmann G, Rentsch W
Z Gesamte Inn Med. 1976 May 15;31(10):312-7.
It was shown that reduction in exercise capacity because of latent heart insufficiency could be significantly demonstrated by the so-called pre-ejection index PI, measured under conditions of rest. On the other hand, normals did not show any significant interrelation between PI and parameters related to exercise capacity, obtained by spiroergometric measurements. The pre-ejection index PI is a non-invasive parameter which compares the pre-ejection period in upright and supine posture. Since spiroergometric measurements could not be made under vita-maxima conditions, PI values were compared with parameters of submaximal exercise. Exercise was performed on the bicycle ergometer, with oxygen consumption and heart rate being recorded. Measuring results also revealed that by means of the pre-ejection index the necessity and effectiveness of glycoside medication may be objectively defined. Measuring techniques are described and statistically processed data are presented.
结果表明，静息状态下测量的所谓射血前期指数PI能够显著显示出因潜在性心脏功能不全导致的运动能力下降。另一方面，正常人群中PI与通过运动心肺功能测量获得的运动能力相关参数之间未显示出任何显著的相关性。射血前期指数PI是一个非侵入性参数，用于比较直立和仰卧姿势下的射血前期。由于无法在最大运动状态下进行运动心肺功能测量，因此将PI值与次最大运动参数进行了比较。在自行车测力计上进行运动，并记录耗氧量和心率。测量结果还表明，通过射血前期指数可以客观地确定糖苷类药物治疗的必要性和有效性。文中描述了测量技术并给出了经统计处理的数据。
