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Journal articles on the topic 'Cardiac rhythm variability'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Wright, Shannon E., and Caroline Palmer. "Auditory rhythm complexity affects cardiac dynamics in perception and synchronization." PLOS ONE 18, no. 11 (2023): e0293882. http://dx.doi.org/10.1371/journal.pone.0293882.

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Accurate perception and production of auditory rhythms are key for human behaviors such as speech and music. Auditory rhythms in music range in their complexity: complex rhythms (based on non-integer ratios between successive tone durations) are more difficult to perceive and produce than simple rhythms (based on integer ratios). The physiological activity supporting this behavioral difference is not well understood. In a within-subjects design, we addressed how rhythm complexity affects cardiac dynamics during auditory perception and production. Musically trained adults listened to and synchr

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Chuyan, E. N., I. R. Nikiforov, Elena Aleksandrovna Biryukova, I. S. Mironyuk, and M. Yu Ravaeva. "Ultrahigh frequency electromagnetic radiation modulates cardiac rhythm variability in volunteers." Russian Journal of Physiotherapy, Balneology and Rehabilitation 15, no. 6 (2016): 297–301. http://dx.doi.org/10.18821/1681-3456-2016-15-6-297-301.

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The objective of the present work was to study variability of cardiac rhythms developing under the influence of the 10 day-long course of low-intensity ultrahigh frequency electromagnetic radiation (UHF EMR). It was shown that the courses of UIHF EMR have corrective effect on the cardiovascular system of the volunteers, in the first place by means of reducing the level of centralization of the regulatory mechanisms. The intensity of the influence of this therapy on the cardiac rhythm variability depends on the number of treatment courses and the initial functional state of the volunteers. More

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Oleinikov, V. E., and N. V. Pozdnyakova. "Prognostic importance of late potentials of ventricles and variability of cardiac rhythm in patients with ischemic cardiac disease." Kazan medical journal 79, no. 1 (1998): 19–22. http://dx.doi.org/10.17816/kazmj63427.

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The combined analysis of cardiac rhythm variability indices, signal-averaged electrocardiogram noting late potentials of ventricles is performed. As many as 158 patients with various forms of ischemic cardiac disease and 70 persons of the control group are examined. Signal-averaged electrocardiograms are registered in dynamics during 18 months, cardiac rhythm variability indices are determined, echocardiography is performed.

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Kalyurand, M., E. Loginova та Y. Potekhina. "Dynamics of the Functional State of the Body in Children Presenting Psychic Retardation Under the Inﬂuence of Osteopathic Correction (According to the Spectral Index of the Heart Rate Variability)". Russian Osteopathic Journal, № 3-4 (30 грудня 2016): 69–76. http://dx.doi.org/10.32885/2220-0975-2016-3-4-69-76.

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Introduction. Psychic retardation and its correction in children is an important problem in children’s psychoneurology. It is necessary to extend the variety of treatment methods, also by means of osteopathy. The analysis of the cardiac rhythm vaiability gives information about the functional state of the body and permits to follow its dynamics.Research objectives. Evoluate the inﬂuence of osteopathic treatment on the functional state of children presenting psychic retardation (according to the data of the spectral analysis of the cardiac rhythm variability). Research methods. An osteopathic e

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Kuznetsov, Sergey V., and Nalalia N. Kuznetsova. "Effects of high doses of ouabain on cardiac, respiratory, and motor activity at newborn rats." Reviews on Clinical Pharmacology and Drug Therapy 19, no. 4 (2021): 395–403. http://dx.doi.org/10.17816/rcf194395-403.

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BACKGROUND: In the early postnatal period, the activation of cholinergic regulation was shown to reveal that lead to development of atypical cardiac rhythm in form of alteration of normal and weak bradycardic rhythm and periods of significant bradycardia. AIM: To study the change in the rhythmic activity of cardiac, respiratory and somatomotor systems after Na+/K+-ATPase blockade by ouabain in rats of 3 and 16 days old MATERIALS AND METHODS: In 3- (P3) and 16-day-old (P16) rats the change in the rhythmic activity of cardiac, respiratory and somatomotor systems after Na+/K+-ATPase b

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Vornovskaya, O. V., N. B. Haspekova, G. R. Tabejeva, V. Yu Oknin, and A. M. Vein. "Variability dynamic analysis of cardiac rhythm at migraine." Neurology Bulletin XXXII, no. 1-2 (2000): 29–31. http://dx.doi.org/10.17816/nb77691.

