Urbaszek W, Löwe H R, Rentsch W, Pankau H, Günther K
Z Gesamte Inn Med. 1976 Aug 1;31(15):567-74.
The index of isometric contraction formed from the quotient period of isometric contraction in the erect position by period of isometric contraction in lying position gives the possibility to separate between cardially sufficient and cardially insufficient patients with adequately disturbed regulation of the cardiac circulation. The recognition of early stages of the disturbed left-ventricular function is possible. The use of an adequate exact technique in gaining the primary data is to be presumed. Corrections of the frequency of the index of isometric contraction do not improve the evidence. In the borderline region of the index of isometric contraction with values between 1.03 and 1.1 in questionable cases a further differentiation into still normal or already latent insufficient will do by the analysis of the trend of the index of isometric contraction after the application of medicaments. The determination of the change of the direction of the index of isometric contraction after peroral application of nitroglycerin would be justifiable in routine work after the recognition of the initiaction increases in patients with latent heart insufficiency, in patients with a healthy heart it decreases. The clinical value of the index of isometric contraction as a simple test of the circulatory function is highly to be estimated.
由直立位等长收缩期与卧位等长收缩期的商值构成的等长收缩指数，使得区分心脏功能正常和心脏功能不全且心脏循环调节充分紊乱的患者成为可能。识别左心室功能紊乱的早期阶段是可行的。假定在获取原始数据时采用了足够精确的技术。对等长收缩指数频率的校正并不能提高证据力度。在等长收缩指数处于1.03至1.1之间的临界区域，对于可疑病例，通过分析用药后等长收缩指数的趋势可进一步区分为仍属正常或已处于潜在不足状态。在识别出潜在心力衰竭患者初始增加情况后，口服硝酸甘油后等长收缩指数方向变化的测定在常规工作中是合理的，对于心脏健康的患者，该指数会降低。等长收缩指数作为循环功能的一种简单检测方法，其临床价值非常值得评估。
