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Respiratory sinus arrhythmia

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https://www.readbyqxmd.com/read/28191323/autonomic-imbalance-captures-maternal-and-fetal-circulatory-response-to-pre-eclampsia
#1
Igor Lakhno
BACKGROUND: Pre-eclampsia (PE) is a gestational disease featured by hypertension, arterial systemic vasculopathy, multiple organ failure and fetal compromise. The aim of the investigation was to determine the role of maternal respiratory sinus arrhythmia (RSA) in regulation of the fetal circulatory system in case of healthy pregnancy and in PE. METHODS: The investigation of maternal and fetal HRV and fetal CTG variables in 106 patients at 34-40 weeks of gestation was performed...
2017: Clinical Hypertension
https://www.readbyqxmd.com/read/28186496/ecg-derived-respiration-comparison-of-time-domain-approaches-and-application-to-altered-breathing-patterns-of-patients-with-schizophrenia
#2
Marcus Schmidt, Andy Schumann, Jonas Mueller, Karl-Juergen Baer, Georg Rose
In life-threatening diseases and in several clinical interventions, monitoring of vital parameters is essential to guarantee the safety of patients. Besides monitoring the electrocardiogram (ECG), it is helpful to assess respiratory activity. If the respiration signal itself is not recorded, it can be extracted from the ECG (i.e. ECG derived respiration, EDR). In the present paper, we compared six EDR approaches, namely RS-decline quantified by central moments, respiratory sinus arrhythmia (RSA), R-wave amplitude, QRS area, RS-distance and maximum RS-slope...
February 10, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28169914/cardiac-autonomic-function-and-hot-flashes-among-perimenopausal-and-postmenopausal-women
#3
Carolyn J Gibson, Wendy Berry Mendes, Michael Schembri, Deborah Grady, Alison J Huang
OBJECTIVE: Abnormalities in autonomic function are posited to play a pathophysiologic role in menopausal hot flashes. We examined relationships between resting cardiac autonomic activity and hot flashes in perimenopausal and postmenopausal women. METHODS: Autonomic function was assessed at baseline and 12 weeks among perimenopausal and postmenopausal women (n = 121, mean age 53 years) in a randomized trial of slow-paced respiration for hot flashes. Pre-ejection period (PEP), a marker of sympathetic activation, was measured with impedance cardiography...
February 6, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28155224/symptomatic-inspiration-induced-atrio-ventricular-block-treated-with-pacemaker-implant
#4
Diego A Hoffmann, Andrés Nicolás Atamañuk, Graciela Aurora Ruiz, Raul Chirife, Maria Cristina Tentori, Simón Salzberg
BACKGROUND: The respiratory sinus arrhythmia (RSA) is the most common cardiac arrhythmia. It consists of phasic variations of sinus cycle length produced by an autonomic reflex, and is characterized by increased heart rate during inspiration and decline in expiration. This phenomenon is due to a reduction of the parasympathetic tone during inspiration, causing a rise in the heart rate, while during expiration the opposite phenomenon occurs. This arrhythmia is more frequent in young adults, although it can also be seen in any age group...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28150954/measuring-the-slot-machine-zone-with-attentional-dual-tasks-and-respiratory-sinus-arrhythmia
#5
W Spencer Murch, Stephanie W M Chu, Luke Clark
Recent accounts of problematic electronic gaming machine (EGM) gambling have suggested attentional pathology among at-risk players. A putative slot machine zone is characterized by an intense immersion during game play, causing a neglect of outside events and competing goals. Prior studies of EGM immersion have relied heavily upon retrospective self-report scales. Here, the authors attempt to identify behavioral and psychophysiological correlates of the immersion experience. In samples of undergraduate students and experienced EGM users from the community, they tested 2 potential behavioral measures of immersion during EGM use: peripheral target detection and probe-caught mind wandering...
February 2, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28126420/respiratory-effort-from-the-photoplethysmogram
#6
Paul S Addison
The potential for a simple, non-invasive measure of respiratory effort based on the pulse oximeter signal - the photoplethysmogram or 'pleth' - was investigated in a pilot study. Several parameters were developed based on a variety of manifestations of respiratory effort in the signal, including modulation changes in amplitude, baseline, frequency and pulse transit times, as well as distinct baseline signal shifts. Thirteen candidate parameters were investigated using data from healthy volunteers. Each volunteer underwent a series of controlled respiratory effort maneuvers at various set flow resistances and respiratory rates...
January 23, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28107890/affective-impairment-in-chronic-low-blood-pressure
#7
Stefan Duschek, Alexandra Hoffmann, Gustavo A Reyes Del Paso
OBJECTIVE: Physical complaints such as faintness, dizziness, cold limbs and headaches have been well-established in chronic low blood pressure (hypotension). This study investigated the occurrence of adverse emotional states and the symptoms of depression in this condition. As autonomic dysregulation, particularly diminished sympathetic tone, is believed to be involved in the etiology of hypotension, the impact of different facets of autonomic cardiovascular control on mood and depressive symptoms was also explored...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28103058/emotion-dysregulation-across-emotion-systems-in-attention-deficit-hyperactivity-disorder
#8
Erica D Musser, Joel T Nigg
Children with attention deficit/hyperactivity disorder (ADHD) display alterations in both emotion reactivity and regulation. One mechanism underlying such alternations may be reduced coherence among emotion systems (i.e., autonomic, facial affect). The present study sought to examine this. One hundred children (50 with ADHD combined presentation), 7-11 years of age (62% male, 78% White), completed an emotion induction and suppression task. This task was coded for facial affect behavior across both negative and positive emotion eliciting task conditions...