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А spectral analysis of cardiac rhythm variability has taken place among patients with migraine. The purpose of that analysis was to determine the role of cerebral and peripheric regulation changes in the paroxysm pathogenesis at different phases of migrain attack: before it, during it and after it. It was established, that in pre-attack period activation of ergotropic mechanisms takes place with further generalized sympathico-parasympathic activation at the moment of migraine attack. Post-attack period is characterized by activity normalization or segmentary sympathic vasomotor and vagal mecha

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Cairo, Beatrice, Riccardo Pernice, Nikola N. Radovanović, Luca Faes, Alberto Porta, and Mirjana M. Platiša. "State Space Correspondence and Cross-Entropy Methods in the Assessment of Bidirectional Cardiorespiratory Coupling in Heart Failure." Entropy 27, no. 7 (2025): 770. https://doi.org/10.3390/e27070770.

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The complex interplay between the cardiac and the respiratory systems, termed cardiorespiratory coupling (CRC), is a bidirectional phenomenon that can be affected by pathologies such as heart failure (HF). In the present work, the potential changes in strength of directional CRC were assessed in HF patients classified according to their cardiac rhythm via two measures of coupling based on k-nearest neighbor (KNN) estimation approaches, cross-entropy (CrossEn) and state space correspondence (SSC), applied on the heart period (HP) and respiratory (RESP) variability series, while also accounting

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Yilmaz, Osman, Murat Ciftel, Kezban Ozturk, et al. "Assessment of heart rate variability in breath holding children by 24 hour Holter monitoring." Cardiology in the Young 25, no. 2 (2013): 317–23. http://dx.doi.org/10.1017/s1047951113002333.

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AbstractPurpose: Previous studies have shown that the underlying pathophysiologic mechanism in children with breath holding may be generalised autonomic dysregulation. Thus, we performed cardiac rhythm and heart rate variability analyses using 24-hour Holter monitoring to evaluate the cardiac effects of autonomic dysregulation in children with breath-holding spells. Methods: We performed cardiac rhythm and heart rate analyses using 24-hour Holter monitors to evaluate the cardiac effects of autonomic dysregulation in children during a breath-holding spell. Our study group consisted of 68 childr

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Korpan, A. S., G. V. Nevoit, Yu V. Teslenko, and M. M. Potyazhenko. "THE TOTAL POWER OF THE HEART AS A PROMISING PARAMETER FOR ASSESSING THE FUNCTIONAL STATE OF THE PATIENT DURING AN OBJECTIVE STRUCTURED CLINICAL EXAMINATION: GNOSEOLOGY, CLINICAL SIGNIFICANCE." Актуальні проблеми сучасної медицини: Вісник Української медичної стоматологічної академії 22, no. 3-4 (2022): 70–74. http://dx.doi.org/10.31718/2077-1096.22.3.4.70.

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This study reveals the clinical value of the parameter of the total power of the heart in assessing the functional state of the patient. The article is devoted to the expediency of using the method of short recording of heart rhythm variability in Objective Structured Clinical Examination. The purpose of the study was to investigate the total power in patients with noncommunicable diseases based on the results of recording a short record of heart rhythm variability as a promising parameter for assessing the functional state during an Objective Structured Clinical Examination. Mater

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Ostanin, S. A., V. I. Volkov #, V. P. Kulikov, and D. A. Kolosov. "Method for Compensation of Cardiac Rhythm Variability in Sphygmogram Analysis." Biomedical Engineering 42, no. 6 (2008): 280–83. http://dx.doi.org/10.1007/s10527-009-9066-z.

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Serhiyenko, V. A., M. I. Dolynay, V. B. Sehin, Y. V. Lazur, and A. A. Serhiyenko. "Disorders of circadian rhythms of heart rate variability in diabetic cardiac autonomic neuropathy: mechanisms and consequences." INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine) 20, no. 8 (2025): 549–58. https://doi.org/10.22141/2224-0721.20.8.2024.1461.

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Abnormalities in heart rate variability (HRV) may increase the risk of cardiovascular disease over the next six years from 4 to 10 %. It is reported that the probability of stroke or cardiac death can be immediately reduced by chronobiologically assessing HRV and optimizing timed treatment efficacy. Physiological cardiovascular activities are under the control of the cardiac autonomic nervous system. Damage to the autonomic nerves results in dysfunction in heart rate control and vascular dynamics, particularly in cardiac autonomic neuropathy (CAN). Autonomic imbalance in the sympathetic (SNS)

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Maksumova, N. V., V. V. Fattakhov, and M. N. Nasrullaev. "Heart rate variability in the assessment of «benefit/risk» of infusion therapy." Kazan medical journal 93, no. 2 (2012): 371–73. http://dx.doi.org/10.17816/kmj2341.

