Work Of Cardiovascular System Research Articles

Single Vibroacoustic Impact Effect of Singing Bowls over the Psycho-Emotional State and Cardiovascular System Work

This article presents a two-stage study result of the author's method of vibroacoustic massage using singing bowls application. At the first stage, the effect of vibroacoustic massage single application over psycho-emotional characteristics was studied. 19 studied volunteers took part in our study. The testing results before and after exposures were compared according to the WAM (Weighted average mark), Zung, and Spielberg-Khanin tests. The study of the psycho-emotional sphere showed that after the vibroacoustic massage procedure, the indicators of "well-being" and "activity" of the WAM test significantly improved (p = 0.002). In addition, the depression level determined by the Zung test, personal anxiety indicators (p = 0.004), and situational anxiety ones (p = 0.028) decreased. At the second stage, 62 volunteers were divided into two groups. The first group underwent a vibroacoustic massage session according to the patented author's method. The second group received only acoustic exposure using only singing bowls. Differences in the Kerdo index were revealed in the dynamics, and in the first group, the changes were less significant than in the second one. Changes in heart rate variability characteristics for both groups were similar: there was an increase in parasympathetic influences at rest and during the orthostatic test (increased levels of RMSSD (Root Mean Square of Successive Differences), NN50, pNN50) and a decrease in sympathetic effects at rest and their slight increase with orthostatic loading (TINN, RR triangular index). The dynamics were more significant in the first group that received a vibroacoustic massage session. When assessing changes in the neurovegetative regulation levels activity of the heart rhythm, the main difference was associated with very low-frequency waves power dynamics during the orthostatic test. Thus, vibroacoustic massage using singing bowls improves the psycho-emotional state, reduces depression and anxiety, and increases Parasympaticus (autonomic nervous system) activity.

Investigation of the functional state changes of cardio-vascular system in patients, suffering peritonitis

Objective. To study a functional state of cardio-vascular system in patients, suffering peritonitis.
 Materials and methods. Analysis of dynamics in the electrocardiogram changes in 166 patients, including 84 women and 82 men, was conducted for studying of functional state of cardio-vascular system in extended peritonitis.
 Results. Changes on electrocardiograms were non monotonous and depended on the peritonitis stage. In 28.3% patients diffuse changes in myocardium were observed, while in 43.9% - moderate. In 42.6% patients the disorders in metabolic processes in myocardium were revealed. Changes in conductivity and excitability were noted merely in half of the patients. Hypoxia was observed in 17.7% patients in reactive stage of peritonitis, in 32.0% - in a toxic, in 75.8% - in terminal. Tachycardia in a reactive stage of peritonitis was noted in 77.4% patients, in toxic one - in 89.3%, and in terminal - in 86.2% patients. In terminal stage of peritonitis in 13.8% patients bradycardia was noted. The blood supply disorders of various compartments of myocardium was revealed in 34.4% patients.
 Conclusion. Functional changes of cardio-vascular system in patients depends on stage of peritonitis. In all the patients, suffering peritonitis, medicinal correction of the cardio-vascular system work must be conducted, while its intensity depends on stage of peritonitis.

DEVELOPMENT OF AN ADROID APPLICATION TO SUPPORT THE HOLTER MONITORING SYSTEM

This paper examines the process of software development to implement the system, working on the devices with Android operating system, which is based on Holter monitoring. Application software has been developed using existing methods of digital data processing, that provides the possibility of real-time monitoring of the user's cardiovascular system with subsequent data transfer directly to a specialist doctor in a format, convenient for data analysis. There was proposed an algorithm for processing data, which is based on a template made up of regular expression metacharacters, that provides fast and accurate sifting of the received data. Binary file that is formed as a result of the algorithm work contains the necessary data for subsequent analysis. At the first stages, the software application installed on the Android device performs the initial analysis of the file and breaks the data into fragments that correspond to time periods of sixty minutes. Thus, twenty-four pieces of data are formed during the day. Based on this data created application builds graphs that illustrate the work of the patient's cardiovascular system, which the user can view. If critical indicators arise in the work of the cardiovascular system, the software application automatically calls an ambulance and sends to the attending physician data for the last forty-eight hours in the format of scatter plots, as the experience of practicing physicians has shown that such plots are the most visual and informative. Also, the attending physician has the opportunity to access the data of Holter monitoring of the user's cardiovascular system at any time, using the terminal part of the application on his Android device.

THE ROLE OF GROWTH DIFFERENTIATION FACTOR 11 (GDF11) IN REGULATION OF LIPID METAbOLISM AND CARDIOHEMODYNAMIC FUNCTIONS IN ESSENTIAL HYPERTENSION PATIENTS IN MODERATE EFFORT ExERCISES

Aim. To reveal the role of a “youth protein” GDF11 in regulation of lipid metabolism and cardiovascular system work in essential hypertension (EH) in women taking antihypertension medications and regularly involved in moderate physical exercises (kinesitherapy).Material and methods. In all participants, the level of GDF11 was measured by immune enzyme assay, and levels of lipids; registration was done of blood pressure, echocardiography and circulation condition with a novel sensor of dynamic light scattering (mDLS).Results. In women with AH taking antihypertension medications, the level of GDF11 was lower more than 3 times. In EH patients the deviations found, in a shear flow velocity with significant increase of rapid velocity processes. Correlations found for GDF11 level with the age, blood pressure, condition of the heart work, hemodynamical and oscillatory indexes. In the EH group patients regularly doing exercises (kinesitherapy), the level of GDF11, blood pressure, lipid profile and all parameters of heart work and hemodynamics are close to normal.Conclusion. The “youth protein” CDF11 is a factor of prevention of AH. Kinesitherapy in EH patients normalizes GDF11, lipid profile, and significantly increases the work of cardiovascular system.

