The influence of psychological stress on the cardiovascular system of students of the Faculty of Biology and Chemistry in interaction with the orthostatic test

2021 ◽  
pp. 24-33
Author(s):  
Svetlana Vasilievna Moriakina ◽  
Vakha Askhadovich Anzorov
Keyword(s):  
Cardiovascular System ◽  
Psychological Stress ◽  
Scientific Article ◽  
Hemodynamic Parameters ◽  
Orthostatic Test ◽  
Severe Stress ◽  
Adaptive Mechanisms ◽  
Examination Stress

The scientific article is devoted to the study of indicators of the cardiovascular system in students under examination stress. As a result of our research, we recorded that before the start of the exam and after its completion, the students experienced severe stress, which negatively affected the results of the hemodynamic parameters study that showed high values indicating an overstrain of the adaptive mechanisms.

Transurethral electrosurgery in the treatment of benign prostatic hyperplasia

2021 ◽  
pp. 13-21
Author(s):  
Yaroslav Valerievich Prokopiev ◽  
Vladimir Aleksandrovich Perchatkin ◽  
Aleksey Petrovich Andreev
Keyword(s):  
Benign Prostatic Hyperplasia ◽  
Cardiovascular System ◽  
Prostatic Hyperplasia ◽  
Scientific Article ◽  
Hemodynamic Parameters ◽  
Severe Stress ◽  
Adaptive Mechanisms ◽  
Examination Stress

The scientific article is devoted to the study of indicators of the cardiovascular system in students under examination stress. As a result of our research, we recorded that before the start of the exam and after its completion the students experienced severe stress, which negatively affected the results of the study of hemodynamic parameters that showed high values indicating an overstrain of the adaptive mechanisms.

Stochastic and chaotic dynamics evaluation parameters of cardiovascular system in human transshirotnyh transfer

2015 ◽  
Vol 4 (1) ◽  
pp. 102-110
Author(s):  
Пахомов ◽  
A. Pakhomov ◽  
Прасолова ◽  
A. Prasolova ◽  
Козлова ◽  
...  
Keyword(s):  
Cardiovascular System ◽  
Chaotic Dynamics ◽  
Vascular System ◽  
The Body ◽  
Regulatory Processes ◽  
Adaptive Mechanisms ◽  
Boarding House ◽  
Cardio Vascular ◽  
The City ◽  
Evaluation Parameters

Using the methods of statistical analysis and methods of multidimensional phase spaces (analysis and calculation of the volume of quasi-attractors matrices mezhattraktornyh distances) studied the behavior of the state vector of the body girls (for example, the behavior of the parameters of the cardiovascular system) with transshirotnyh movements. The differences in the assessment of the dynamic behavior of the parameters of the cardio-vascular system, namely the decrease in quasi-attractors indicates good revitalizing effect two-week stay in a boarding house young children oilman. Analysis matrices mezhattraktonyh distances showed that the motion of chaotic and stochastic centers at latitude movements somewhat different girls: mezhattraktornye distance when driving chaotic center upon arrival to rest down, after a two-week vacation, it becomes even more, to return to the city of Surgut is similar to the results for the arrival at rest, indicating the lack of formation of the girls adaptive mechanisms, as well as a significant tension of regulatory processes and the degree of mismatch of functional systems at transshirotnyh movements.

scholarly journals CHARACTERISTICS OF INDICATORS OF CENTRAL HEMODYNAMICS OF CADETS OF MARINE UNIVERSITY IN THE PERIOD OF LONG SWIMMING

2021 ◽  
Vol 7 (1) ◽  
pp. 54-59
Author(s):  
A. B. Gudkov ◽  
A. F. Shcherbina ◽  
O. N. Popova ◽  
A. N. Nikanov
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Cardiovascular System ◽  
Contractile Function ◽  
Statistical Processing ◽  
Central Hemodynamics ◽  
The Third ◽  
Adaptive Mechanisms ◽  
Myocardial Contractile ◽  
Spss Software

Goal. To reveal the peculiarities of central hemodynamics of cadets of a marine university in the conditions of a five-month sailing.Materials and methods. A survey of 70 cadets on board of a sailing training vessel was carried out in the dynamics of a five-month voyage (165 days). Hemodynamic indicators were monitored before entry on duty. For the statistical processing of the results, the SPSS software, v 17.0 (IBM) was used.Results and its discussion. The first two months are characterized by stable indicators of myocardial contractile function, which begins to change from the third month. In the third month, signs of mobilization of the circulatory function appear, which is expressed in an increase in blood pressure (p<0.05) and blood pressure (p<0,05) (by 6.6% and 14%, respectively).The fourth and fifth months are characterized by a further activation of the compensatory-adaptive mechanisms of hemodynamics: an increase in blood pressure (p<0,05), blood pressure (p<0,001), as well as MVC (p<0,05) due to an increase in heart rate (p<0,001), which indirectly indicates a decrease in efficiency in the work of the cardiovascular system.

scholarly journals The ocular cardiac reflex effect study on cardiac hemodynamic parameters in healthy young mans.