January 19, 2017: Journal of Clinical Child and Adolescent Psychology
https://www.readbyqxmd.com/read/28042190/respiratory-sinus-arrhythmia-and-heart-period-in-infancy-as-correlates-of-later-oppositional-defiant-and-callous-unemotional-behaviors
#9
Nicholas J Wagner, W Roger Mills-Koonce, Michael T Willoughby, Cathi B Propper, Peter D Rehder, Noa Gueron-Sela
Extant literature suggests that oppositional defiant (ODD) and callous-unemotional (CU) behaviors in childhood and adolescence are associated with distinct patterns of psychophysiological functioning and that individual differences in these patterns have implications for developmental pathways to disorder. Very little is known about the associations between psychophysiological functioning in infancy and later ODD and CU behaviors. This study examined associations between basal autonomic nervous system (ANS) functioning in infancy and ODD and CU behaviors in later childhood...
January 2017: International Journal of Behavioral Development
https://www.readbyqxmd.com/read/28039663/whooping-cough-in-adults-a-series-of-severe-cases
#10
Katarzyna Zycinska, M Cieplak, M Chmielewska, A Nitsch-Osuch, A Klaczkow, M Hadzik-Blaszczyk, Z Kur, K A Wardyn
Bordetella pertussis is a gram-negative aerobic coccobacillus causing contagious respiratory tract disease called whooping cough. The virulence factors consist of pertussis toxin, filamentous hemagglutinin, fimbriae, lipooligosaccharide, and adenylate cyclase toxin. The disease causes a worldwide threat to public health despite a high vaccination coverage. The course of whooping cough in adults is frequently atypical, causing difficulty in diagnosis. In this report we present five patients hospitalized with Bordetella pertussis infection manifesting atypical and severe symptoms...
December 31, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28031059/suicide-ideation-among-high-risk-adolescent-females-examining-the-interplay-between-parasympathetic-regulation-and-friendship-support
#11
Matteo Giletta, Paul D Hastings, Karen D Rudolph, Daniel J Bauer, Matthew K Nock, Mitchell J Prinstein
Poor physiological self-regulation has been proposed as a potential biological vulnerability for adolescent suicidality. This study tested this hypothesis by examining the effect of parasympathetic stress responses on future suicide ideation. In addition, drawing from multilevel developmental psychopathology theories, the interplay between parasympathetic regulation and friendship support, conceptualized as an external source of regulation, was examined. At baseline, 132 adolescent females (M age = 14.59, SD = 1...
December 29, 2016: Development and Psychopathology
https://www.readbyqxmd.com/read/27991819/autonomic-reactivity-and-vulnerability-to-depression-a-multi-wave-study
#12
Jonathan P Stange, Jessica L Hamilton, Thomas M Olino, David M Fresco, Lauren B Alloy
The ability of the autonomic nervous system to flexibly adapt to environmental changes is thought to indicate efficient use of self-regulatory resources. Deficits in autonomic reactivity appear to characterize current depression; however, whether autonomic reactivity confers vulnerability to future depression when individuals encounter environmental stressors is unknown. Fluctuations in respiratory sinus arrhythmia (RSA) and heart rate (HR) were evaluated in response to emotion-eliciting films among 134 undergraduates...
December 19, 2016: Emotion
https://www.readbyqxmd.com/read/27991809/the-psychophysiology-of-parenting-individual-differences-in-autonomic-reactivity-to-positive-and-negative-mood-inductions-and-observed-parental-affect-during-dyadic-interactions-with-children
#13
Arin M Connell, Glen C Dawson, Sarah Danzo, Hannah N McKillop
Parenting is a complex activity driven, in part, by parental emotional and physiological responses. However, work examining the physiological underpinnings of parenting behavior is still in its infancy, and very few studies have examined such processes beyond early childhood. The current study examines associations between Autonomic Nervous System (ANS) indices of parents' physiological reactivity to positive and negative mood states and observed parental affect during a series of discussion tasks with their adolescent child...
December 19, 2016: Journal of Family Psychology: JFP
https://www.readbyqxmd.com/read/27987071/parasympathetic-nervous-system-reactivity-moderates-associations-between-children-s-executive-functioning-and-social-and-academic-competence
#14
Julia D McQuade, Taylor E Penzel, Jennifer S Silk, Kyung Hwa Lee
This study examined whether children with poor executive functioning (EF) evidenced less social and academic impairments, compared to other children, if they demonstrated adaptive parasympathetic nervous system (PNS) regulation during experiences of failure. Participants with and without clinical elevations in ADHD symptoms (N = 61; 9-13 years; 48% male; 85% Caucasian) were administered a battery of EF tests and completed manipulated social and cognitive failure tasks. While participants completed failure tasks, respiratory sinus arrhythmia reactivity (RSA-R) was measured as an indicator of PNS reactivity...
