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heart rate variability and sleep

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https://www.readbyqxmd.com/read/29783029/comparison-of-stanford-b-aortic-dissection-patients-who-received-tevar-combined-with-or-without-sleep-apnea-syndrome
#1
Xin Li, Wenwu Cai, Ping Zhang, Kun Fang, Jieting Zhu, Chang Shu
BACKGROUND: Patients with Stanford B aortic dissection usually complicated with sleep apnea syndrome. This condition always threatens the patients' respiration situation. In this study, we collected and analysis data of patients' peri-operative managements of Thoracic Endovascular Aortic Repair (TEVAR) for Stanford B Aortic Dissection (AD) complicated with Sleep Apnea Syndrome (SAS). Comparison has been made between these SAS patients and those who without SAS. METHODS: Between June 2013 and June 2014, the clinical data and outcomes of the Stanford B AD patients in the department of vascular surgery in the Second Xiangya Hospital were retrospectively reviewed and studied...
May 18, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29781091/fetal-assessment-in-buprenorphine-maintained-women-using-fetal-magnetoencephalography-a-pilot-study
#2
Diana Escalona-Vargas, Jessica L Coker, Shona Ray-Griffith, Eric R Siegel, Curtis L Lowery, Zachary N Stowe, Hari Eswaran
BACKGROUND AND AIMS: In-utero exposure to opioids including buprenorphine (BUP) has been shown to affect fetal activity, specifically heart-rate variability (FHRV) and fetal movement (FM). Our objective was to extract simultaneous recordings of fetal cardiac, and brain-related activity in BUP-maintained and non-opioid exposed pregnant women using a novel non-invasive biomagnetic technique. DESIGN: A pilot study was conducted, recording and analyzing biomagnetic data from fetuses of BUP-maintained and non-opioid exposed pregnant women...
May 20, 2018: Addiction
https://www.readbyqxmd.com/read/29763454/multivariate-classification-of-brugada-syndrome-patients-based-on-autonomic-response-to-exercise-testing
#3
Mireia Calvo, Daniel Romero, Virginie Le Rolle, Nathalie Béhar, Pedro Gomis, Philippe Mabo, Alfredo I Hernández
Ventricular arrhythmias in Brugada syndrome (BS) typically occur at rest and especially during sleep, suggesting that changes in the autonomic modulation may play an important role in arrhythmogenesis. The autonomic response to exercise and subsequent recovery was evaluated on 105 patients diagnosed with BS (twenty-four were symptomatic), by means of a time-frequency heart rate variability (HRV) analysis, so as to propose a novel predictive model capable of distinguishing symptomatic and asymptomatic BS populations...
2018: PloS One
https://www.readbyqxmd.com/read/29748792/the-independent-and-combined-effects-of-respiratory-events-and-cortical-arousals-on-the-autonomic-nervous-system-across-sleep-stages
#4
Jiuxing Liang, Xiangmin Zhang, Xiaomin He, Li Ling, Chunyao Zeng, Yuxi Luo
PURPOSE: During sleep, respiratory events readily modulate the autonomic nervous system (ANS). Whether such modulation is caused by the respiratory event itself or the cortical arousal that follows and whether these influences differ across sleep stages are not clear. Thus, we aimed to study the independent and combined effects of respiratory events and cortical arousals on the ANS across sleep stages. METHODS: We recruited 22 male patients with sleep apnea-hypopnea syndrome (SAHS) and analyzed the differences in the indices of heart rate variability among normal respiration (NR), pathological respiratory events without cortical arousals (PR), cortical arousals without respiratory events (CA), and the coexistence of PR and CA (PR&CA), by sleep stage...
May 10, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29745535/-novel-type-of-unperturbed-sleep-monitoring-scheme-under-pillow-based-on-hidden-markov-model
#5
Xiang Li, Yong Liu, Pengbin Chen, Jiewei Wu, Han Zhang
Sleep status is an important indicator to evaluate the health status of human beings. In this paper, we proposed a novel type of unperturbed sleep monitoring system under pillow to identify the pattern change of heart rate variability (HRV) through obtained RR interval signal, and to calculate the corresponding sleep stages combined with hidden Markov model (HMM) under the no-perception condition. In order to solve the existing problems of sleep staging based on HMM, ensemble empirical mode decomposition (EEMD) was proposed to eliminate the error caused by the individual differences in HRV and then to calculate the corresponding sleep stages...