2019 ◽  
Vol 40 (1) ◽  
pp. 17-24
Author(s):  
A. I. Palamarchuk
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Blood Flow ◽  
Cardiovascular System ◽  
Peripheral Resistance ◽  
Blood Flow Rate ◽  
Effect Study ◽  
Nonlinear Dependence ◽  
System Response ◽  
Hemodynamic Parameters

Purpose of the study. Investigate changes of cardiac hemodynamic parameters caused by ocular cardiac reflex triggering in healthy men’s in youthful age.Material and methods. 120 healthy male volunteers in youthful age were examined. The mean age was (19,2 ± 0,93 years). For ocular-cardiac reflex (OCR) triggering we used a patented model «Device for dosed compression effects on the eyeballs» and «The method of ocular cardiac reflex triggering». On the basis of the obtained parameters of systolic (SBP) and diastolic (DBP) blood pressure, by arithmetic operations, pulse pressure (PP) and average flow pressure (AFP) and integrative parameters of cardiohemodynamics (CHD) – systolic blood volume (SBV), minute blood flow volume (MBFV), volumetric blood flow rate (V), total peripheral resistance (TPR) were determined. Results. Three main types of cardiovascular system response on OCR triggering were identified. The first type – hypertensive (n = 30 (25%) of the total number of examined subjects) was characterized by a significant (p < 0,05) increase in heart rate, SBP, DBP, PP, AFP and other integrative parameters of CHD. The second, hypotonic type of the response (62 subjects; 51,7%) was characterized by a significant (p < 0,05) decrease in SBP, DBP, PP, AFP. Patients with third, dystonic type, of response (n = 28 (23,3%) of the total number examined subjects) showed significant bilateral changes of blood pressure parameters in a nonlinear dependence of compression power on the eyeballs. Determination CHD parameters directly after and 3 and 5 minutes after decompression of the air in the compression device we enabled to determine the subtype of the mobility of the nervous centers as a feature that complements the basic type. The subtype of normal mobility was revealed in 63,3% (n = 19) of subjects with the main hypertensive type of response, 69,3% (n = 43) of subjects with the main hypotonic and 60,7 % (n = 17) with the main dystonic type of response of the cardiovascular system. The inert subtype in the mobility of the cardiovascular system were identified in 36,7% (n = 11) individuals with hypertension is the main type of response, at 30,7% (n = 19) of individuals with primary hypotonic type of response and 39,3 % (n = 11) – distancing. The obtained typological changes in blood pressure parameters caused by OCR triggering allowed to reveal predisposition to hypertension, hypotension, dystonia and to predict the development of hypertension in patients with hypertensive type of response usin appropriate primary prevention changes in life style. The highest risk of hypertension development may be in persons with hypertensive inert type of reaction of the system of regulation of blood pressure on OCR triggering. Further studies are being conducted to confirm this assumption. Keywords: oculo-cardiac reflex, blood pressure, heart rate, young age.

Analysis of Central Hemodynamic Parameters in Medical Students during the Pre-Examination Study Period

2021 ◽  
pp. 67-73
Author(s):  
VA Belyayeva
Keyword(s):  
Body Mass Index ◽  
Heart Rate ◽  
Medical Students ◽  
Cardiovascular System ◽  
Body Mass ◽  
Circulatory System ◽  
The Body ◽  
Hemodynamic Parameters ◽  
Adaptive Potential ◽  
Central Hemodynamic