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In order to assess the correctness of choice of medicinal treatment of a disease, safety of intravenous transfusions, the effectiveness of treatment Chosen was a method for the analysis of heart rate variability using a complex of diagnostic functional changes in the cardiac rhythm, «Kardioanalizator “Expert 01”» (СJSC «NPO “Markiz”», Saint-Petersburg). In patients with hypersympathicotonia marked was a tendency for rigidity of cariac rhythm, overstress condition, depletion and collapse of the adaptive systems. Treatment of such patients, including infusion therapy, should be done in a hospita

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MEYER, M., O. STIEDL, and B. KERMAN. "DISCRIMINATION BY MULTIFRACTAL SPECTRUM ESTIMATION OF HUMAN HEARTBEAT INTERVAL DYNAMICS." Fractals 11, no. 02 (2003): 195–204. http://dx.doi.org/10.1142/s0218348x03002063.

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The complexity of the cardiac rhythm is demonstrated to exhibit self-affine multifractal variability. The dynamics of heartbeat interval time series was analyzed by application of the multifractal formalism based on the Cramer theory of large deviations. The continuous multifractal large deviation spectrum uncovers the nonlinear fractal properties in the dynamics of heart rate and presents a useful diagnostic framework for discrimination and classification of patients with cardiac disease, e.g. congestive heart failure. The characteristic multifractal spectral pattern in heart transplant recip

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Popova, O. V., V. B. Rusanov, А. М. Nosovsky, and O. I. Orlov. "EMPLOYMENT OF THE DISTRIBUTION FUNCTION IN ANALYSIS OF THE CARDIAC RHYTHM VARIABILITY." Aerospace and Environmental Medicine 59, no. 3 (2025): 31–36. https://doi.org/10.21687/0233-528x-2025-59-3-31-36.

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Humans adapt to environmental conditions owing to complex mechanisms of regulation. Nonlinear physiological processes add plasticity to the physiological systems during adaptation. One of the methods to assess body functioning is analysis of the cardiac rhythm variability (CRV). Traditional linear approaches rely on static and spectral analyses to describe cyclic changes leaving out of account the fact that cardiac rhythm exemplifies a determinate chaos in biological systems. In this context, distribution function is an objective criterion for a more precise presentation of changes in regulato

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Pellegrino, Peter R., Alicia M. Schiller, and Irving H. Zucker. "Validation of pulse rate variability as a surrogate for heart rate variability in chronically instrumented rabbits." American Journal of Physiology-Heart and Circulatory Physiology 307, no. 1 (2014): H97—H109. http://dx.doi.org/10.1152/ajpheart.00898.2013.

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Heart rate variability (HRV) is a function of cardiac autonomic tone that is widely used in both clinical and animal studies. In preclinical studies, HRV measures are frequently derived using the arterial pulse waveform from an implanted pressure telemetry device, termed pulse rate variability (PRV), instead of the electrocardiogram signal in accordance with clinical guidelines. The acceptability of PRV as a surrogate for HRV in instrumented animals is unknown. Using rabbits implanted with intracardiac leads and chronically implanted pressure transducers, we investigated the correlation and ag

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Nelushi, A. M., C. H. Manathunga, N. G. S. Shantha Gamage, and Tadachika Nakayama. "Assessing Cardiac Sympatho-Vagal Balance Through Wavelet Transform Analysis of Heart Rate Variability." Applied Sciences 15, no. 4 (2025): 1687. https://doi.org/10.3390/app15041687.

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Heart rate variability (HRV), which is the variation between consecutive heartbeats, reflects the electrical activity of the heart and provides insight into the autonomic nervous system (ANS) function. This study uses wavelet transform-based HRV feature extraction to investigate cardiac sympatho-vagal balance. Both the continuous wavelet transform (CWT) and discrete wavelet transform (DWT) methods were applied in different steps. DWT was used for R-peak detection and CWT and MODWT were used to generate spectrograms from RR intervals. Frequency components (HF, LF, and VLF) within 0.003–0.4 Hz w

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Ivanova, Ye. "LABORATORY-INSTRUMENTAL COMPARISONS OF CARDIAC RHYTHM VARIABILITY IN NEWBORNS FOLLOWING HYPOXIA." Neonatology, surgery and perinatal medicine 9, no. 4(34) (2019): 66–74. http://dx.doi.org/10.24061/2413-4260.ix.4.34.2019.4.

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Yu, Ze-Yan, Eugenie R. Lumbers, Karen J. Gibson, and Andrew D. Stevens. "EFFECTS OF HYPOXAEMIA ON FOETAL HEART RATE, VARIABILITY AND CARDIAC RHYTHM." Clinical and Experimental Pharmacology and Physiology 25, no. 7-8 (1998): 577–84. http://dx.doi.org/10.1111/j.1440-1681.1998.tb02255.x.

