Showing papers in "Cardiometry in 2012"
TL;DR: The innovative method of cardiovascular system diagnostics enables to measure 7 main hemodynamic parameters using noninvasive technology for qualitative evaluation of 12 functions ofiovascular system performance and general assessment of coronary flow status.
Abstract: Corresponding author: Phone: +7 (8634) 31-24-03. E-mail: cardiocode@mail.ru Available from: http://www.cardiometry.net/issues/no1-november-2012/theoretical-principles-of-cardiometry.pdf Aims The article aims at describing the theoretical principles of cardiometry as a fundamentally new scientific field which enables the accurate measurement of the cardiovascular system parameters. Materials and methods Cardiometry is based on the mathematical model of hemodynamic processes. The model is described by G. Poyedintsev and O. Voronova equations. The variable values in these equations are the cardiac cycle phase durations recorded on the ECG. An original ECG lead of the ascending aorta reflects all the processes of the heart performance. Thus, it is possible to calculate the phase blood volumes. This method is an accurate indirect measurement method. The synchronous recording of the ascending aorta ECG and Rheogram enables monitoring of the compensation mechanism responsible for the normal hemodynamic performance. Results An innovative mathematical model of hemodynamics providing the creation of an innovative indirect method for measurement of the cardiovascular system parameters was developed. Conclusion The innovative method of cardiovascular system diagnostics enables to measure 7 main hemodynamic parameters using noninvasive technology for qualitative evaluation of 12 functions of cardiovascular system performance and general assessment of coronary flow status. Keywords Сardiometry
15 citations
TL;DR: In this paper, a new condition Re > Re th min ≈ 124 of linear instability of the Hagen-Poisseuille (HP) flow with respect to extremely small by magnitude axially-symmetric disturbances of the tangential component of the velocity field is obtained.
Abstract: A new condition Re > Re th min ≈ 124 of linear (exponential) instability of the Hagen-Poisseuille (HP) flow with respect to extremely small by magnitude axially-symmetric disturbances of the tangential component of the velocity field is obtained. The disturbances necessarily shall have quasi-periodic longitudinal variability along the pipe axis that corresponds to the observed data. Conclusion We show that the obtained estimate of value of Re th min corresponds to the condition of independence of the main result (on the linear instability of the HP flow when Re > Re th min ) from the procedure of averaging used in the Galerkin approximation. Thus, we obtain the possible natural mechanism for the blood swirling flows formations observed in the aorta and the large blood vessels.
4 citations
TL;DR: An innovative methodology that is easy to use and very efficient, therefore, it can be widely applied in practice and revealing the primary cause of the cardiovascular system pathology is offered.
Abstract: A change in the form of an ECG phase segment reflects qualitatively the actual contraction performance of the respective cardiac muscle part involved. In case when the contraction of a cardiac muscle part is weak, an adjacent part undertakes the required compensation function in order to adjust the process. The causality analysis allows identifying the primary cause of a pathology which makes impossible to maintain the proper phase-related blood volumes within the norms. Results An evaluation of the hemodynamic self-regulation mechanism on the basis of the analysis of the compensation mechanism responsible for the maintenance of the hemodynamic parameters within the norms allows revealing the primary cause of the cardiovascular system pathology. Conclusion We offer an innovative methodology that is easy to use and very efficient, therefore, it can be widely applied in practice.
3 citations
TL;DR: Cardiometric diagnostics and control of anti-androgenic drug adverse effects on cardiovascular system Vladimir A. Zernov.
Abstract: www.cardiometry.net No.1 November, 2012 57 Cardiometric diagnostics and control of anti-androgenic drug adverse effects on cardiovascular system Vladimir A. Zernov* 1 Russian New University, 105005, Russia, Moscow, Radio str., 22 * Corresponding author: Phone: +7 (8634) 31-24-03. E-mail: cardiocode@mail.ru Available from: http://www.cardiometry.net/issues/no1-november-2012/cardiometric-diagnostics-andcontrol.pdf
2 citations
TL;DR: Cardiometry.net No.1 November, 2012 48 Study of central hemodynamic parameters in pediatric burn shock patients using the method of the heart cycle phase analysis.
