scholarly journals Features of heart rate variability in patients with takotsubo syndrome

2021 ◽  
Vol 10 (Supplement_1) ◽  
Author(s):  
D Evdokimov ◽  
SA Boldueva ◽  
VS Feoktistova ◽  
TA Baeva
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sinus Rhythm ◽  
Autonomic Regulation ◽  
Deep Breathing ◽  
Takotsubo Syndrome ◽  
Orthostatic Test ◽  
Rate Regulation ◽  
Heart Rate Regulation ◽  
Deep Breathing Test

Abstract Funding Acknowledgements Type of funding sources: None. Main funding source(s): North-Western State Medical University named after I.I. Mechnikov Objective to study the features of autonomic regulation of sinus rhythm features of autonomic regulation of cardiac sinus rhythm in patients with Takotsubo syndrome (TTS) during inpatient stay in hospital. Materials and methods. The study included 25 female patients (the median age 57.5 ± 28.5 years) with TTS, diagnosis was based on the InterTAK criteria. On the 5-7th day after admission, the heart rate variability (HRV) was assessed both at rest and cardiac autonomic function tests: the deep breathing test (DBT) and active orthostatic test (AOT) with the usage of a computer diagnostic system «Valenta». RESULTS According to HRV data, initially at rest, the majority of the studied patients predominantly had a parasympathetic impact on the heart rate regulation: in 70% - increased parasympathetic influence, in 17% - increased sympathetic influence, in 13% - a balanced heart rate regulation. When performing a DBT, the predominance of the parasympathetic influence on the heart rate was noted both in spectral parameters and according to the data of time analysis (HF  during DBT  increased 1.8 times  up to  489.6 ± 114.2 ms2 (p <0.05) ; LF  decreased 1.7 times  up to 254.1 ± 70.3 ms2 (p <0.05); VLF  increased 2.8 times up to 402.3 ± 101.8 ms2 (p <0, 05); TP  increased 1.4 times up to 1145.9 ± 251.3 ms2; CV increased 1.3 times up to 6.5 ± 0.7% (p <0.05); SDNN increased 1.3 times up to - 58.7 ± 6.6 ms (p <0.05). HRV measured during an AOT  showed a paradoxical  evaluation  in the parasympathetic impact on the heart rate (HF increased by 1.8 times and reached - 488.0 ± 104.7 ms2 (p <0.05); LF decreased by 1.1 times up to  408 , 4 ± 103.6 ms2; VLF increased 1.2 times  up to  166.4 ± 52.2 ms2; TP increased 1.3 times  up to 1062.8 ± 181.1 ms2 (p <0.05); CV increased 1.6 times  up to 8.0 ± 0.9% (p <0.05); SDNN increased 1.4 times  up to 62.6 ± 7.5 ms (p <0.05)). Conclusions During the index hospital inpatient stays the majority of patients with TTS have a vegetative imbalance due to increased parasympathetic influence on the heart rate, both at rest and  during a deep breathing test and an active orthostatic test. This fact is quite unexpected and requires further study.

scholarly journals АНАЛІЗ ВАРІАБЕЛЬНОСТІ СЕРЦЕВОГО РИТМУ СПОРТСМЕНІВ ВИСОКОЇ КВАЛІФІКАЦІЇ В УМОВАХ НЕСТАЦІОНАРНИХ ПРОЦЕСІВ

2016 ◽  
Author(s):  
G. V. Korobeynikov ◽  
L. G. Korobeynikova ◽  
V. S. Mischenko
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Elite Athletes ◽  
Autonomic Regulation ◽  
Stationary Processes ◽  
Rate Regulation ◽  
Heart Rate Regulation

The heart rate variability during non stationary processes in athletes was studied. The 29 elite athletes were examined. The parameters of scattergram for analysis of non stationnary processes of heart rate regulation were used. The results are shows about of tendency for decrease of periodic and non periodic variations of cardiac intervals depending from characters of reaction of heart rate. The obtained result showed the aging increasing of tension of autonomic regulation of heart rate of athletes as fatigue or non adequate performance.

scholarly journals Comparative Characteristics of Sensorimotor Reactions of Highly Qualified Athletes with Different Types of Heart Rate Regulation

