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heart rate variability and well-being

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https://www.readbyqxmd.com/read/29023738/klf2-mediates-enhanced-chemoreflex-sensitivity-disordered-breathing-and-autonomic-dysregulation-in-heart-failure
#1
Noah J Marcus, Rodrigo Del Rio, Yanfeng Ding, Harold D Schultz
KEY POINTS: Enhanced carotid body chemoreflex activity contributes to development of disordered breathing patterns, autonomic dysregulation and increases in incidence of arrhythmia in animal models of reduced ejection fraction heart failure. Chronic reductions in carotid artery blood flow are associated with increased carotid body chemoreceptor activity. Krüppel-like Factor 2 (KLF2) is a shear stress-sensitive transcription factor that regulates the expression of enzymes which have previously been shown to play a role in increased chemoreflex sensitivity...
September 6, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29016885/endogenous-pain-modulation-association-with-resting-heart-rate-variability-and-negative-affectivity
#2
Maaike Van Den Houte, Lukas Van Oudenhove, Katleen Bogaerts, Ilse Van Diest, Omer Van den Bergh
Objectives: Several chronic pain syndromes are characterized by deficient endogenous pain modulation as well as elevated negative affectivity and reduced resting heart rate variability. In order to elucidate the relationships between these characteristics, we investigated whether negative affectivity and heart rate variability are associated with endogenous pain modulation in a healthy population. Design, Subjects, and Methods: An offset analgesia paradigm with noxious thermal stimulation calibrated to the individual's pain threshold was used to measure endogenous pain modulation magnitude in 63 healthy individuals...
July 21, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29016780/analysis-of-the-heart-rate-variability-during-cryoballoon-ablation-of-atrial-fibrillation
#3
Hitoshi Mori, Ritsushi Kato, Yoshifumi Ikeda, Koji Goto, Sayaka Tanaka, So Asano, Yuichiro Shiki, Takahiko Nagase, Shiro Iwanaga, Shigeyuki Nishimura, Toshihiro Muramatsu, Kazuo Matsumoto
Aims: Vagal responses such as marked bradycardia or a rapid blood pressure decrease are often observed during pulmonary vein (PV) isolation of atrial fibrillation (AF) using a cryoballoon (CB). However, the relationship between the marked vagal response and change in the heart rate variability (HRV) as a marker of the autonomic tone is not well understood. Methods and results: Fifty-four paroxysmal AF patients underwent CB ablation. The CB ablation was started from the right sided PVs in 25 patients (R group) and left sided PVs in 29 (L group)...
July 31, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29016441/epidemiology-and-outcomes-of-infectious-spondylodiscitis-in-hemodialysis-patients
#4
Yueh-An Lu, Wei-Chiao Sun, George Kuo, Chao-Yu Chen, Huang-Kai Kao, YuJr Lin, Chia-Hui Lee, Cheng-Chieh Hung, Ya-Chung Tian, Yu-Shien Ko, Hsiang-Hao Hsu
STUDY DESIGN: A retrospective study of patients who were hospitalized for infectious spondylodiscitis over a 13 year period. OBJECTIVE: To elucidate the epidemiology and prognostic factors of infectious spondylodiscitis in hemodialysis (HD) patients and to identify the impact of HD on infectious spondylodiscitis. SUMMARY OF BACKGROUND DATA: Only a few case studies of infectious spondylodiscitis in HD patients can be found in the literature...
October 9, 2017: Spine
https://www.readbyqxmd.com/read/28993803/opinion-heart-rate-variability-health-and-well-being-a-systems-perspective-research-topic
#5
Angela J Grippo
No abstract text is available yet for this article.