April 1, 2018: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29731622/chronic-obstructive-pulmonary-disease-severity-and-its-association-with-obstructive-sleep-apnea-syndrome-impact-on-cardiac-autonomic-modulation-and-functional-capacity
#6
Katiany Thays Lopes Zangrando, Renata Trimer, Luiz Carlos Soares de Carvalho, Guilherme Peixoto Tinoco Arêas, Flávia Cristina Rossi Caruso, Ramona Cabiddu, Meliza Goi Roscani, Fabíola Paula Galhardo Rizzatti, Audrey Borghi-Silva
Background: The study was conducted to determine the impact of chronic obstructive pulmonary disease (COPD) in association with obstructive sleep apnea syndrome (OSAS) on cardiac autonomic control and functional capacity. Subjects and methods: The study was a cross-sectional prospective controlled clinical study. Heart rate variability indices of 24 COPD (n = 12) and COPD+OSAS (n = 12) patients were evaluated and compared by electrocardiographic recordings acquired during rest, active postural maneuver (APM), respiratory sinus arrhythmia maneuver (RSA-m), and the 6-minute walk test (6MWT)...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29722079/electrodermal-activity-patterns-in-sleep-stages-and-their-utility-for-sleep-versus-wake-classification
#7
Anne Herlan, Jörg Ottenbacher, Johannes Schneider, Dieter Riemann, Bernd Feige
As the prevalence of sleep disorders is increasing, new methods for ambulatory sleep measurement are required. This paper presents electrodermal activity in different sleep stages and a sleep detection algorithm based on electrodermal activity. We analysed electrodermal activity and polysomnographic data of 43 healthy subjects and 48 patients with sleep disorders. Electrodermal activity was measured using an ambulatory device worn at the wrist. Two parameters to describe electrodermal activity were defined based on previous literature: EDASEF (electrodermal activity-smoothed feature) as parameter for skin conductance level; and EDAcounts (number of electrodermal activity-peaks) as skin conductance responses...
May 2, 2018: Journal of Sleep Research
https://www.readbyqxmd.com/read/29719424/heart-rate-phenotypes-and-clinical-correlates-in-a-large-cohort-of-adults-without-sleep-apnea
#8
Zhaoyang Huang, Balaji Goparaju, He Chen, Matt T Bianchi
Background: Normal sleep is associated with typical physiological changes in both the central and autonomic nervous systems. In particular, nocturnal blood pressure dipping has emerged as a strong marker of normal sleep physiology, whereas the absence of dipping or reverse dipping has been associated with cardiovascular risk. However, nocturnal blood pressure is not measured commonly in clinical practice. Heart rate (HR) dipping in sleep may be a similar important marker and is measured routinely in at-home and in-laboratory sleep testing...
2018: Nature and Science of Sleep
https://www.readbyqxmd.com/read/29713290/high-altitude-affects-nocturnal-non-linear-heart-rate-variability-patch-ha-study
#9
Christopher J Boos, Kyo Bye, Luke Sevier, Josh Bakker-Dyos, David R Woods, Mark Sullivan, Tom Quinlan, Adrian Mellor
Background: High altitude (HA) exposure can lead to changes in resting heart rate variability (HRV), which may be linked to acute mountain sickness (AMS) development. Compared with traditional HRV measures, non-linear HRV appears to offer incremental and prognostic data, yet its utility and relationship to AMS have been barely examined at HA. This study sought to examine this relationship at terrestrial HA. Methods: Sixteen healthy British military servicemen were studied at baseline (800 m, first night) and over eight consecutive nights, at a sleeping altitude of up to 3600 m...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29710791/using-sleep-time-data-from-wearable-sensors-for-early-detection-of-migraine-attacks
#10
Pekka Siirtola, Heli Koskimäki, Henna Mönttinen, Juha Röning
The migraine is a chronic, incapacitating neurovascular disorder, characterized by attacks of severe headache and autonomic nervous system dysfunction. Among the working age population, the costs of migraine are 111 billion euros in Europe alone. The early detection of migraine attacks would reduce these costs, as it would shorten the migraine attack by enabling correct timing when taking preventive medication. In this article, whether it is possible to detect migraine attacks beforehand using wearable sensors is studied, and t preliminary results about how accurate the recognition can be are provided...