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Huikuri, Heikki V., Markku K. Linnaluoto, Tapio Seppänen, et al. "Circadian rhythm of heart rate variability in survivors of cardiac arrest." American Journal of Cardiology 70, no. 6 (1992): 610–15. http://dx.doi.org/10.1016/0002-9149(92)90200-i.

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CONSTANT, Isabelle, Elizabeth VILLAIN, Dominique LAUDE, Arlette GIRARD, Isabelle MURAT, and Jean-Luc ELGHOZI. "Heart rate control of blood pressure variability in children: a study in subjects with fixed ventricular pacemaker rhythm." Clinical Science 95, no. 1 (1998): 33–42. http://dx.doi.org/10.1042/cs0950033.

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1.To investigate the influence of heart rate variability on blood pressure variability, short-term variability in heart rate and blood pressure was studied in 10 children with fixed ventricular pacemaker rhythm (80 beats/min). Ten healthy children, in sinus rhythm, served as a reference population. 2.Arterial blood pressure and heart rate were measured continuously using a finger arterial device and an ECG respectively. Power spectra for heart rate and blood pressure (systolic and diastolic) were calculated in both supine and orthostatic positions. In addition, acute changes in blood pressure

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Maev, I. V., Georgiy L. Yurenev, and T. V. Yureneva-Tkhorzhevskaya. "Clinical significance of heart rhythm variability in patients with gastroesophageal reflux disease." Clinical Medicine (Russian Journal) 94, no. 8 (2016): 574–82. http://dx.doi.org/10.18821/0023-2149-2016-94-8-574-582.

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Cardiac manifestations of gastroesophageal reflux disease (GERD) including retrosternal pain and cardiac rhythm disorders were often mentioned in early publications. However, classification of GERD adopted at the 2005 Montreal congress does not include such conditions. Non-coronarogenic pain in the thoracic cage is recognized to be a typical esophageal syndrome while the reflex spasm of coronary arteries and cardiac rhythm disorders associated with GERD should be regarded as manifestations of comorbidity of GERD and cardiovascular diseases. Arrhythmias occur in 30% of patients with GERD, but r

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Sheiko, Nataliia I., and Volodymyr P. Feketa. "DYNAMICS OF HEART RATE VARIABILITY UNDER THE INFLUENCE OF COURSE YOGA BREATHING EXERCISES ON HEALTHY YOUNG PEOPLE." Wiadomości Lekarskie 72, no. 4 (2019): 613–16. http://dx.doi.org/10.36740/wlek201904120.

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Introduction: Heart rate variability is a highly informative non-invasive method of research not only for the functional state of the cardiovascular system and also for the integrative regulatory activity of the autonomic nervous system. The positive effect of diaphragmatic breathing is positive in the mode of biological feedback using portable devices, but there is little evidence of the use of yoga breathing gymnastics in order to influence the heart rate variability. The aim: To compare the possibilities of using courses of breathing gymnastics of yogis and diaphragmatic breathing sessions

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Popova, O. V., V. B. Rusanov, E. S. Luchitskaya, and О. I. Orlov. "REGARDING THE CARDIAC RHYTHM DISORDERS IN SPACE MISSIONS." Aerospace and Environmental Medicine 58, no. 5 (2024): 15–24. http://dx.doi.org/10.21687/0233-528x-2024-58-5-15-24.

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It is common knowledge that during space missions (SMs) the cosmonauts are subjected to stresses. One of potential SMs problems is disorders in the bioelectrical parameters of the myocardium conductivity or arrhythmias. The paper analyzes the results of investigations into the changes of cardiac rhythm variability in a group of 5 cosmonauts (46 ± 4.5 yrs of age) using ECG records containing episodes of atrial and/or ventricular arrhythmias. Mean mission duration of each cosmonaut was about six months as a standard. Analysis of the experimental data on occurrence of cardiac rhythm disorders may

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Sergeeva, Elena Gennadevna, Tatiana Vladimirovna Ibragimova, and Mihail Dmitrievich Didur. "Biofeedback and correction of cardiac rhythm variability in athletes training for endurance." Interactive science, no. 4 (26) (April 24, 2018): 32–36. http://dx.doi.org/10.21661/r-470122.

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Kukushkin, Yu A., A. I. Maistrov, and A. V. Bogomolov. "Rhythmocardiogram Approximation Methods for Calculation of Spectral Parameters of Cardiac Rhythm Variability." Biomedical Engineering 44, no. 3 (2010): 92–103. http://dx.doi.org/10.1007/s10527-010-9165-x.