Dynamics of cardiovascular system on the test of physical performance in children of young school age with vision defects

The article is devoted to the study the dynamics of the work of cardiovascular system in children of young school age with vision pathology of tests for physical performance. Study was conducted among 85 children, aged from 7 to 10 years: including 48 boys and 37 girls, in which found that blind and poor-sighted children lag behind the children of the same age in terms of pulse pressure, systolic blood volume, actual and relative maximal aerobic power. Pulse tolerance limit, on the contrary, is higher than that of healthy children.

Путь к сердцу человека: как гормон роста влияет на работу сердечно-сосудистой системы

Путь к сердцу человека: как гормон роста влияет на работу сердечно-сосудистой системы

Physiological Parameters Monitoring System for Occupational Safety

A wireless physiological parameters monitoring system designed for workers to observe their health conditions during daily activities was proposed and analyzed in our work. This system meant to protect people from accidents and sudden health impairments at work. The key part of the system is wearable sensors that follow human respiratory function and cardiovascular system work. Remote computer evaluates one’s health condition by tracking the abnormal deviations of the two main physiological parameters – heart rate and respiratory rate. Attention in this paper was focussed on suppression of the signal noise caused by body movement artefacts. Some new algorithms of the data processing were developed to this end. The proposed monitoring system was assembled and calibrated against standard medical monitor. Results of the system accuracy test are presented in this paper. DOI: http://dx.doi.org/10.5755/j01.eee.20.5.7100

On conditions of negativity of friction resistance for non- stationary modes of blood flow and possible mechanism of affecting of environmental factors on energy effectiveness of cardiovascular system function

It is shown that initiated by action of molecular viscosity impulse flow, directed usually from the moving fluid to limiting it solid surface, can, under certain conditions, turn to zero and get negative values in the case of non-stationary flow caused by alternating in time longitudinal (along the pipe axis) pressure gradient. It is noted that this non-equilibrium mechanism of negative friction resistance in the similar case of pulsating blood flow in the blood vessels, in addition to the stable to turbulent disturbances swirled blood flow structure providing, can also constitute hydro-mechanical basis of the observed but not explained yet paradoxically high energy effectiveness of the normal functioning of the cardiovascular system (CVS). We consider respective mechanism of affecting on the stability of the normal work of CVS by environmental variable factors using shifting of hydro-dynamic mode with negative resistance realization range boundaries and variation of linear hydro- dynamic instability leading to the structurally stable swirled blood flow organization.

Mediator sensitivity of primary afferent cells in the spinal cord of the lamprey Lamperta fluviatilus

Analyzed are changes of temporal and amplitude characteristics of the cycles in animals in different functional states, using a non-invasive method of recording of cardiac activity in the adult noble crayfish Astacus astacus L. under laboratory conditions. It has been shown that the state of excitation in the crayfish after action of an intense stimulus lasts for a long time (more than 1 h) and can have no manifestations in some observed behavioral responses. Based only on the cardiac response (the heart rate), the real physiological state of the animal could be evaluated. Characteristic of the excited animal is a short-term response to the stimulus. In a high excitement of the animal (a high heart rate), significant transformations of the heart activity in response to other current stimuli may be barely noticeable. For the quiet animal, the response to a stimulus is longer than for the excited animal at the same stimulus intensity; for a comparative search for significant readjustments of the animal state, based on the heart activity parameters, the cardiograms typical of the quiet animal should be used. In the quiet animals, the cardiogram parameters change to a greater extent than in the excited ones. The quiet animals have longer diastole duration (DD) than the systole duration (SD). The diastole amplitude (DA) is higher than the systole amplitude (SA), and DA changes more markedly than SA. The healthy animals are characterized by equal values of DD and SD, sometimes by longer SD than DD, but, on the background of a continuing action, their values and the values of DA and SA become equal. There were noted a negative correlation between the systolic and diastolic phases by temporal parameters for healthy animals and an increase of the correlation significance in transition of the animal into the excited state. Based on the cardiovascular system response, the chief features of a shift of the functional crayfish state to pathological direction seem to include a stable heart rate reduction, a decrease of the heart contraction amplitude, a more frequent predominance of SD over DD, an increase of the means and the standard deviations of the parameters, especially of the cycle amplitudes. Changes of the sign and significance of correlation relations between inotropic and chronotropic parameters of cardiac activity in sick animals appear to indicate a disturbed mechanism of central coordination of the cardiovascular system work with its autonomic mechanisms. The results are discussed on the basis of known mechanisms of the heart activity control in Decapoda. The records of cardiac activity, such as laser light cardiograms (LLC), in testaceous invertebrates may be useful and interesting in studies on mechanisms and processes of internal control and management of the cardiovascular system activity of the animals.