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Heart rate variability and health

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https://www.readbyqxmd.com/read/28818539/playing-a-rigged-game-inequality-s-effect-on-physiological-stress-responses
#1
Martin S Shapiro, Rhanda Rylant, Amanda de Lima, Andrea Vidaurri, Herman van de Werfhorst
High income and wealth inequality corresponds with high rates of various health and social problems. One possible factor that could be contributing to this correlation is stress experienced by those being treated unfairly in an unequal society. The present experiment attempted to simulate aspects of income inequality in a lab setting while recording several measures of stress. Participants (n=96) were assigned to one of four groups and played a memory game against a confederate opponent to earn "money" to spend in a lab market...
August 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28814850/increased-parasympathetic-cardiac-modulation-in-patients-with-acute-exacerbation-of-copd-how-should-we-interpret-it
#2
Erika Zavaglia Kabbach, Adriana Mazzuco, Audrey Borghi-Silva, Ramona Cabiddu, Aline Galvão Agnoleto, Jessica Fernanda Barbosa, Luiz Carlos Soares de Carvalho Junior, Renata Gonçalves Mendes
BACKGROUND: Cardiac autonomic modulation (CAM) is impaired in patients with stable COPD. Exacerbation aggravates the patients' health status and functional capacity. While the clinical and functional effects of exacerbation are known, no studies investigated CAM during exacerbation and whether there is a relationship between CAM and functional capacity and dyspnea. METHODS: Thirty-two patients with moderate to severe COPD were enrolled into two groups: stable COPD (GSta, n=16) and acute exacerbation of COPD (GAE, n=16)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28814378/mhealth-technologies-for-palliative-care-patients-at-the-interface-of-in-patient-to-outpatient-care-protocol-of-feasibility-study-aiming-to-early-predict-deterioration-of-patient-s-health-status
#3
Gudrun Theile, Vanessa Klaas, Gerhard Tröster, Matthias Guckenberger
BACKGROUND: Palliative care patients are a particularly vulnerable population and one of the critical phases in patients' trajectories is discharge from specialized in-patient palliative care into outpatient care, where availability of a palliative care infrastructure is highly variable. A relevant number of potentially avoidable readmissions and emergency visits of palliative patients is observed due to rapid exacerbation of symptoms indicating the need for a closer patient monitoring...
August 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28810469/psychological-factors-and-self-rated-health-an-observative-study-on-cardiological-patients
#4
Claudia Chiavarino, Chiara Poggio, Franco Rusconi, Anna Angela Rachele Beretta, Stefano Aglieri
This study investigated the association of illness representations, awareness of bodily states and health complaints to self-rated health in N = 150 consecutive patients with heart disease (ischaemic disease, heart failure and heart valve disease) and explored differences between 'health optimist' and 'health pessimist' patients. After controlling for medical variables, health complaints accounted for 14.2 per cent of patients' self-rated health, and illness representations contributed for another 16...
June 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28802637/blood-pressure-responses-to-dietary-sodium-association-with-autonomic-cardiovascular-function-in-normotensive-adults
#5
Evan L Matthews, Michael S Brian, David G Edwards, Sean D Stocker, Megan M Wenner, William B Farquhar
Blood pressure responses to dietary sodium vary widely person-to-person. Salt sensitive rodent models display altered autonomic function, a trait thought to contribute to poor cardiovascular health. Thus, we hypothesized that increased salt sensitivity (SS) in normotensive humans would be associated with increased muscle sympathetic nerve activity (MSNA), decreased high frequency heart rate variability (HF-HRV), and decreased baroreflex sensitivity. Healthy normotensive men and women completed 1week of high (300mmol·day(-1)) and 1week of low (20mmol·day(-1)) dietary sodium (random order) with 24h mean arterial pressure (MAP) assessed on the last day of each diet to assess SS...