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Wiśniowska, Barbara, Zofia M. Bielecka, and Sebastian Polak. "How circadian variability of the heart rate and plasma electrolytes concentration influence the cardiac electrophysiology – model-based case study." Journal of Pharmacokinetics and Pharmacodynamics 48, no. 3 (2021): 387–99. http://dx.doi.org/10.1007/s10928-021-09744-1.

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AbstractThe circadian rhythm of cardiac electrophysiology is dependent on many physiological and biochemical factors. Provided, that models describing the circadian patterns of cardiac activity and/or electrophysiology which have been verified to the acceptable level, modeling and simulation can give answers to many of heart chronotherapy questions. The aim of the study was to assess the performance of the circadian models implemented in Cardiac Safety Simulator v 2.2 (Certara, Sheffield, UK) (CSS), as well as investigate the influence ofcircadian rhythms on the simulation results in terms of

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CONSTANT, Isabelle, Dominique LAUDE, Isabelle MURAT, and Jean-Luc ELGHOZI. "Pulse rate variability is not a surrogate for heart rate variability." Clinical Science 97, no. 4 (1999): 391–97. http://dx.doi.org/10.1042/cs0970391.

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To investigate the differences between heart rate (HR) variability and pulse rate (PR) variability, short-term variability of finger pulse wave and ECG signals were studied in 10 children with a fixed ventricular pacemaker rhythm (80 beats/min). Ten healthy children in sinus rhythm served as a reference population. Distal PR and HR were measured continuously using a Finapres device and an ECG respectively. Power spectra for HR and PR were calculated in both the supine and orthostatic positions. In paced subjects, PR spectra exhibited the characteristic respiratory peak, although the HR spectra

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Aydin, Duygu, Siti Sugih Hartiningsih, Melike Gokce Izgi, et al. "Potential beneficial effects of foot bathing on cardiac rhythm." Clinical & Investigative Medicine 39, no. 6 (2016): 48. http://dx.doi.org/10.25011/cim.v39i6.27501.

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Purpose: Foot bathing therapy is a simple technique that induces sensations of comfort and relaxation. The aim of this study was to examine the effect of foot bathing therapy on heart rate variability (HRV) parameters in a healthy population. Methods: Participants were twenty healthy female subjects (median age=20.67 years, SD=1.04). The recording ECG was applied for 5 minutes before and for 5 minutes after foot bathing therapy of 10 minutes. Subjects rested for 10 minutes without recording ECG in order to stabilize autonomic parameters. The digital signals were then transferred to a laptop an

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Dzhishambaev, E. D., S. I. Khakimova, N. O. Amanalieva, Yu A. Kroshkin, and L. M. Amurhanova. "HEART RATE AND QT VARIABILITY IN PATIENTS WITH METABOLIC SYNDROME COMPLICATED BY CARDIAC ARRHYTHMIA." Eurasian heart journal, no. 2 (June 30, 2012): 59–64. http://dx.doi.org/10.38109/2225-1685-2012-2-59-64.

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One hundred and eighty three male patients aged from 35 to 55 years were examined to study the heart rate variability and the QT dispersion at the metabolic syndrome complicated with cardiac arrhythmias. The diminution of the temporal pattern of heart rate variability, increase of the both sympathetic tone and sympathetic-vagal ratio were revealed in patients with supraventricular and ventricular rhythm disturbances. These changes were especially characteristic for patients with atrial fibrillation. QT dispersion was higher in patients with ventricular arrhythmias in comparison with other grou

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Abril, Ernesto A., Ernesto M. Abril, Diana D. Marín, and Leonardo M. Abril. "Physical tests in the selection of electrical lineman depending on the cardiac rhythm when working at height for the first time." E3S Web of Conferences 57 (2018): 03006. http://dx.doi.org/10.1051/e3sconf/20185703006.

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In the present work of investigation, the pulse cardiac is monitoring with a heart rate sensor. All data record is obtained of a healthy person group, five junior and one expert electric lineman, Pulse cardiac let show the behavior of the heart when responding to physical effort and stress situation. So that we relate the required physical effort evidenced by a calorific map, the condition of stress due to the fear of falling and the variability of the cardiac pulse. Study is presented in stages. In the first stage, it is possible to demonstrate the increase of the cardiac pulse due to the eff

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Demin, D. B. "THE ASSESSMENT OF REACTIONS OF POLYGRAPHIC PARAMETERS AT HRV-BIOFEEDBACK TRAINING IN ADOLESCENTS WITH DIFFERENT VARIANTS OF CARDIAC AUTONOMIC NERVOUS SYSTEM TONE." Annals of the Russian academy of medical sciences 67, no. 2 (2012): 11–15. http://dx.doi.org/10.15690/vramn.v67i2.117.