Abstract: www.cardiometry.net No.1 November, 2012 48 Study of central hemodynamic parameters in pediatric burn shock patients using the method of the heart cycle phase analysis Vladimir A. Vecherkin, Victor A. Ptitsin, Olga K. Voronova 1 Voronezh State Medical Academy Named after Bourdenko, 394036, Voronezh, Student str. 10 2 Russian New University, 105005, Russia, Moscow, Radio str. 22 * Corresponding author: Phone: +7 (473) 237-28-32. E-mail: vecherkinva@mail.ru Available from: http://www.cardiometry.net/issues/no1-november-2012/study-of-central-hemodynamicparameters.pdf
2 citations
TL;DR: Comparative study of measured heart cycle phase durations: standard lead ECGs versus original ascending aorta lead ECG Sergey V. Kolmakov.
Abstract: www.cardiometry.net No.1 November, 2012 143 Comparative study of measured heart cycle phase durations: standard lead ECG versus original ascending aorta lead ECG Sergey V. Kolmakov 1 Oy Cardiocode-Finland Ltd., Dunckerinkatu 5 as. 1, FIN-70500 Kuopio, Finland * Corresponding author: Phone: +358(0)17 2613475; E-mail: sergei.kolmakow@gmail.com Available from: http://www.cardiometry.net/issues/no1-november-2012/heart-cycle-phase-durations.pdf
1 citations
TL;DR: An original ECG lead of the ascending aorta is proposed that identifies the boundaries of the rapid and slow ejection phases of the ECG waves and will contribute to quality improvement of the diagnostics performed by practising physicians.
Abstract: An original ECG lead of the ascending aorta is proposed. It identifies the boundaries of the rapid and slow ejection phases. The concepts and description of the ECG waves are introduced. The amplitudes of the ECG waves are used to characterize the contraction of the muscles of the cardiovascular system segments. Results The general principles of the ECG standardization based on the amplitude analysis of the ECG waves are described. Conclusion Development of the standardization system will contribute to quality improvement of the diagnostics performed by practising physicians.
1 citations
TL;DR: An innovative mathematical model of hemodynamics providing the creation of an innovative indirect method of cardiovascular system parameters measurement was developed in this paper, where the ECG processing is performed by means of the wavelet transform for detecting the boundaries of the cardiac cycle phases.
Abstract: An innovative mathematical model of hemodynamics providing the creation of an innovative indirect method of cardiovascular system parameters measurement was developed. The ECG processing is performed by means of the wavelet transform for detecting the boundaries of the cardiac cycle phases. Conclusion The innovative method of cardiovascular system diagnostics enables to measure 7 main hemodynamic parameters using noninvasive technology for qualitative evaluation of 12 functions of cardiovascular system performance and general assessment of coronary flow status. One of the problems the model of hemodynamics deals with is identifying the boundaries of the cardiac cycle phases. To identify the boundaries of the cardiac cycle phases the method of finding the extrema on the initial ECG and the differentiated ECG basing on the wavelet transform was used.
TL;DR: An innovative noninvasive measuring technology originally developed by a Russian R & D team offers measuring stroke volume of blood SV with a high accuracy, and takes into account some possible errors in measurements caused by hardware.
Abstract: The comparative data obtained in the study show an averaged difference at the level of 1%. An innovative noninvasive measuring technology originally developed by a Russian R & D team offers measuring stroke volume of blood SV with a high accuracy. Conclusion In practice, it is necessary to take into account some possible errors in measurements caused by hardware. Special attention should be paid to systematic errors.
TL;DR: Interrelation between the changes of phase functions of cardiac muscle contraction and biochemical processes as an algorithm for identifying local pathologies in cardiovascular system is studied.
Abstract: www.cardiometry.net No.1 November, 2012 87 Interrelation between the changes of phase functions of cardiac muscle contraction and biochemical processes as an algorithm for identifying local pathologies in cardiovascular system Yury V. Fedosov, Stanislav N. Zhigalov, Mikhail Y. Rudenko, Olga K. Voronova, Vladimir A. Zernov 1 Russian New University, 105005, Russia, Moscow, Radio str., 22 * Corresponding author: Phone: +7 (8634) 31-24-03. E-mail: cardiocode@mail.ru Available from: http://www.cardiometry.net/issues/no1-november-2012/interrelation-between-the-changesof-phase-functions.pdf