Background: One of the main negative factors of the educational environment is the increased stress impact on the cardiovascular system of students preparing for examinations. The cumulative effect of a long-term, systematic exposure to stressors may be accompanied by impaired mental and somatic health of students. The extent of response to stress is individual; it is usually determined by cardiovascular health and a complex of psychophysiological characteristics of the body. Objective: To study the main parameters of central hemodynamics in medical students depending on the body mass index and adaptive potential in the pre-examination study period Materials and methods: In spring–summer 2019, 170 medical students (young men and women aged 20.4 ± 0.3 years) with different adaptive potential of the circulatory system were surveyed during a pre-exam study period to establish their anthropometric indicators, blood pressure and heart rate and to further estimate the body mass index and the main central hemodynamics parameters. Results: The average heart rate of students during the pre-exam study period was 85.4 ± 12.21 beats per minute. The level of metabolic and energy processes in the myocardium was characterized as moderate with a tendency to insufficient functional capacity of the cardiovascular system (CI = 90.4 ± 1.22). Significant differences were revealed in a number of parameters un-der study depending on gender, body mass index (F = 3.99; p = 0.00890) and the adaptive potential of the circulatory system (F = 23.08; p = 0.00000). Conclusions: In the pre-examination study period, both the heart rate and the Kerdo index among the students were elevated, which indicates the predominance of sympathetic autonomic stress. The students with tense adaptation mechanisms demonstrated higher values of certain hemodynamic parameters. The pulse pressure and the Robinson index were higher in overweight students compared to their peers with a normal body mass index. None of the students with class 1 obesity had a satisfactory level of adaptation of the circulatory system. The analysis of central hemodynamic parameters enables the assessment of tolerance of the cardiovascular system of students to the burden of learning.

scholarly journals The Physiological Assessment of Accompanying Changes in Hemodynamics in Persons with Visual Disorders at the Beginning of the Physical Therapy Program in Sanatorium

2021 ◽  
Vol 6 (2) ◽  
pp. 204-210
Author(s):  
Yu. L. Tonkopey ◽  
◽  
O. O. Skyba
Keyword(s):  
Physical Therapy ◽  
Cardiovascular System ◽  
Vision Loss ◽  
Complete Loss ◽  
Medical Documentation ◽  
Hemodynamic Parameters ◽  
Functional Changes ◽  
Loss Of Vision ◽  
Therapy Program ◽  
Physical Therapy Program

Today, an important issue is the problem of the prevalence of partial or complete loss of vision of the working population and its secondary pathology. The primary involvement of the cardiovascular system in the pathological process of this contingent is manifested by functional changes in hemodynamic parameters. The negative trend is exacerbated by forced hypokinesia and overweight visually impaired people. The purpose of the study was to analyze and assess the hemodynamic parameters of middle-aged people with visual pathology, to find out the possibility of expanding the choice of special means of physical therapy that increases the functional state of the cardiovascular system. Materials and methods. The study involved 54 people of middle age with disabilities and pathologies: retinal detachment, myopia with astigmatism, cataracts and glaucoma with a visual remainder of up to 10%, and persons with absolute vision loss. Copying of data from medical documentation and the subsequent analysis of the information received, examination, collection of anamnesis, instrumental methods of studying their hemodynamic parameters and methods of mathematical data processing were used. Results and discussion. In the course of complex medical examinations, grade I arterial hypertension, which was diagnosed by specialists, was found in 14.81% of people. According to the comparison of the actual blood pressure indicators with the clinical guidelines of the International Society of Hypertension (2020), 51.85% of the contingent showed "highly normal" values towards pathological changes. The tendency of a significant decrease also related to the indicators of systolic volume and minute volume of blood circulation. A low level of the body's tolerance to physical activity was established at 62.96% due to the examined patients with complete loss of vision. Conclusion. In the sanatorium-resort conditions, the program of physical therapy of the surveyed included standard means (physiotherapy exercises, massage, mechanotherapy, spatial orientation and psychocorrection). In the course of the study, to expand the existing components of the physical therapy program, the following ones were selected: hydrokinesis therapy, special corrective exercises with "fitball-aerobics" and dance therapy, health path, Scandinavian walking

scholarly journals Multimodal cardiovascular model for hemodynamic analysis: Simulation study on mitral valve disorders

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0247921
Author(s):  
Dibyendu Roy ◽  
Oishee Mazumder ◽  
Aniruddha Sinha ◽  
Sundeep Khandelwal
Keyword(s):  
Mitral Valve ◽  
Cardiovascular System ◽  
In Silico ◽  
Valvular Disease ◽  
Published Data ◽  
Hemodynamic Parameters ◽  
Cardiovascular Model ◽  
Cardiovascular Morbidity And Mortality ◽  
Valvular Heart Diseases ◽  
Holistic Understanding