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28992907/scaling-relationships-among-heart-rate-electrocardiography-parameters-and-body-weight
#6
Amanda Sarita Cruz Aleixo, Angélica Alfonso, Eunice Oba, Fabiana Ferreira de Souza, Raíssa Karolliny Salgueiro Cruz, Maurício Gianfrancesco Fillippi, Simone Biagio Chiacchio, Miriam Tsunemi, Maria Lucia Gomes Lourenço
Although heart rate (HR) is one of the most important clinical parameters determined via physical examinations, little information is available on the normal HR in dogs, which may be related to the high variability of body weight (BW) in this species. HR is determined by the discharge rate of the sinus node, which is dependent on the autonomic nervous system and the release of catecholamines. The allometric relationship between BW and HR in different species has been described as inversely proportional; however, this relationship has been refuted...
June 2017: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/28989070/personal-level-exposure-to-environmental-temperature-is-a-superior-predictor-of-endothelial-dependent-vasodilatation-than-outdoor-ambient-level
#7
Chinedu Ejike, Lu Wang, Mochuan Liu, Wei Wang, Masako Morishita, Robert L Bard, Wei Huang, Jack Harkema, Sanjay Rajagopalan, Robert D Brook
Environmental temperatures influence cardiovascular physiology. However, the majority of time is spent indoors, making outdoor-ambient temperatures inaccurate estimates of true exposures encountered by most individuals. We evaluated in 50 healthy adults the associations between previous 7-day outdoor-ambient (four occasions) and prior 24-hour personal-level (two occasions) environmental temperature exposures with blood pressure, heart rate variability, sleep parameters, and endothelial-dependent vasodilatation (brachial flow-mediated dilatation [FMD]) using generalized estimating equations...
September 28, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28986005/using-wearable-technology-to-detect-the-autonomic-signature-of-illness-severity-in-schizophrenia
#8
Matteo Cella, Łukasz Okruszek, Megan Lawrence, Valerio Zarlenga, Zhimin He, Til Wykes
INTRODUCTION: Research suggests that people with schizophrenia have autonomic dysfunctions. These have been linked to functioning problems, symptoms and considered a risk factor for illness chronicity. The aim of this study is to introduce a new Mobile Health (mHealth) method using wearable technology to assessing autonomic activity in people's everyday life. We aim to evaluate the new method acceptability and characterise the association between schizophrenia illness features and autonomic abnormalities...
October 3, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28984399/characterization-of-a-novel-capsaicin-heat-ongoing-pain-model
#9
R C Price, W Gandhi, C Nadeau, R Tarnavskiy, A Qu, E Fahey, L Stone, P Schweinhardt
BACKGROUND: Human experimental pain models provide an important translational link between pre-clinical models and clinical pain. Using topical capsaicin and continuous heat application, the novel capsaicin/heat ongoing pain (CHOP) model induces long-lasting experimental pain of which the perceived intensity can be individually adjusted. METHODS: In the CHOP model, capsaicin or control cream is applied to a 10 × 10 cm skin area and a heating pad is applied over the area after cream removal...
October 6, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28978872/the-impact-of-menstrual-cycle-phases-on-cardiac-autonomic-nervous-system-activity-an-observational-study-considering-lifestyle-diet-physical-activity-and-sleep-among-female-college-students
#10
Yuki Tada, Takahiro Yoshizaki, Yasutake Tomata, Yuri Yokoyama, Ayaka Sunami, Azumi Hida, Yukari Kawano
Studies examining the impact of menstrual cycle phases on the cardiac autonomic nervous system have produced inconsistent results. This study aimed to investigate this relationship, controlling for the confounding effects of diet, physical activity, and sleep, which can be affected by the menstrual cycle. Fifteen female college students with regular menses were enrolled. Data regarding 24-h heart rate variability (HRV), dietary intake, eating behavior, menstrual distress, and sleep and activity parameters were obtained during the follicular and luteal phases...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/28977195/recurrence-plots-a-new-tool-for-quantification-of-cardiac-autonomic-nervous-system-recovery-after-transplant
#11
Isabela Thomaz Takakura, Rosangela Akemi Hoshi, Márcio Antonio Santos, Flávio Correa Pivatelli, João Honorato Nóbrega, Débora Linhares Guedes, Victor Freire Nogueira, Tuane Queiroz Frota, Gabriel Castro Castelo, Moacir Fernandes de Godoy
OBJECTIVE: To evaluate a possible evolutionary post-heart transplant return of autonomic function using quantitative and qualitative information from recurrence plots. METHODS: Using electrocardiography, 102 RR tachograms of 45 patients (64.4% male) who underwent heart transplantation and that were available in the database were analyzed at different follow-up periods. The RR tachograms were collected from patients in the supine position for about 20 minutes. A time series with 1000 RR intervals was analyzed, a recurrence plot was created, and the following quantitative variables were evaluated: percentage of determinism, percentage of recurrence, average diagonal length, Shannon entropy, and sample entropy, as well as the visual qualitative aspect...
