Phase characteristics of rheograms. Original classification of phase-related changes of rheos

• Main Author: Mikhail Y. Rudenko
• Format: Article
• Language: English
• Published: Russian New University 2014-05-01
• Series: Cardiometry
• Subjects: ascending aorta; classification; ECG; Heart cycle phase analysis; impedance cardiography; phase related changes; Rheo
• Online Access: http://www.cardiometry.net/issues/no4-may-2014/phase-characteristics-of-rheograms

The phase characteristics of a rheogram are described in literature in general only. The existing theory of impedance rheography is based on an analysis of the form of rheogram envelopes, but not on the phase-related processes and their interpretation according to the applicable laws of physics. The aim of the present paper is to describe the phase-related characteristics of a rheogram of the ascending aorta. The method of the heart cycle phase analysis has been used for this purpose. By synchronizing an ECG of the aorta and a rheogram, an analysis of specific changes in the aorta blood filling in each phase is provided. As a result, the phase changes of a rheogram associated with the ECG phase structure are described and tabulated for first time. The author hereof offers his own original classification of the phase-related changes of rheograms.