Valvular heart diseases are a prevalent cause of cardiovascular morbidity and mortality worldwide, affecting a wide spectrum of the population. In-silico modeling of the cardiovascular system has recently gained recognition as a useful tool in cardiovascular research and clinical applications. Here, we present an in-silico cardiac computational model to analyze the effect and severity of valvular disease on general hemodynamic parameters. We propose a multimodal and multiscale cardiovascular model to simulate and understand the progression of valvular disease associated with the mitral valve. The developed model integrates cardiac electrophysiology with hemodynamic modeling, thus giving a broader and holistic understanding of the effect of disease progression on various parameters like ejection fraction, cardiac output, blood pressure, etc., to assess the severity of mitral valve disorders, naming Mitral Stenosis and Mitral Regurgitation. The model mimics an adult cardiovascular system, comprising a four-chambered heart with systemic, pulmonic circulation. The simulation of the model output comprises regulated pressure, volume, and flow for each heart chamber, valve dynamics, and Photoplethysmogram signal for normal physiological as well as pathological conditions due to mitral valve disorders. The generated physiological parameters are in agreement with published data. Additionally, we have related the simulated left atrium and ventricle dimensions, with the enlargement and hypertrophy in the cardiac chambers of patients with mitral valve disorders, using their Electrocardiogram available in Physionet PTBI dataset. The model also helps to create ‘what if’ scenarios and relevant analysis to study the effect in different hemodynamic parameters for stress or exercise like conditions.

Endocrine effects of examination stress

1988 ◽  
Vol 74 (3) ◽  
pp. 255-259 ◽  
Author(s):  
C. G. Semple ◽  
C. E. Gray ◽  
W. Borland ◽  
C. A. Espie ◽  
G. H. Beastall
Keyword(s):  
Psychological Stress ◽  
Thyroid Function ◽  
Early Morning ◽  
Prolactin Secretion ◽  
Endocrine Function ◽  
Testicular Function ◽  
Endocrine Effects ◽  
Examination Stress ◽  
Urine Cortisol ◽  
Final Degree

1. We have studied endocrine function in nine healthy young men 16 weeks before and immediately after Final degree examinations. Factors other than psychological stress which might have affected hormone levels were excluded. 2. The presence of psychological stress at the time of examinations was confirmed by finding increased values for two self-rating anxiety scales. 3. Urine metadrenaline excretion was increased in all subjects at the time of examination. Serum and early morning urine Cortisol as well as pituitary–testicular and pituitary–thyroid function and prolactin levels were unaffected by examination stress. 4. This study questions the popular belief that psychological stress stimulates prolactin secretion and suppresses pituitary–testicular function.

scholarly journals Psychological stress and associated factors among municipal solid waste collectors in Hanoi, Vietnam: A cross-sectional study

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254355
Author(s):  
Quynh Thuy Nguyen ◽  
Bang Van Nguyen ◽  
Ha Thi Thu Do ◽  
Bich Ngoc Nguyen ◽  
Van Thanh Nguyen ◽  
...  
Keyword(s):  
Psychological Stress ◽  
Night Shift ◽  
Work Conditions ◽  
Working Environment ◽  
Stress Factors ◽  
Waste Collection ◽  
Severe Stress ◽  
Cross Sectional ◽  
The Impact ◽  
Frequent Exposure

Introduction In low and middle-income countries, the manually operated municipal waste collection system prominently depended on the performance of waste collectors (WC). Most of the literature has focused on the impact of waste collection tasks on WCs’ physical health, while little was known about the psychological effects of work-related stress. This study aimed to examine the prevalence of psychological stress and related factors among waste collectors in Hanoi, Vietnam. Methods A cross-sectional survey was conducted among 802 WCs in 2017. The questionnaire included the 7-item Stress component of the 21-item Depression, Anxiety and Stress Scale, and questions on demographics and work conditions. Descriptive and multivariate logistics regression analyses were conducted to examine the factors related to psychological stress among WCs. Results Results showed that 13.4% of WCs reported stress symptoms; among them, 3.3% of WCs experienced severe stress. Factors related to lower odds of self-reported psychological stress included self-perceived frequent exposure to high and low temperatures in the working environment (OR = 0.51 and 0.52, respectively). Factors associated with the increased likelihood of symptoms included frequent exposure to hot/flammable objects (OR = 2.41), working a night shift in the last three months (OR = 1.82), education lever lower than high school (OR = 1.82), and having an insufficient monthly income (OR = 1.99). Conclusion The high percentage of workers with severe stress implies the need for mental health prevention and treatment for WCs who participated in this study.

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