August 6, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28802208/acute-effects-of-visits-to-urban-green-environments-on-cardiovascular-physiology-in-women-a-field-experiment
#6
Timo Lanki, Taina Siponen, Ann Ojala, Kalevi Korpela, Arto Pennanen, Pekka Tiittanen, Yuko Tsunetsugu, Takahide Kagawa, Liisa Tyrväinen
BACKGROUND: Epidemiological studies have reported positive associations between the amount of green space in the living environment and mental and cardiovascular human health. In a search for effect mechanisms, field studies have found short-term visits to green environments to be associated with psychological stress relief. Less evidence is available on the effect of visits on cardiovascular physiology. OBJECTIVES: To evaluate whether visits to urban green environments, in comparison to visits to a built-up environment, lead to beneficial short-term changes in indicators of cardiovascular health...
August 9, 2017: Environmental Research
https://www.readbyqxmd.com/read/28794139/denervated-myocardium-is-preferentially-associated-with-sudden-cardiac-arrest-in-ischemic-cardiomyopathy-a-pilot-competing-risks-analysis-of-cause-specific-mortality
#7
James A Fallavollita, Jonathan D Dare, Randolph L Carter, Sunil Baldwa, John M Canty
BACKGROUND: Previous studies have identified multiple risk factors that are associated with total cardiac mortality. Nevertheless, identifying specific factors that distinguish patients at risk of arrhythmic death versus heart failure could better target patients likely to benefit from implantable cardiac defibrillators, which have no impact on nonsudden cardiac death. METHODS AND RESULTS: We performed a pilot competing risks analysis of the National Institutes of Health-sponsored PAREPET trial (Prediction of Arrhythmic Events with Positron Emission Tomography)...
August 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28777244/the-effect-of-a-sprint-interval-and-resistance-concurrent-exercise-training-program-on-aerobic-capacity-of-inactive-adult-women
#8
Lorena Salom Huffman, Shelby J Foote, Hayden Hyatt, James R McDonald, Danielle D Wadsworth, David D Pascoe
The purpose of this investigation was to examine the effects of high-intensity concurrent exercise training (CET) consisting of sprint intervals (SIT) and resistance exercise (RET) protocols on aerobic capacity in recreationally active, adult females. Fifty-three participants were pair-matched according to preliminary maximal aerobic capacity (VO2max) Bruce protocol assessment into level-grade (SIT0) or 6% incline (SIT6) groups. This 12-week intervention consisted of three CET sessions per week. SIT protocol consisted of 2 (weeks 1-6) then 3 (weeks 7-12) sets of three 40s sprints at specific intensities to evoke responses equivalent to 95% of age-predicted maximal heart rate (HR) interspersed with 20s of rest; with 1-minute of passive recovery between sets...
August 2, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28772096/prospective-identification-of-patients-at-risk-for-unwarranted-variation-in-treatment
#9
Amy S Kelley, Evan Bollens-Lund, Kenneth E Covinsky, Jonathan S Skinner, R Sean Morrison
BACKGROUND: Understanding factors associated with treatment intensity may help ensure higher value healthcare. OBJECTIVE: To investigate factors associated with Medicare costs among prospectively identified, seriously ill older adults and examine if baseline prognosis influences the impact of these factors. DESIGN/SUBJECTS: Prospective observation of Health and Retirement Study cohort with linked Medicare claims. MEASUREMENTS: We identified people with incident serious illness (a serious medical condition, for example, metastatic cancer or functional impairment); calculated subjects' one-year mortality risk; and then followed them for one year...
August 3, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28767203/stress-related-changes-in-body-form-results-from-the-whitehall-ii-study
#10
Britta Kubera, Claudine Leonhard, Andreas Rößler, Achim Peters
OBJECTIVE: Stress is associated with body mass gain in some people but with body mass loss in others. When the stressor persists, some people adapt with their stress responses, whereas others do not. Heart rate variability (HRV) reflects autonomic variability and is related to stress responses to psychosocial challenges. It was hypothesized that the combined effects of stress exposure and autonomic variability predict long-term changes in body form. METHODS: Data of 1,369 men and 612 women from the Whitehall II cohort were analyzed...