July 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28972003/latent-rheumatic-heart-disease-identifying-the-children-at-highest-risk-of-unfavorable-outcome
#12
Andrea Beaton, Twalib Aliku, Alyssa Dewyer, Marni Jacobs, Jiji Jiang, Chris T Longenecker, Sulaiman Lubega, Robert McCarter, Mariana Mirabel, Grace Mirembe, Judith Namuyonga, Emmy Okello, Amy Scheel, Emmanuel Tenywa, Craig Sable, Peter Lwabi
Background -Screening echocardiography (echo) has emerged as a potentially powerful tool for early diagnosis of rheumatic heart disease (RHD). The utility of screening echo hinges on the rate of RHD progression and the ability of penicillin prophylaxis to improve outcome. We report the longitudinal outcomes of a cohort of children with latent RHD and identify risk factors for unfavorable outcomes. Methods -This was a prospective natural history study conducted under the Ugandan RHD registry. Children with latent RHD and ≥1 year of follow-up were included...
September 27, 2017: Circulation
https://www.readbyqxmd.com/read/28964157/sign-and-magnitude-scaling-properties-of-heart-rate-variability-in-patients-with-end-stage-renal-failure-are-these-properties-useful-to-identify-pathophysiological-adaptations
#13
Claudia Lerma, Juan C Echeverría, Oscar Infante, Héctor Pérez-Grovas, Hortensia González-Gómez
The scaling properties of heart rate variability data are reliable dynamical features to predict mortality and for the assessment of cardiovascular risk. The aim of this manuscript was to determine if the scaling properties, as provided by the sign and magnitude analysis, can be used to differentiate between pathological changes and those adaptations basically introduced by modifications of the mean heart rate in distinct manoeuvres (active standing or hemodialysis treatment, HD), as well as clinical conditions (end stage renal disease, ESRD)...
September 2017: Chaos
https://www.readbyqxmd.com/read/28963884/yoga-mindfulness-based-stress-reduction-and-stress-related-physiological-measures-a-meta-analysis
#14
REVIEW
Michaela C Pascoe, David R Thompson, Chantal F Ski
BACKGROUND AND OBJECTIVES: Practices that include yoga asanas and mindfulness-based stress reduction for the management of stress are increasingly popular; however, the neurobiological effects of these practices on stress reactivity are not well understood. Many studies investigating the effects of such practices fail to include an active control group. Given the frequency with which people are selecting such interventions as a form of self-management, it is important to determine their effectiveness...
August 30, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28957877/heart-rate-variability-implications-for-perioperative-anesthesia-care
#15
Thomas Anthony Anderson
PURPOSE OF REVIEW: Heart rate variability (HRV) is a measure of the balance between both the parasympathetic and sympathetic nervous system and may provide useful information for anesthesia care providers. HRV may offer predictive information about critically ill and operative patients. Further, HRV collection provides real-time information of patient autonomic nervous system status and may allow tailoring of the analgesia for patients in the ICU and operating room. RECENT FINDINGS: Reduced and abnormal resting HRV predict sudden and nonsudden cardiac death...