2021 ◽  
Vol 6 (5) ◽  
pp. 456-464
Author(s):  
A. P. Romanchuk ◽  
◽  
O. V. Guzii ◽  
A. V. Maglyovanyi ◽  
◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Type I ◽  
Sensorimotor Function ◽  
Type Ii ◽  
Highly Qualified ◽  
Rate Regulation ◽  
Type Iv ◽  
Heart Rate Regulation ◽  
Different Types

The purpose of the study was a comparative analysis of sensorimotor reactions in highly trained athletes with different types of heart rate regulation. Materials and methods. 202 highly trained male athletes aged 22.6±2.8 years, who are engaged in acyclic sports – martial arts (karate, taekwondo, kickboxing, boxing, freestyle wrestling, Greco-Roman wrestling, judo, sambo) and games (water polo, soccer) were examined. The experience in sports was 10.3±3.1 years. All studies were conducted in the pre-competition period in the morning. Based on the study of heart rate variability in athletes, the type of heart rate regulation was determined. The basis for determining the types of regulation is the classification of heart rate variability indicators, taking into account their inclusion in certain limits. Heart rate variability indicators that reflect the dual-circuit model of heart rate regulation and are used for diagnosis include: total heart rate variability – total power (ms2), very low frequency (ms2), and stress-index (e.u.), which reflect the various chains of regulatory effects on heart rate. According to certain data types, 4 groups were formed. 1 group (type I) consisted of 42 athletes, 2 (type II) – 28 athletes, 3 (type III) – 88 athletes, 4 (type IV) – 44 athletes. The study of sensorimotor function was performed using the device KMM-3. Results and discussion. It is shown that the most balanced sensorimotor reactions are in athletes with type III regulation of heart rate. The most strain sensorimotor reactions are observed in type II regulation of heart rate, which is reflected in the pronounced central asymmetry of movement control with acceleration to the left against the background of deteriorating accuracy of right (due to flexors) and left (due to extensors) limbs, and the right-hand predominance. Sensorimotor reactions are quite strain in type IV of heart rate regulation, which is characterized by slow reactions at the synaptic and peripheral levels. In type I of heart rate regulation, the disorders observed at the central level of regulation relate to the asymmetry of short-term motor memory processes, which are significantly reduced in the left hemisphere. Conclusion. The study shows that the differences in the regulatory support of heart rate in highly qualified athletes are accompanied by characteristic differences in sensorimotor function. The latter can be useful for the diagnosis and further correction of conditions associated with the development of overexertion and overtraining

scholarly journals The effect of deep breathing test on heart rate variability in obese and non-obese patients with myocardial infarction

Biomedicine ◽  
2021 ◽  
Vol 41 (1) ◽  
pp. 93-98
Author(s):  
Srinath C. Galag ◽  
R Rajalakshmi ◽  
Nagaraj Desai ◽  
H Basavanagowdappa
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Obese Group ◽  
Total Power ◽  
P Value ◽  
Obese Patients ◽  
Deep Breathing ◽  
Deep Breathing Test

Introduction and Aim:Obesity and metabolic syndrome increases the risk of cardiovascular diseases (CVD).The acute myocardial infarction may be associated with autonomic dysfunction and it may have a bearing on the prognosis. The objective of the study wasto examine the effect of deep breathing test on heart rate variability in obese and non-obese patients with myocardial infarction (MI).   Materials and Methods:The patients with acute myocardial infarction were confirmed by universal definition and treatment was administered. At 12 weeks of follow up, the MI patients were screened and divided into two groups. 30 patients of MI with BMI 25 to 30 kg/m2 formed the obese group.30 patients of MI with BMI 18.5 to 24.9 kg/m2 formed the non-obese group. The baseline ECG was taken for 5 minutes by using Niviqure B3 machine for HRV analysis. Then, deep breathing test (DBT) was performed in a standardized manner.   Results:The two groupswere well matched for the age (53.7±11.5 vs.55.2±9.2years).In the baseline there was a statistically significant decrease in the total power (TP) of the heart i.e., HF plus LF (2178±762ms2 vs2991±771ms2 with a ‘p’ value 0.001) in the obese group when compared to non-obese group. On DBT there was a significant decrease in heart rate (81bpm to 65bpm) in non-obese group. However, in obese group there was no significant decrease in heart rate (79bpm to 72bpm) on DBT.   Conclusion: Accordingly, we concludethat in obese patients with MI there is a reduction in respiratory vagal modulation of heart rate during DBT.  

