scholarly journals Physiological Parameters in Various Prognosis of the Acute Period of Haemorrhagic Stroke

Doctor Ru ◽  
2021 ◽  
Vol 20 (9) ◽  
pp. 11-16
Author(s):  
I.S. Kurepina ◽  
◽  
R.A. Zorin ◽  
A.A. Kosolapov ◽  
◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Evoked Potentials ◽  
Haemorrhagic Stroke ◽  
Favourable Outcome ◽  
Physiological Parameters ◽  
Lethal Outcome ◽  
Acute Period ◽  
Cognitive Evoked Potentials ◽  
Outcome Group

Study Objective: To identify the differences in physiological parameters in groups of patients in an acute period of haemorrhagic parenchymatous stroke (supratentorial hemisphere hematomas) with favourable outcome and fatality. Study Design: prospective study. Materials and Methods. We have examined 96 patients with supratentorial haemorrhagic stroke. Haemorrhagic stroke was diagnosed on the basis of neuroimaging results, clinical symptoms and medical history, as well as clinical and laboratory data. A cluster analysis and expert examinations made it possible to divide patients into two groups: 49 patients who died of the acute haemorrhagic stroke and 47 patients with a favourable outcome. We evaluated the level of consciousness, cognitive functions, neurophysiological parameters: electroencephalography (EEG), cognitive evoked potentials Р300, heart rate variability (HRV). Study Results. In patients with a favourable outcome, an overall amplitude of the EEG spectrum was higher vs. patients with lethal outcome (statistically significant results were noted in all leads). A significant increase in the mean frequency of theta waves was seen in both groups, especially in the group with lethal outcomes. When Р300 in patients with lethal outcome was evaluated, a significantly lower P2N2 amplitude in Fz was noted vs favourable outcome group: 5.1 (2.6; 9.1) μV vs 8.9 (5.6; 20.4) μV (U = 148; p = 0.021). A comparative analysis of HRV revealed significant differences only in heart rate (mean R-R): it was lower in patients who died in the acute period of haemorrhagic stroke: 696 (608; 836) ms vs 806 (743; 911) ms (U = 181; p = 0.033). In patients with lethal outcomes, there is an increase in the number of linear correlations in physiological parameters vs. favourable outcome group. Conclusion. Deaths from acute haemorrhagic stroke are preceded by reduction in the basic cortical rhythm, growth in slow waves activity, reduction in the stimuli recognition mechanism activation (according to cognitive evoked potentials Р300). An analysis of the rate of correlation in physiological mechanisms of brain activity regulation (EEG), neurophysiological correlates in stimuli recognition and decisionmaking (Р300), as well as autonomic regulation mechanisms (HRV) shows limited functional reserves in patients with lethal outcomes. Keywords: haemorrhagic stroke, event-associated potential, heart rate variability, correlation analysis.

scholarly journals Ethological and Physiological Parameters Assessment in Donkeys Used in Animal Assisted Interventions

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1867
Author(s):  
Michele Panzera ◽  
Daniela Alberghina ◽  
Alessandra Statelli
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Root Mean Square ◽  
Physiological Parameters ◽  
Mean Square ◽  
Objective Indicators ◽  
Selection Of

Background: Few studies have been performed to identify objective indicators for the selection of therapeutic donkeys or to assess their welfare during animal-assisted interventions (AAIs) Objective: This study aimed to evaluate the response to the ethological test and the modifications of physiological parameters in donkeys subjected to AAI sessions. Methods: Thirteen donkeys were subjected to a behavioral evaluation during an AAI session. Heart rate, heart rate variability, and root mean square of successive difference values were detected. Results: Statistically significant changes in the tested parameters were observed during AAI sessions. Conclusions: In donkeys, there was a neurovegetative involvement during AAI sessions. Our data give a contribution to the evaluation of donkey welfare during AAIs.

scholarly journals Cognitive Behavior Evaluation Based on Physiological Parameters among Young Healthy Subjects with Yoga as Intervention

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
H. Nagendra ◽  
Vinod Kumar ◽  
S. Mukherjee
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Neural Activity ◽  
Cognitive Functions ◽  
Physiological Parameters ◽  
Yoga Practice ◽  
Autonomic Nervous ◽  
Yoga Group