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There is examine a character of change of brain bioelectric activity and polygraphic indicators at sessions of biofeedback by heart rhythm variability parameters (HRV-biofeedback) in 15–17 years adolescents who have different variants of cardiac autonomic nervous system tone. It is taped, that adolescents with cardiac balanced tone have more intensive optimization of functional brain activity in comparison with adolescents who have cardiac sympathetic tone — increase on alpha-activity and theta-activity depression in electroencephalogram structure. There were optimization of neurodynamic proce

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T, Vyasaraj, and Veena N. Hegde. "Heart Rate Variability-A Review." Journal of University of Shanghai for Science and Technology 23, no. 07 (2021): 1241–46. http://dx.doi.org/10.51201/jusst/21/07296.

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Information about the health can be obtained by measuring various physiological parameters such as Heart Rate, Heart Rate Variability (HRV), Nerve conduction, brain activity, blood oxygen saturation level etc. The useful information resulted from the systematic analysis of these physical parameters are helpful for clinicians to make better decisions. HRV reflects the state of the Autonomic Nervous System (ANS) defined as the variance in the time between successive heartbeats expressed in milliseconds. The various factors that affects HRV are diet, nutrition, age, alcohol, gender, cardiac rhyth

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Korobeynikov, Georgiy, Yevgeniy Imas, Lesia Korobeynikova, et al. "Body Composition and Heart Rhythm Variability in Elite Wrestlers." Sport Mont 19, S2 (2021): 147–51. http://dx.doi.org/10.26773/smj.210925.

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The aim of the research was to study the body composition and heart rhythm variability in elite wrestlers. In the study we used: Omron BF511 body composition monitor, we obtained and analyzed data on the body composition of 8 highly qualified athletes, members of the Ukrainian national team in Greco-Roman wrestling in 5 weight cate- gories. 67 kg - 1 person, 72 kg - 1 person, 77 kg - 3 people, 87 kg - 2 people and 97 kg - 1 person. Vegetative regula- tion was assessed according to the indicators of statistical and spectral analysis of heart rhythm variability. For this purpose, we used a porta

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Kravchenko, V., and K. Demidova. "Heart rhythm variation during affective pictures viewing in women in different phases of the menstrual cycle." Bulletin of Taras Shevchenko National University of Kyiv. Series: Biology 80, no. 1 (2020): 35–40. http://dx.doi.org/10.17721/1728_2748.2020.80.35-40.

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The peculiarities of the dynamics of the spectral indices of cardiac rhythm variability in 32 women 17-23 years of age while viewing emotional IAPS (International affective picture system) images in different phases of the menstrual cycle were studied. It is shown that the differences in the regulation of the heart rhythm associated with viewing emotional images of different types are manifested mainly in the follicular phase of the menstrual cycle. During this period, significant differences in viewing emotional images of different types were found in the absolute and relative power of the ve

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Cournoyer, A., E. Notebaert, S. Cossette, et al. "LO03: Impact of the conversion to a shockable rhythm from a non-shockable rhythm for patients suffering from out-of-hospital cardiac arrest." CJEM 20, S1 (2018): S7. http://dx.doi.org/10.1017/cem.2018.65.

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Introduction: Patients suffering from out-of-hospital cardiac arrest (OHCA) with an initial shockable rhythm (ventricular tachycardia or ventricular fibrillation) have higher odds of survival than those suffering from non-shockable rhythm (asystole or pulseless electrical activity). Because of that prognostic significance, patients with an initial non-shockable rhythm are often not considered for advanced resuscitation therapies such as extracorporeal resuscitation. However, the prognostic significance of the conversion to a shockable rhythm from an initially non-shockable rhythm remains uncer

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Stepura, E. "Analysis of cardiac rhythm variability in Jersey breed cows with different vegetative status." Genetics and breeding of animals, no. 1 (May 19, 2021): 17–22. http://dx.doi.org/10.31043/2410-2733-2021-1-17-22.

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Purpose: Conduct an analysis of cardiac rhythm variability in the cows of the Jersey breed with a different vegetative status.Materials and methods. Indicators of the electrocardiogram (ECG) and cardiac rhythm variability studied on cows of the Jersey breed (n = 103). For the analysis and removal of ECG, the animal studied used the program «Conan-4.5» in the system of frontal administrations according to the method of P. M. Roshchensky. Clinical research methods were carried out according to the methods of clinical inspection of animals B. V. Ears and included — inspection, palpation, percussi

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Arushanyan, E. B., O. A. Baida, S. S. Mastyagin, and A. V. Popov. "Significance of chronotypic specificity of healthy individuals for the variability of cardiac rhythm." Human Physiology 32, no. 2 (2006): 193–96. http://dx.doi.org/10.1134/s0362119706020125.