scholarly journals Heart Rate Variability Indices as Possible Biomarkers for the Severity of Post-traumatic Stress Disorder Following Pregnancy Loss

2022 ◽  
Vol 12 ◽  
Author(s):  
Cláudia de Faria Cardoso ◽  
Natalia Tiemi Ohe ◽  
Yazan Bader ◽  
Nariman Afify ◽  
Zahrah Al-Homedi ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Pregnancy Loss ◽  
Stress Disorder ◽  
Self Report ◽  
Deep Breathing ◽  
Post Traumatic Stress ◽  
Time Data ◽  
Normal Sinus ◽  
Deep Breathing Test

Background: Psychological distress, such as posttraumatic stress disorder (PTSD), is commonly evaluated using subjective questionnaires, a method prone to self-report bias. The study's working hypothesis was that levels of autonomic dysfunction determined by heart rate variability (HRV) measures are associated with the severity of PTSD in women following pregnancy loss.Methods: This was an observational prospective cohort study with 53 patients enrolled. The DSM-5 (Diagnostic and Statistical Manual of Mental Disorders) PTSD scale (PCL-5) was used to assess the severity of PTSD in women after pregnancy loss. The cardiac autonomic function was assessed using HRV measurements during a deep breathing test using an HRV scanner system with wireless ECG enabling real-time data analysis and visualization. HRV measures were: standard deviation (SD) of normal R-R wave intervals [SDNN, ms], square root of the mean of the sum of the squares of differences between adjacent normal R wave intervals [RMSSD, ms], and the number of all R-R intervals in which the change in consecutive normal sinus intervals exceeds 50 milliseconds divided by the total number of R-R intervals measured [pNN50 = (NN50/n-1)*100%] [pNN50%].Results: The PCL-5 scores had a statistically significant association with HRV indices (SDNN; RMSSD, and pNN50%). Patients with PTSD had similar mean heart rate values as compared to patients without PTSD (PCL-5), but significantly higher SDNN [median[IQR, interquartile range]: 90.1 (69.1–112.1) vs. 52.5 (36.8–65.6)], RMSSD [59.4 (37.5–74.9) vs. 31.9 (19.3 – 44.0)], and PNN50% values [25.7 (16.4–37.7) vs. 10.6 (1.5–21.9)]. The SDNN of the deep breathing test HRV was effective at distinguishing between patients with PTSD and those without, with an AUC = 0.83 +/− 0.06 (95 % CI 0.94, p = 0.0001) of the ROC model.Conclusions: In this study, HRV indices as biomarkers of cardiac dysautonomia were found to be significantly related to the severity of PTSD symptoms in women after pregnancy loss.

scholarly journals ANALYSIS AND FORECASTING OF RESERVE CAPABILITIES OF THE ORGANISM OF STUDENTS ACCORDING TO INDICES OF HEART RATE VARIABILITY

2019 ◽  
Vol 96 (6) ◽  
pp. 556-561 ◽  
Author(s):  
Irina G. Kretova ◽  
O. A. Vedyasova ◽  
M. V. Komarova ◽  
O. I. Shiryaeva
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Cardiovascular System ◽  
Heart Rate Recovery ◽  
Stress Test ◽  
Autonomic Regulation ◽  
Cardiac Response ◽  
Operating Characteristics ◽  
Spectral Parameters ◽  
Heart Rate Regulation