August 2, 2017: Obesity
https://www.readbyqxmd.com/read/28765031/shifts-in-the-light-dark-cycle-increase-unpredictability-of-the-cardiovascular-system
#11
Lubos Molcan, Michal Zeman
Physiological variables such as heart rate (HR) and blood pressure (BP) exhibit long-term circadian rhythms, which can be disturbed by shift work. On the other hand, short-term oscillations in HR and BP have a high prognostic value. Therefore, we aimed to determine if the short-term variability, complexity and entropy of HR and BP would be affected by a regular light/dark (LD) cycle and phase delay shifts of the LD cycle, leading to chronodisruption. Telemetry-monitored rats were exposed first to the regular LD cycle and then to shifts in LD for 8weeks...
September 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28757792/a-heart-failure-management-program-using-shared-medical-appointments
#12
Allison J Carroll, Hillary L Howrey, Susan Payvar, Kristen Deshida-Such, Mayank Kansal, Charanjit K Brar
BACKGROUND: Disease management programs for heart failure (HF) effectively reduce HF-related hospitalization rates and mortality. Shared medical appointments (SMAs) offer a cost-effective delivery method for HF disease management programs. However, few studies have evaluated this cost-effective delivery method of HF disease management among Veterans with acute HF. We hypothesized that Veterans who attended a multidisciplinary HF-SMA clinic promoting HF self-management, compared those who only received individual treatment through the HF specialty clinic, would have better 12-month hospitalization outcomes...
April 2017: Federal Practitioner: for the Health Care Professionals of the VA, DoD, and PHS
https://www.readbyqxmd.com/read/28756014/caffeine-and-cardiovascular-health
#13
Duncan Turnbull, Joseph V Rodricks, Gregory F Mariano, Farah Chowdhury
This report evaluates the scientific literature on caffeine with respect to potential cardiovascular outcomes, specifically relative risks of total cardiovascular disease (CVD), coronary heart disease (CHD) and acute myocardial infarction (AMI), effects on arrhythmia, heart failure, sudden cardiac arrest, stroke, blood pressure, hypertension, and other biomarkers of effect, including heart rate, cerebral blood flow, cardiac output, plasma homocysteine levels, serum cholesterol levels, electrocardiogram (EKG) parameters, heart rate variability, endothelial/platelet function and plasma/urine catecholamine levels...
July 26, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28749715/insomnia-and-autonomic-function-predict-well-being-in-patients-receiving-palliative-care
#14
Marco Warth, Jens Kessler, Hubert J Bardenheuer
BACKGROUND: The improvement of health-related quality of life (HRQOL) is one of the main treatment goals in end-of-life care. Although definitions and conceptualizations remain heterogeneous, many researchers proposed HRQOL to be considered as subjective patient well-being. However, research on its determinants in palliative care is rare, and little is known about the interplay between psychological and biological variables. OBJECTIVE: The aim of this study was to explain differences in terminally ill patients' acute well-being (AWB) by use of a multimethod approach, examining both self-ratings and physiological predictors...
July 27, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28739561/smartphone-based-monitoring-of-objective-and-subjective-data-in-affective-disorders-where-are-we-and-where-are-we-going-systematic-review
#15
Ezgi Dogan, Christian Sander, Xenija Wagner, Ulrich Hegerl, Elisabeth Kohls
BACKGROUND: Electronic mental health interventions for mood disorders have increased rapidly over the past decade, most recently in the form of various systems and apps that are delivered via smartphones. OBJECTIVE: We aim to provide an overview of studies on smartphone-based systems that combine subjective ratings with objectively measured data for longitudinal monitoring of patients with affective disorders. Specifically, we aim to examine current knowledge on: (1) the feasibility of, and adherence to, such systems; (2) the association of monitored data with mood status; and (3) the effects of monitoring on clinical outcomes...