September 27, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28955382/atrial-fibrillation-in-heart-failure-a-therapeutic-challenge-of-our-times
#16
REVIEW
Syeda Atiqa Batul, Rakesh Gopinathannair
Atrial fibrillation (AF) and heart failure (HF) are growing cardiovascular disease epidemics worldwide. There has been an exponential increase in the prevalence of AF and HF correlating with an increased burden of cardiac risk factors and improved survival rates in patients with structural heart disease. AF is associated with adverse prognostic outcomes in HF and is most evident in mild-to-moderate left ventricular (LV) dysfunction where the loss of "atrial kick" translates into poorer quality of life and increased mortality...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28953193/chronic-pain-related-changes-in-cardiovascular-regulation-and-impact-on-comorbid-hypertension-in-a-general-population-the-troms%C3%A3-study
#17
Stephen Bruehl, Roy Bjørkholt Olsen, Christian Tronstad, Knut Sevre, John W Burns, Henrik Schirmer, Christopher Sivert Nielsen, Audun Stubhaug, Leiv Arne Rosseland
Heart rate variability (HRV) and baroreflex sensitivity (BRS) are indexes reflecting the ability to maintain cardiovascular homeostasis amidst changing conditions. Evidence primarily from small studies suggests that both HRV and BRS may be reduced in individuals with chronic pain (CP), with potential implications for cardiovascular risk. We compared HRV and BRS between individuals with CP (broadly defined) and pain-free controls in a large unselected population sample. Participants were 1,143 individuals reporting clinically meaningful CP and 5,640 pain-free controls who completed a 106 sec...
September 25, 2017: Pain
https://www.readbyqxmd.com/read/28935830/the-impact-of-artifact-correction-methods-of-rr-series-on-heart-rate-variability-parameters
#18
Anderson Ivan Rincon Soler, Luiz Eduardo Virgilio Silva, Rubens Fazan, Luiz Otavio Murta Junior
Heart rate variability (HRV) analysis is widely used to investigate the autonomic regulation of the cardiovascular system. HRV is often analyzed using RR time series, which can be affected by different types of artifacts. Although there are several artifact correction methods, there is no study that compares their performances in actual experimental contexts. This work aimed to evaluate the impact of different artifact correction methods on several HRV parameters. Initially, 36 ECG recordings of control rats or rats with heart failure or hypertension were analyzed to characterize artifacts occurrence rates and distributions, in order to be mimicked in simulations...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28932907/effects-of-self-paced-interval-and-continuous-training-on-health-markers-in-women
#19
Luke J Connolly, Stephen J Bailey, Peter Krustrup, Jonathan Fulford, Chris Smietanka, Andrew M Jones
PURPOSE: To compare the effects of self-paced high-intensity interval and continuous cycle training on health markers in premenopausal women. METHODS: Forty-five inactive females were randomised to a high-intensity interval training (HIIT; n = 15), continuous training (CT; n = 15) or an inactive control (CON; n = 15) group. HIIT performed 5 × 5 min sets comprising repetitions of 30-s low-, 20-s moderate- and 10-s high-intensity cycling with 2 min rest between sets...
November 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28928581/a-comparative-study-of-intravenous-esmolol-labetalol-and-lignocaine-in-low-doses-for-attenuation-of-sympathomimetic-responses-to-laryngoscopy-and-endotracheal-intubation
#20
Ekta Ratnani, Om Prakash Sanjeev, Abhishek Singh, Manoj Tripathi, Hemant Kumar Chourasia
BACKGROUND: Direct layngoscopy and endotracheal intubation is a noxious stimuli and induces sympathomimetic responses. Although well tolerated in healthy subjects, it may impose life threatening arrhythmias, left ventricular failure or rupture of cerebral aneurysm in susceptible patients. Esmolol, Labetalol and Lignocaine attenuate these responses but are associated with side effects of bradycardia, hypotension etc. In lower doses, chances of these side effects are comparatively low. So we designed this prospective clinical trial to assess the efficacy of intravenous esmolol, labetalol and lignocaine in low doses for attenuation of sympathomimetic responses to endotracheal intubation...
July 2017: Anesthesia, Essays and Researches
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