Open Access e-Journal Cardiometry No.16 May 2020

REPORT Submitted: 2.02.2020; Accepted: 18.03.2020; Published online: 21.05.2020
The study of hemodynamics in
critical patients under intensive
care unit conditions
David М.Tamrazyan 1 *, Alla I. Shikhlyarova 2 , Oleg N. Kopylov 1 ,
Olga G. Pyagai 1
1
Kuban Medical University
Russia, 350015, Krasnodar, Budennogo st., 198
2
Rostov Research Institute of Oncology, Ministry of
Healthcare of the Russian Federation
Russia, 344037, Rostov-on-Don, 14th Line st. 63
*
Corresponding author:
e-mail: david97-25@mail.ru
phone: +7 (923) 795-33-55
Introduction
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. Of course it is reasonable that, according to
the relevant methodology, all the data should be recorded on
the 'here-and-now' basis, in real time, to enable rapid decision-making
in order to save the patient's life.
Keywords
Hemodynamics, Resuscitation, ECG
Imprint
David М.Tamrazyan, Alla I. Shikhlyarova, Oleg N. Kopylov, Olga
G. Pyagai. The study of hemodynamics in critical patients under
intensive care unit conditions. Cardiometry; Issue 16; May
2020; р.74-77; DOI: 10.12710/cardiometry.2020.16.7477; Available
from: http://www.cardiometry.net/issues/no16-may-2020/
hemodynamics-in-critical-patients
Introduction
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. Of course it is reasonable that,
according to the relevant methodology, all the data
should be recorded on the 'here-and-now' basis, in
real time, to enable rapid decision-making in order to
save the patient's life. Such possibilities have not been
available. Only heart rate and blood circulation were
monitored, i.e. the parameters that can be informatively
evaluated post factum only and that cannot be
used to predict the organism state. This paper presents
results of noninvasive examinations in critical
patients in an intensive care unit with the use of the
cardiometric method. The method is implemented
using device Cardiocode designed and manufactured
for cardiology diagnostics [2]. Using the device it becomes
possible to estimate the boundaries of critical
states, which allows predicting the development of
the patient’s condition and make adequate decisions
without any delay at the bedside.
Aims
The aim of the study is to analyze the hemodynamics
data recorded in critical patients under the intensive
care unit conditions.
Methods
The methods thereof is based on the ECG recording,
identification of the cardiac cycle phases and the
automatic mathematical calculation of the following
parameters:
1. Hemodynamic parameters
SV - stroke volume of blood, ml;
MV - minute volume, l/min;
PV1 - volume of blood entering the ventricle during
early diastole phase, ml;
PV2 - volume of blood entering the left ventricle
during atrial systole, ml;
PV3 - volume of blood ejected by the ventricle during
rapid ejection phase, ml;
PV4 - volume of blood ejected by the ventricle during
slow ejection phase, ml;
74 | Cardiometry | Issue 16. May 2020