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Feaktsistava, Natalia, Volga Sujayeva, and Swetlana Sudzhaeva. "The significance of cardiac rhythm variability value assessment in partients with infective endocarditis." E Journal of Cardiovascular Medicine 1, no. 2 (2013): 32–35. http://dx.doi.org/10.15511/ejcm.13.00232.

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Kaplan, Rachel M., Paul D. Ziegler, Jodi Koehler, Taya V. Glotzer, and Rod S. Passman. "Atrial fibrillation variability on long-term monitoring of implantable cardiac rhythm management devices." Clinical Cardiology 40, no. 11 (2017): 1044–48. http://dx.doi.org/10.1002/clc.22766.

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Shushkovska, Y. Y., O. І. Afanasiuk, and O. M. Kolesnyk. "Vegetative regulation of cardiac activity under the influence of the “air raid” alarm." Reports of Vinnytsia National Medical University 28, no. 1 (2024): 104–8. http://dx.doi.org/10.31393/reports-vnmedical-2024-28(1)-18.

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Annotation. The analysis of heart rate variability indicators makes it possible to explain the mechanisms of adaptation of the organism to changing environmental conditions, to changing environmental conditions. The goal isto establish the psychological characteristics of stress, to determine changes in heart rate variability in students of higher medical education under martial law, to provide measures for the correction of psychological features. We examined 54 people – 38 women and 16 men, average age – 23.32±0.08 years, who had the application “Air Alarm” application installed on a mobile

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WOZNIAK, JACEK, RAFAL DABROWSKI, DARIUSZ LUCZAK, et al. "Evaluation of Heart Rhythm Variability and Arrhythmia in Children with Systemic and Localized Scleroderma." Journal of Rheumatology 36, no. 1 (2009): 191–96. http://dx.doi.org/10.3899/jrheum.080021.

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Objective.To evaluate possible disturbances in autonomic regulation and cardiac arrhythmias in children with localized and systemic scleroderma.Methods.There were 40 children included in the study: 20 with systemic and 20 with localized scleroderma. The control group comprised 20 healthy children.Results.In 24-hour Holter recording, the average rate of sinus rhythm was significantly higher in the groups with systemic and localized scleroderma than in the control group, but there was no significant difference between them. The variability of heart rhythm in both groups was significantly decreas

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Sibrecht, Greta, Tomasz Krauze, Renata Dobkowska, Andrzej Wykrętowicz, Jarosław Piskorski, and Przemysław Guzik. "Rationale, design and methods planned in a prospective study concerning the circadian rhythm of heart rate asymmetry in healthy subjects." Journal of Medical Science 89, no. 4 (2020): e492. http://dx.doi.org/10.20883/medical.e492.

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Heart rate asymmetry (HRA) is a physiological phenomenon caused by an unequal (asymmetric) contribution of heart rate decelerations and accelerations to the variability (variance) and microstructure of the heart rhythm of sinus origin. HRA has been studied in healthy people and patients with heart failure, diabetes, obstructive sleep apnoea, ischaemic heart disease, and survivors of myocardial infarction. HRA is a particular form of the heart rate variability (HRV) phenomenon related to the changes in the duration of cardiac cycles of sinus origin. HRV is influenced by physical activity, age,

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Zhang, Huanhuan, Jinhua He, Yanru Du, Meinv Liu, and Jianli Li. "Prolonged asystole induced by trigeminocardiac reflex accompanied with abnormal heart rate variability during percutaneous balloon compression: a case report." Journal of International Medical Research 51, no. 1 (2023): 030006052211486. http://dx.doi.org/10.1177/03000605221148618.

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Trigeminocardiac reflex (TCR) can result in bradycardia and even cardiac arrest, and is reversible with elimination of the stimulus. Here, we report the case of a 68-year-old man who experienced cardiac arrest during percutaneous balloon compression for the treatment of trigeminal neuralgia. In this patient, sinus rhythm did not recover after stimulation removal, causing us to successfully perform cardiopulmonary resuscitation (CPR). The patient regained a sinus rhythm and was pretreated with atropine 0.5 mg, allowing the operation to be started again. The operation was completed successfully

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Serhiyenko, A. A., T. V. Tsaryk, Y. I. Pavlovskiy, and V. A. Serhiyenko. "Glycemic variability and diabetic cardiac autonomic neuropathy." INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine) 20, no. 4 (2024): 225–32. http://dx.doi.org/10.22141/2224-0721.20.4.2024.1398.