April 28, 2018: Sensors
https://www.readbyqxmd.com/read/29699592/effects-of-feet-warming-using-bed-socks-on-sleep-quality-and-thermoregulatory-responses-in-a-cool-environment
#11
Yelin Ko, Joo-Young Lee
BACKGROUND: As a way of helping to sleep in winter, methods of warming the feet through footbaths or heating pads before bedtime are tried. In particular, bed socks are popular during winter sleeping in Korea, but scientific evidence about the physiological effects of bed socks on sleep quality is rarely reported. The purpose of this study was to evaluate the effect of feet warming using bed socks on sleep quality and thermoregulatory responses during sleep in a cool environment. METHODS: Six young males (22...
April 24, 2018: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/29687266/physiological-and-psychological-determinants-of-whole-body-endurance-exercise-following-short-term-sustained-operations-with-partial-sleep-deprivation
#12
Michail E Keramidas, Magnus Gadefors, Lars-Ove Nilsson, Ola Eiken
PURPOSE: The study examined the effects of short-term field-based military training with partial sleep deprivation on whole-body endurance performance in well-trained individuals. METHODS: Before and after a 2-day sustained operations (SUSOPS), 14 cadets performed a 15-min constant-load cycling at 65% of peak power output (PPO; CLT65 ), followed by an exhaustive constant-load trial at 85% of PPO (CLT85 ). Physiological [oxygen uptake ([Formula: see text]O2 ), heart rate (HR), mean arterial pressure (MAP), cardiac output (CO), and regional oxygenation (TOI) in the frontal cerebral cortex and vastus lateralis muscle] and psychological [effort perception (RPE), affective valence (FS), and perceived activation (FAS)] variables were monitored during exercise...
April 23, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29680416/electrocardiographic-variables-in-children-with-syndromic-craniosynostosis-and-primary-snoring-to-mild-obstructive-sleep-apnea-significance-of-identifying-respiratory-arrhythmia-during-sleep
#13
Ellaha Kakar, Linda J A Corel, Robert C Tasker, Robbin de Goederen, Eppo B Wolvius, Irene M J Mathijssen, Koen F M Joosten
BACKGROUND: In the spectrum of children with symptomatic sleep disordered breathing (SDB), some individuals - such as those with upper airway resistance syndrome (UARS) - do not have abnormalities on polysomnography (PSG). In this study we have assessed whether assessment of respiratory arrhythmia (RA) and heart rate variability (HRV) analysis helps in management of children with syndromic craniosynostosis and none-to-mild obstructive sleep apnea (OSA). METHODS: Prospective cohort study in children aged 1-18 years old with syndromic craniosynostosis...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29662721/neural-mechanisms-of-qigong-sensory-training-massage-for-children-with-autism-spectrum-disorder-a-feasibility-study
#14
Kristin K Jerger, Laura Lundegard, Aaron Piepmeier, Keturah Faurot, Amanda Ruffino, Margaret A Jerger, Aysenil Belger
Objectives: Despite the enormous prevalence of autism spectrum disorder (ASD), its global impact has yet to be realized. Millions of families worldwide need effective treatments to help them get through everyday challenges like eating, sleeping, digestion, and social interaction. Qigong Sensory Training (QST) is a nonverbal, parent-delivered intervention recently shown to be effective at reducing these everyday challenges in children with ASD. This study tested the feasibility of a protocol for investigating QST's neural mechanism...
2018: Global Advances in Health and Medicine: Improving Healthcare Outcomes Worldwide
https://www.readbyqxmd.com/read/29659956/polyphenols-have-no-impact-on-endothelial-function-in-patients-with-obstructive-sleep-apnea-a-randomized-controlled-trial
#15
Wojciech Trzepizur, Vanessa Bironneau, Sylvain Recoquillon, Pascaline Priou, Nicole Meslier, Jean-François Hamel, Samir Henni, Astrid Darsonval, Khaled Messaoudi, Maria Carmen Martínez, Ramaroson Andriantsitohaina, Frédéric Gagnadoux
Background: Endothelial dysfunction, a pathophysiologic determinant of atherogenesis, has been found to occur in obstructive sleep apnea syndrome (OSA) and is improved by continuous positive airway pressure (CPAP). However, the efficacy of CPAP therapy is limited by variable adherence. Alternative treatment strategies are needed. The impact of polyphenols on endothelial function has never been evaluated in OSA. Objective: We evaluated the impact of 1-mo supplementation with grape juice polyphenols (GJPs) on the reactive hyperemia index (RHI), a validated measure of endothelial function in patients with severe OSA...
