Open Access e-Journal Cardiometry No.16 May 2020

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The study of hemodynamics in
critical patients under intensive
care unit conditions
David М.Tamrazyan, Alla I. Shikhlyarova,
Oleg N. Kopylov, Olga G. Pyagai
Studies of hemodynamics in critical patients under intensive
care unit conditions have been a very difficult task
until now [1]. There are a number of reasons for that. No
instruments capable of noninvasively recording data on
hemodynamics and metabolism, as well as the cardiovascular
system performance, could be used.
Evaluation of general repolarization of
cardiomyocites with biphasic pulses of
different shapes
Nikolay N. Chernov, Aleksandr A. Bezverkhii,
Vladimir I. Timoshenko
According to data provided by the European Resuscitation
Council (ERC), 76% of sudden cardiac arrests should
be attributed to ventricular fibrillation. The main treatment
of this disease is an immediate cardiopulmonary resuscitation,
one of the components of which is a defibrillation
of abnormal rhythms.
Polynomial filtering of low- and highfrequency
noise for improving the accuracy
of ECG signal processing: new advancements
Yeldos A. Altay, Artem S. Kremlev
The article describes a solution of the ECG signal processing
problem in the presence of low- and high- frequency
noises, which reduce the accuracy of selection of the signal
informative parameters during their processing. To increase
the accuracy of the signal informative parameters selection,
developed is a new method for noise filtering based on
a polynomial approximation of high frequency filters and
wide-band reject filters using Newton polynomials.
Review of the recommender systems
application in cardiology
Konstantin V. Kamyshev, Viktor M. Kureichik,
Ilya M. Borodyanskiy
The article provides a review of the recommender systems
application in medical field, cardiology, in particular.
The concept of recommender systems is defined, the brief
history of the recommender systems development is given.
The main types of recommender systems and principles
of their construction are presented. The advantages
and disadvantages of the recommender system methods
application in cardiology are identified.
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Effects produced by electrode
characteristics on the accuracy of
formation of electrical cardiac signal
parameters
Yeldos A. Altay, Artem S. Kremlev, Sergei M. Vlasov,
Alexey A. Margun, Konstantin A. Zimenko
Our results of analyzing effects made by electrode characteristics
on the accuracy of the ECG signal parameters
formation are presented herein. Analyzed is a correlation
between the measured characteristics of the electrodes
and a probability value that determines accuracy of the
ECG signal parameters formation. With the help of scatter
plots demonstrated is the strength of the correlation between
the assessed variables.
Rose Angina Score can really estimate
myocardial perfusion scan results in both
diabetic and non-diabetic patients?
Nasim Namiranian, Aryan Naghedi, Narges Soltani,
Reza Nafisi Moghadam, Amir Pasha Amel Shahbaz,
Seid Kazem Razavi-Ratki
Cardiovascular diseases are among the most important
causes of mortality and morbidity worldwide. There are
different risk factors explained for cardiovascular diseases
and diabetes mellitus (DM) is notable among them. There
are different modalities for diagnosis and risk assessment
of cardiovascular diseases such as myocardial perfusion
imaging (MPI) but considering high price and low accessibility
of this modality we decided to assess any possible
association between MPI findings and Rose angina score
(RAS) in both diabetic and non-diabetic patients.
Effects produced by automated
plasmapheresis on morphofunctional data
on cardiovascular system performance in
ischemic heart disease patients
Yury.E. Malchevsky, Aligeidar A. Ragimov
We have performed the study of the effects made by the
automated plasmapheresis application on ischemic heart
disease clinical manifestations, echocardiographic indices
and heart rate variability in patients with exertional angina
III-IV functional class. It has been found that the applied
plasmapheresis method is capable to reduce the severity
of the disease clinical manifestations and improve the
echocardiographic characteristics of the heart, in particular,
reduce the level of end-diastolic volume, and increase
ejection fraction. The clinical effect is already apparent at
the early stages of the treatment and remains unchanged
even after 6 months thereof.
Issue 16. May 2020 | Cardiometry | 5