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Cardiac autonomic neuropathy (CAN) is closely associated with an approximately five-fold increase in the risk of cardiovascular mortality in patients with diabetes mellitus (DM). Impaired autonomic function of the cardiovascular system in DM, which leads to the development of CAN, can be accompanied by coronary artery ischemia, heart rhythm disturbances, “silent” myocardial infarction, severe orthostatic hypotension, and sudden cardiac death syndrome. The article provides an analysis of literature data on the impact of glycemic variability (GV) on diabetic CAN development. This review analyzed

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Lee, Elizabeth Ann Davis, and Sue A. Theus. "Lower Heart Rate Variability Associated With Military Sexual Trauma Rape and Posttraumatic Stress Disorder." Biological Research For Nursing 14, no. 4 (2012): 412–18. http://dx.doi.org/10.1177/1099800412454453.

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Low heart rate variability (HRV) can occur with psychological disorders such as posttraumatic stress disorder (PTSD). The purpose of this study was to examine the association between PTSD by trauma type and decreased HRV measures in female veterans with cardiac symptoms. This secondary analysis utilized data from a previous study of female veterans ( n = 125) examined for cardiac symptoms by Holter and electrocardiogram recordings at a Veterans Affairs medical center. The mean HRV measure from three 10-s data segments with spontaneous respirations was obtained for each subject. PTSD diagnosis

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Malinowski, Krzysztof S., Tomasz H. Wierzba, J. Patrick Neary, Paweł J. Winklewski, and Magdalena Wszędybył-Winklewska. "Heart Rate Variability at Rest Predicts Heart Response to Simulated Diving." Biology 12, no. 1 (2023): 125. http://dx.doi.org/10.3390/biology12010125.

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A characteristic feature of the cardiac response to diving is the uncertainty in predicting individual course. The aim of the study was to determine whether resting regulatory heart rate determinants assessed before diving may be predictors of cardiac response in a simulated diving test. The research was conducted with 65 healthy volunteers (37 women and 28 men) with an average age of 21.13 years (20–27 years) and a BMI of 21.49 kg/m2 (16.60–28.98). The simulated diving test consisted of stopping breathing after maximum inhaling and voluntarily immersing the face in water (8–10 °C) for as long

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Enert, A. V., D. G. Apalkov, S. R. Pereletova, K. V. Trubchenko, and T. V. Saprina. "Analysis of the contribution of obstructive sleep apnea/hypopnea syndrome and glycemic level variability to the development and progression of cardiac arrhythmias in patients with type 2 diabetes mellitus." Diabetes mellitus 27, no. 2 (2024): 158–67. http://dx.doi.org/10.14341/dm13021.

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In this review, information is presented within the triad: obstructive sleep apnea/hypopnea syndrome (OSA), glycemic variability, and cardiac arrhythmias in patients with type 2 diabetes mellitus (DM2). Epidemiological aspects, pathogenetic relationships, possible instrumental and laboratory diagnostic methods, as well as approaches to personalized therapy are analyzed. Research is being actively conducted in certain areas of the designated triad, however, no studies have been found that include simultaneous monitoring of indicators reflecting these disorders in patients with DM2. Many issues

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Bursacovschi, Daniela, Valeriu Revenco, Maria Robu, and Oleg Arnaut. "Cardiac rhythm profile and heart rate variability in cancer therapy-related cardiac dysfunction among non-Hodgkin lymphoma patients." Romanian Journal of Medical Practice 19, no. 4 (2024): 420–28. https://doi.org/10.37897/rjmp.2024.4.13.

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Background. Predicting the baseline risk of cancer therapy-related cardiac dysfunction in clinical settings remains challenging, even with numerous established risk factors related to both cancer and cardiovascular health. The role of incorporating Holter ECG monitoring into the routine assessment of patients undergoing cancer therapy is not well established. It is not fully understood that this method can enhance the early detection of cancer therapy-related cardiac dysfunction, allowing for timely therapeutic adjustments and improving of the patient’s outcomes. Aim. Emphasize the utility of

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PAN, Zhenxing, and Shinji DOI. "0240 Global Bifurcation Structure and Variability of Rhythm of a Cardiac Pacemaker Cell Model." Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME 2009.22 (2010): 224. http://dx.doi.org/10.1299/jsmebio.2009.22.224.

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Dobrin, A. V., and N. L. Karpova. "The connection of lateral preferences with the specificity of cardiac rhythm variability in children." International Journal of Psychophysiology 131 (October 2018): S104—S105. http://dx.doi.org/10.1016/j.ijpsycho.2018.07.287.

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