July 24, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28738697/reduction-of-heart-rate-variability-in-hypertensive-elderly
#16
Paulo Evaristo de Andrade, Joice Anaize Tonon do Amaral, Laércio da Silva Paiva, Fernando Adami, Juliana Zangirolami Raimudo, Vitor Engrácia Valenti, Luiz Carlos de Abreu, Rodrigo Daminello Raimundo
INTRODUCTION: The elderly population grows globally every day, and along with it the incidence of high blood pressure also grows, following these data scientists seek tools to improve the health of this population, a widely used tool for assessing cardiovascular function is the heart rate variability(HRV), that is a mecanism that allows the investigation of oscillations in the intervals between consecutive heart beats (RR intervals). There are already studies on the autonomic nervous system in the elderly population, however, these studies investigated normotensive patients and there is little research in hypertensive patients...
July 24, 2017: Blood Pressure
https://www.readbyqxmd.com/read/28734974/the-effects-of-pneumoperitoneum-and-the-steep-trendelenburg-position-on-heart-rate-variability-and-cerebral-oxygenation-during-robotic-sacrocolpopexy
#17
Emad Matanes, Amir Weissman, Aleksandr Rivlin, Roy Lauterbach, Amnon Amit, Zeev Wiener, Lior Lowenstein
STUDY OBJECTIVE: The aim of the current study was to investigate how steep Trendelenburg positioning with pneumoperitoneum modifies brain oxygenation and autonomic nervous system modulation of heart rate variability during robotic sacrocolpopexy. DESIGN: A 5-minute computerized ECG, cerebral O2 saturation (cSO2), systemic O2 saturation (sSO2), heart rate (HR), diastolic blood pressure (BP), systolic BP and end tidal CO2 tension were recorded immediately after anesthesia induction (baseline phase) and after alterations in positioning and in intra-abdominal pressure...
July 19, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28733431/addition-of-24-hour-heart-rate-variability-parameters-to-the-cardiovascular-health-study-stroke-risk-score-and-prediction-of-incident-stroke-the-cardiovascular-health-study
#18
Rohan K Bodapati, Jorge R Kizer, Willem J Kop, Hooman Kamel, Phyllis K Stein
BACKGROUND: Heart rate variability (HRV) characterizes cardiac autonomic functioning. The association of HRV with stroke is uncertain. We examined whether 24-hour HRV added predictive value to the Cardiovascular Health Study clinical stroke risk score (CHS-SCORE), previously developed at the baseline examination. METHODS AND RESULTS: N=884 stroke-free CHS participants (age 75.3±4.6), with 24-hour Holters adequate for HRV analysis at the 1994-1995 examination, had 68 strokes over ≤8 year follow-up (median 7...
July 21, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28725199/heart-performance-determination-by-visualization-in-larval-fishes-influence-of-alternative-models-for-heart-shape-and-volume
#19
Prescilla Perrichon, Martin Grosell, Warren W Burggren
Understanding cardiac function in developing larval fishes is crucial for assessing their physiological condition and overall health. Cardiac output measurements in transparent fish larvae and other vertebrates have long been made by analyzing videos of the beating heart, and modeling this structure using a conventional simple prolate spheroid shape model. However, the larval fish heart changes shape during early development and subsequent maturation, but no consideration has been made of the effect of different heart geometries on cardiac output estimation...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28721034/readmission-after-copd-exacerbation-scale-determining-30-day-readmission-risk-for-copd-patients
#20
Christine Sm Lau, Brianna L Siracuse, Ronald S Chamberlain
BACKGROUND: COPD affects over 13 million Americans, and accounts for over half a million hospitalizations annually. The Hospital Readmission Reduction Program, established by the Affordable Care Act requires the Centers for Medicare and Medicaid Services to reduce payments to hospitals with excess readmissions for COPD as of 2015. This study sought to develop a predictive readmission scale to identify COPD patients at higher readmission risk. METHODS: Demographic and clinical data on 339,389 patients from New York and California (derivation cohort) and 258,113 patients from Washington and Florida (validation cohort) were abstracted from the State Inpatient Database (2006-2011), and the Readmission After COPD Exacerbation (RACE) Scale was developed to predict 30-day readmission risk...
2017: International Journal of Chronic Obstructive Pulmonary Disease
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