Volovoĭ V L, Setrakian S A, Guliamov D S, Iliukhin V V
Kardiologiia. 1985 Mar;25(3):53-6.
A total of 46 patients with mitral regurgitation (MR) of varying degrees of manifestation and 84 subjects with no MR were investigated. The possibilities were elucidated of the MR diagnosis by the impedance index (IMR): the ratio of the primary diastolic wave O amplitude to the primary systolic wave amplitude (dz/dt)min of the impedance cardiogram. A significant increase of the IMR was recorded in the MR presence. The degree of such increase depended on the MR manifestation and not on the impairment of the left or right ventricle function. The high specificity and sensitivity of the method, the value of the negative and positive tests as well as their reproducibility evidence that impedance cardiography is a perspective method for the noninvasive diagnosis of MR.
共对46例有不同程度二尖瓣反流（MR）表现的患者和84例无MR的受试者进行了研究。阐明了通过阻抗指数（IMR）进行MR诊断的可能性：阻抗心动图中舒张期主波O振幅与收缩期主波振幅（dz/dt）min的比值。在存在MR的情况下，IMR显著升高。这种升高的程度取决于MR的表现，而不取决于左心室或右心室功能的损害。该方法具有高特异性和敏感性，阴性和阳性试验的值及其可重复性证明阻抗心动图是一种用于MR无创诊断的有前景的方法。