Objective. To investigate the effect of yoga practice on cognitive skills, autonomic nervous system, and heart rate variability by analyzing physiological parameters.Methods. The study was conducted on 30 normal young healthy engineering students. They were randomly selected into two groups: yoga group and control group. The yoga group practiced yoga one and half hour per day for six days in a week, for a period of five months.Results. The yoga practising group showed increasedα,β, andδEEG band powers and significant reduction inθandγband powers. The increasedαandβpower can represent enhanced cognitive functions such as memory and concentration, and that ofδsignifies synchronization of brain activity. The heart rate indexθ/αdecreased, neural activityβ/θincreased, attention resource indexβ/(α+θ)increased, executive load index(δ+θ)/αdecreased, and the ratio(δ+θ)/(α+β)decreased. The yoga practice group showed improvement in heart rate variability, increased SDNN/RMSSD, and reduction in LF/HF ratio.Conclusion. Yoga practising group showed significant improvement in various cognitive functions, such as performance enhancement, neural activity, attention, and executive function. It also resulted in increase in the heart rate variability, parasympathetic nervous system activity, and balanced autonomic nervous system reactivity.

scholarly journals Peculiarities of the heart rate variability at patients with acute disorder of cerebral circulation depending on localisation of ischemic damage

2019 ◽  
Vol 10 (3) ◽  
pp. 63-69
Author(s):  
Valentin I. Nikolaev ◽  
Nataliya P. Denisenko ◽  
Anastasiya V. Brega ◽  
Marya D. Denisenko
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Cerebral Circulation ◽  
Blood Circulation ◽  
The Body ◽  
Ischemic Damage ◽  
Acute Period ◽  
Regulatory Systems ◽  
Dynamic Type ◽  
Brain Artery

Features of the heart rate variability at patients with acute disorder of cerebral circulation depending on localisation of ischemic damage and type of hemodynamics were studied in acute period of disease and in a condition of relative functional rest. Surveyed men and women (30–55 years old) were divided into 3 groups: patients with ischemic damage to the area of the left average brain artery, right average brain artery and with ischemia in vertebro-basilar department. According to indicators of the integral rheography of the body which was carried out in the acute period of a disease, patients of each group were divided into subgroups depending on hemodynamics type – with hyper dynamic, hypo dynamic and normo dynamic type of blood circulation. It was revealed that the highest activity of sympathetic link of regulation and also higher values of the index of tension and the index of vegetative balance characterized patients with ischemia in the area of right average brain artery and hyper dynamic type of blood circulation. The indicator of activity of regulatory systems characterized “overstrain of regulatory mechanisms” and also “exhaustion of mechanisms of regulation” at patients of this group in the acute period. However upon repeated examination 7 days later revealed the significant reduction of the values of the indicator of activity of regulatory systems. Similar indicators of the heart rate variability were found at patients with ischemic damage in the area of right average brain artery and normo dynamic type of blood circulation. Thus, it was detected that the greatest disorders of regulation of the cardiovascular system were characteristic of patients with ischemia in the area of right average brain artery both hyper dynamic and normo dynamic blood circulation types. Activation of parasympathetic and suppression of sympathetic link of regulation were noted in all patients on the seventh day of hospital stay regardless of localisation of ischemic damage and type of hemodynamics.

scholarly journals Effect of Virtual Reality on Stress Reduction and Change of Physiological Parameters Including Heart Rate Variability in People With High Stress: An Open Randomized Crossover Trial

2021 ◽  
Vol 12 ◽  
Author(s):  
Hyewon Kim ◽  
Dong Jun Kim ◽  
Seonwoo Kim ◽  
Won Ho Chung ◽  
Kyung-Ah Park ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Virtual Reality ◽  
Rating Scale ◽  
High Stress ◽  
Mental Healthcare ◽  
Numeric Rating Scale ◽  
Physiological Parameters ◽  
Relaxation Phase ◽  
Significant Difference

Introduction: Although, attempts to apply virtual reality (VR) in mental healthcare are rapidly increasing, it is still unclear whether VR relaxation can reduce stress more than conventional biofeedback.Methods: Participants consisted of 83 healthy adult volunteers with high stress, which was defined as a score of 20 or more on the Perceived Stress Scale-10 (PSS-10). This study used an open, randomized, crossover design with baseline, stress, and relaxation phases. During the stress phase, participants experienced an intentionally generated shaking VR and serial-7 subtraction. For the relaxation phase, participants underwent a randomly assigned relaxation session on day 1 among VR relaxation and biofeedack, and the other type of relaxation session was applied on day 2. We compared the State-Trait Anxiety Inventory-X1 (STAI-X1), STAI-X2, the Numeric Rating Scale (NRS), and physiological parameters including heart rate variability (HRV) indexes in the stress and relaxation phases.Results: A total of 74 participants were included in the analyses. The median age of participants was 39 years, STAI-X1 was 47.27 (SD = 9.92), and NRS was 55.51 (SD = 24.48) at baseline. VR and biofeedback significantly decreased STAI-X1 and NRS from the stress phase to the relaxation phase, while the difference of effect between VR and biofeedback was not significant. However, there was a significant difference in electromyography, LF/HF ratio, LF total, and NN50 between VR relaxation and biofeedback.Conclusion: VR relaxation was effective in reducing subjectively reported stress in individuals with high stress.