Introduction. Currently, there is a deterioration trend in the health of the younger generation, in particular, an increasing number of persons with functional disorders of the cardiovascular system. Regarding this it is important to develop an comprehensive approach to the study of the circulatory indices in the young age with informative clinical diagnostic techniques and new ways to analyze the data. Material and methods. Heart rate variability (HRV) indices in 200 students at rest and during exercise were studied. For a more complete assessment of the functional reserves of cardiovascular system after the load the index of the normal heart rhythm restoration (SDNN) was calculated. Moreover, we built logistic models and curves of the operating characteristics. Results. At rest, no significant differences in indices of both HRV and autonomic regulation of heart rate have been identified between boys and girls aged of 16-18 years. Students of the different gender, aged of 19-22 years showed significant differences in spectral parameters of HRV, there was noted the dominance of the sympathetic component of heart rate regulation in boys and parasympathetic - in girls. In terms of physical activity in undergraduate students there is observed mainly the activation of vagal influences on the heart, in senior students the vegetative balance shifted to the direction of the increased activity of mechanisms of the sympathetic regulation. The revealed decrease of NHRR reflects the low level of the reserve capacity of the cardiovascular system in 41% out of observed students. Part of students with an increased probability of the reduction of functional cardiac disorders accounted for 42% of boys and 39% of girls among students aged 16-18 years and 36% of boys and 44% of girls among students aged of 19-22 years. Conclusion. There is a change in the nature of autonomous regulation of heart rate in students of different gender and ages from 16-18 to 19-22 years. The optimal cardiac response to stress test is observed at low baseline values of heart rate and the prevalence of the parasympathetic part of the autonomic regulation of the heart rate at rest. To assess the functional reserve of the cardiovascular system in HRV indices we recommend the calculation of NHRR and the analysis of the SDNN coefficient for the effective prediction of heart rate recovery rate after exercise testing.

Autonomic regulation in the major depression during SSRI antideperssant treatment

2011 ◽  
Vol 26 (S2) ◽  
pp. 600-600
Author(s):  
O. Antipova
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Major Depression ◽  
Rating Scale ◽  
Evaluation Criteria ◽  
Autonomic Regulation ◽  
Control Group ◽  
Functional Evaluation ◽  
Autonomic Reactivity ◽  
Orthostatic Test

IntroductionImportance of current research is determined by the need to find the clinical and functional evaluation criteria for the systemic patterns of changes in physiological reactivity of the patient at various stages depression treatment.ObjectiveOptimization of diagnostics and planning of treatment of patients with depression based on analysis psychopathological state and autonomic reactivity during active treatment using SSRI antidepressants.AimsSystem analyze of clinical-psychopathological characteristics and autonomic reactivity of major depression. Main group included 62 patients with the diagnosis of depressive episode. Control group: 64 healthy persons.MethodsClinico- psychopathological, clinico- anamnestic, Hamilton Depression Rating Scale (HDRS-17), the analysis of heart rate variability for investigation of autonomic regulation.Results of the depressive patients autonomic regulation study show the reduction of total heart rate variability is observed at rest and in orthostatic test. The balance of sympathetic, parasympathetic and suprasegmental parts of autonomic nervous system was preserved at rest in depression. However after orthostatic test the activity of sympathetic baroreflex mechanisms is decreased and the hyperactivation of suprasegmental ergotropic systems is revealed. During the 4–6-weeks treatment the positive dynamics of psychopathological characteristics is observed but the changes of autonomic reactivity are not revealed. After 6-months therapy only 30, 6% of patients demonstrate signs of normalisation of autonomic regulation.ConclusionsObtained data, apparently, attest to the fact that the emotional and autonomic symptoms are restored with different speed. The results of study should be used in the planning of treatment in the psychiatric practice and in the primary medical care.

scholarly journals INDICATORS OF HEART RATE VARIABILITY IN CHILDREN FROM SURGUT

2019 ◽  
Vol 19 (2) ◽  
pp. 14-19
Author(s):  
O Litovchenko ◽  
E Saitova
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Comparative Analysis ◽  
Time Domain ◽  
First Graders ◽  
Educational Institutions ◽  
Similar Data ◽  
Rate Regulation ◽  
Heart Rate Regulation

Aim. The article deals with establishing the features of the cardiovascular system by using HRV indicators in first graders from Surgut. Materials and methods. We examined 252 first-graders from various educational institutions in Surgut. The features of autonomic heart rate regulation were studied by using time-domain and spectral analysis. We also conducted a comparative analysis of indicators depending on gender. Results. We did not reveal any significant differences in heart rate variability parameters of boys and girls from Surgut. These data were compared with the similar data of first-graders from Moscow obtained in 2016. Conclusion. First-graders from Surgut had a balance of sympathetic and parasympathetic influence in heart rate regulation.

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