December 17, 2016: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/27957701/autonomic-cardiovascular-control-and-executive-function-in-chronic-hypotension
#15
Stefan Duschek, Alexandra Hoffmann, Gustavo A Reyes Del Paso, Ulrich Ettinger
BACKGROUND: Chronic low blood pressure (hypotension) is characterized by complaints such as fatigue, reduced drive, dizziness, and cold limbs. Additionally, deficits in attention and memory have been observed. Autonomic dysregulation is considered to be involved in the origin of this condition. PURPOSE: The study explored autonomic cardiovascular control in the context of higher cognitive processing (executive function) in hypotension. METHODS: Hemodynamic recordings were performed in 40 hypotensive and 40 normotensive participants during execution of four classical executive function tasks (number-letter task, n-back task, continuous performance test, and flanker task)...
December 12, 2016: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/27909214/initial-mainstream-cultural-orientations-predict-early-social-participation-in-the-mainstream-cultural-group
#16
Marina M Doucerain, Sonya S Deschênes, Jean-Philippe Gouin, Catherine E Amiot, Andrew G Ryder
This work adopts a perspective that construes acculturation as a dynamic intergroup process, and social contact with members of the new community as a key mechanism underlying cultural adaptation. We argue that migrants' initial self-reported mainstream cultural orientation constitutes an important antecedent of early social participation in the new community. Results from two longitudinal studies of newly arrived international students (N = 98 and N = 60) show that more positive initial mainstream cultural orientations prospectively predict higher social participation, specifically in the mainstream group, over the following months...
November 30, 2016: Personality & Social Psychology Bulletin
https://www.readbyqxmd.com/read/27857052/permanent-atrial-fibrillation-in-heart-failure-patients-as-another-condition-with-increased-reverse-triiodothyronine-concentration
#17
Maciej Jakowczuk, Dominika Zalas, Maciej Owecki
OBJECTIVE: To fully investigate the thyroid hormonal function in patients with the most common arrhythmia - atrial fibrillation. MATERIALS AND METHODS: 120 patients (aged 55-85 yrs) with symptoms of congestive heart failure exacerbation and no other concomitant disorders (inclusion criteria: normal cardiac troponin T at admission and 12 hours after, normal renal, hepatic and respiratory function; exclusion criteria: inflammatory state, history of myocardial infarction)...
September 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/27854467/parental-management-of-peers-and-autonomic-nervous-system-reactivity-in-predicting-adolescent-peer-relationships
#18
Kelly M Tu, Stephen A Erath, Mona El-Sheikh
The present study examined sympathetic and parasympathetic indices of autonomic nervous system reactivity as moderators of the prospective association between parental management of peers via directing of youths' friendships and peer adjustment in a sample of typically developing adolescents. Participants included 246 adolescents at Time 1 (T1) [47% boys; 66% European American (EA), 34% African American (AA)] and 226 adolescents at Time 2 (T2; 45% boys; 67% EA, 33% AA). Adolescents were approximately 16 and 17 years old at T1 and T2, respectively...
March 2017: Developmental Psychology
https://www.readbyqxmd.com/read/27836526/influences-of-lifestyle-factors-on-cardiac-autonomic-nervous-system-activity-over-time
#19
Mandy Xian Hu, Femke Lamers, Eco J C de Geus, Brenda W J H Penninx
Physical activity, alcohol use and smoking might affect cardiovascular disease through modifying autonomic nervous system (ANS) activity. We investigated: 1) whether there are consistent relationships between lifestyle factors and cardiac ANS activity over time, and 2) whether 2-year changes in lifestyle factors relate to 2-year changes in cardiac activity. Baseline (n=2618) and 2-year follow-up (n=2010) data of the Netherlands Study of Depression and Anxiety was combined. Baseline data was collected in the Netherlands from 2004-2007...
January 2017: Preventive Medicine
https://www.readbyqxmd.com/read/27825900/relational-victimization-and-depressive-symptoms-the-role-of-autonomic-nervous-system-reactivity-in-emerging-adults
#20
Leigh Ann Holterman, Dianna K Murray-Close, Nicole L Breslend
The goal of the current study was to investigate the association between relational victimization, defined as being the target of aggressive acts that damage relationships (e.g., gossip, social exclusion) and depressive symptoms during the relatively understudied developmental period of emerging adulthood. In addition, as individual differences in stress reactivity may influence the outcomes associated with victimization by peers, the moderating roles of sympathetic nervous system (SNS; as measured by skin conductance reactivity) and parasympathetic nervous system (PNS; as measured by respiratory sinus arrhythmia) reactivity to social and non-social stressors were examined...
November 5, 2016: International Journal of Psychophysiology
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