scholarly journals Meditation Practice Improves Short-Term Changes in Heart Rate Variability

2020 ◽  
Vol 17 (6) ◽  
pp. 2128 ◽  
Author(s):  
Kang-Ming Chang ◽  
Miao-Tien Wu Chueh ◽  
Yi-Jung Lai
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Physiological Parameters ◽  
The Other ◽  
Meditation Practice ◽  
Short Term ◽  
Face To Face ◽  
Before And After ◽  
The Difference

Background: It is well known that meditation improves the physical and psychological condition of its practitioners. This study investigated the heart rate variability response of meditation practitioners in two Chan master teaching environments, namely face-to-face and video classes. Methods: Experimental sessions were conducted, one featuring face-to-face classes and the other featuring video classes. The difference in participants’ physiological parameters (blood pressure and heart rate variability) between the two experimental sessions was determined. In the first session, physiological parameters were recorded twice, before and after one teaching course, and the second session took place one month after the first. The first and second sessions had 45 and 27 participants, respectively. Those involved in the first experiment had no experience with meditation, whereas participants in the second experiment had practiced meditation for an average of 9 years (range = 1 to 27 years). Both experiments were conducted once a week, with each session lasting 1.5 h. Results: For both experiments, both heart rate and heart rate variability by age significantly decreased after one teaching course. Conclusions: Chan meditation practitioners benefit from receiving both face-to-face and video class teaching from a Chan master.

Heart rate variability (HRV) of patients with traumatic brain injury (TBI) during the post-insult sub-acute period

Brain Injury ◽  
2005 ◽  
Vol 19 (8) ◽  
pp. 605-611 ◽  
Author(s):  
O Keren ◽  
S Yupatov ◽  
M. M Radai ◽  
R Elad-Yarum ◽  
D Faraggi ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Brain Injury ◽  
Acute Period

The influence of physiological parameters on long term heart rate variability in healthy preterm infants

1990 ◽  
Vol 18 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Conny M. A. van Ravenswaaij-Arts ◽  
Jeroen C. W. Hopman ◽  
Louis A. A. Kollée ◽  
Gerard B. A. Stoelinga
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Preterm Infants ◽  
Physiological Parameters

Heart rate variability in children with acute rheumatic fever

2011 ◽  
Vol 22 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Mehmet Karacan ◽  
Naci Ceviz ◽  
Haşim Olgun
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Rheumatic Fever ◽  
Frequency Domain ◽  
Acute Rheumatic Fever ◽  
Control Group ◽  
P Value ◽  
Acute Period ◽  
Systemic Inflammatory Disease ◽  
Pr Interval

AbstractObjectiveAcute rheumatic fever is a systemic inflammatory disease occurring after acute streptococcal tonsillopharyngitis. The PR prolongation in these patients is thought to be due to increased vagal activity. There has been no previous study investigating the autonomic balance in patients with acute rheumatic fever. In this study, we aimed to investigate the balance of the autonomic nervous system in children with acute rheumatic fever by analysis of heart rate variability.MethodsWe evaluated the heart rate variability parameters in 50 patients with acute rheumatic fever and 37 comparable control subjects. Both groups underwent 24-hour electrocardiography monitoring, and time- and frequency-domain heart rate variability parameters were calculated. A total of 39 patients (78%), with (n = 28) or without (n = 11) other major findings, had carditis, and the remaining 11 (22%) did not. The PR interval was found to be prolonged in 10 (20%) of the patients at the beginning.ResultsIn the study group, the time- and frequency-domain heart rate variability parameters showed a sympathetic dominance compared with the control group, with a p-value less than 0.05. When compared with the control group, the time- and frequency-domain heart rate variability parameters showed a significant sympathetic dominance in patients with both prolonged PR and normal PR intervals in the acute period, with a p-value less than 0.05. When compared with patients with normal PR interval, mean normalised low frequency and normalised high frequency parameters suggested a relatively lower sympathetic dominance in patients with prolonged PR interval, with a p-value less than 0.05.ConclusionOur results indicated that in the acute period of rheumatic fever, sympathetic dominance is apparent; in patients with prolonged PR interval, sympathetic dominance is relatively lower when compared with the patients with normal PR interval.

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