April 1, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29623047/sympathetic-metabolic-adaptations-and-oxidative-stress-in-autism-spectrum-disorders-how-far-from-physiology
#16
Antonietta Messina, Vincenzo Monda, Francesco Sessa, Anna Valenzano, Monica Salerno, Ilaria Bitetti, Francesco Precenzano, Rosa Marotta, Francesco Lavano, Serena M Lavano, Margherita Salerno, Agata Maltese, Michele Roccella, Lucia Parisi, Roberta I Ferrentino, Gabriele Tripi, Beatrice Gallai, Giuseppe Cibelli, Marcellino Monda, Giovanni Messina, Marco Carotenuto
Autism spectrum disorders (ASD) is a complex and multifaceted neurobehavioral syndrome with no specific cause still identified, despite the worldwide increasing (prevalence for 1,000 children from 6.7 to 14.6, between 2000 and 2012). Many biological and instrumental markers have been suggested as potential predictive factors for the precocious diagnosis during infancy and/or pediatric age. Many studies reported structural and functional abnormalities in the autonomic system in subjects with ASD. Sleep problems in ASD are a prominent feature, having an impact on the social interaction of the patient...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29621264/improving-the-understanding-of-sleep-apnea-characterization-using-recurrence-quantification-analysis-by-defining-overall-acceptable-values-for-the-dimensionality-of-the-system-the-delay-and-the-distance-threshold
#17
Sofía Martín-González, Juan L Navarro-Mesa, Gabriel Juliá-Serdá, G Marcelo Ramírez-Ávila, Antonio G Ravelo-García
Our contribution focuses on the characterization of sleep apnea from a cardiac rate point of view, using Recurrence Quantification Analysis (RQA), based on a Heart Rate Variability (HRV) feature selection process. Three parameters are crucial in RQA: those related to the embedding process (dimension and delay) and the threshold distance. There are no overall accepted parameters for the study of HRV using RQA in sleep apnea. We focus on finding an overall acceptable combination, sweeping a range of values for each of them simultaneously...
2018: PloS One
https://www.readbyqxmd.com/read/29619250/relationship-between-autonomic-cardiovascular-control-and-obstructive-sleep-apnoea-in-persons-with-spinal-cord-injury-a-retrospective-study
#18
Xizhe Fang, Min Yin Goh, Christopher O'Callaghan, David Berlowitz
Study design: Retrospective study. Objective: To determine if there is an association between obstructive sleep apnoea (OSA) and blood pressure (BP) pattern or heart rate variability (HRV) in people with spinal cord injury (SCI). Setting: A state-based spinal cord service in Victoria, Australia. Methods: We identified 42 subjects who had ambulatory BP monitoring (ABPM) within 6 months of a diagnostic sleep study at Austin Hospital between 2009 and 2014...
2018: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/29609720/heart-rate-variability-responses-of-individuals-with-and-without-saline-induced-obstructive-sleep-apnea
#19
Daniel Vena, T Douglas Bradley, Philip J Millar, John S Floras, Jonathan Rubianto, Bojan Gavrilovic, Elisa Perger, Azadeh Yadollahi
STUDY OBJECTIVES: Postoperative development of obstructive sleep apnea (OSA) has been attributed to the fluid overloaded state of patients during the postoperative period. In this context, alterations in cardiac autonomic regulation caused by OSA may explain the increased postoperative risk for adverse cardiovascular events. This study tests the hypothesis that individuals with fluid overload-induced OSA will experience autonomic dysregulation, compared to those without fluid overload-induced OSA...
April 15, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29608761/correlates-and-consequences-central-sleep-apnea-in-a-national-sample-of-u-s-veterans
#20
David Ratz, Wyndy Wiitala, M S Badr, Jennifer Burns, Susmita Chowdhuri
The prevalence and consequences of central sleep apnea (CSA) in adults are not well- described. By utilizing the large Veterans Health Administration (VHA) national administrative databases, we sought to determine the incidence, clinical correlates and impact of CSA on healthcare utilization in Veterans. Analysis of a retrospective cohort of patients with sleep disorders was performed from outpatient visits and inpatient admissions from fiscal years 2006 through 2012. The CSA group, defined by International Classification of Diseases-9, was compared to a non-CSA group...
March 28, 2018: Sleep
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