keyword
MENU ▼
Read by QxMD icon Read
search

Low frequency hrv

keyword
https://www.readbyqxmd.com/read/28107340/association-of-diabetes-related-complications-with-heart-rate-variability-among-a-diabetic-population-in-the-uae
#1
Ahsan H Khandoker, Haitham M Al-Angari, Kinda Khalaf, Sungmun Lee, Wael Almahmeed, Habiba S Al Safar, Herbert F Jelinek
Microvascular, macrovascular and neurological complications are the key causes of morbidity and mortality among type II diabetes mellitus (T2DM) patients. The aim of this study was to investigate the alterations of cardiac autonomic function of diabetic patients in relation to three types of diabetes-related complications. ECG recordings were collected and analyzed from 169 T2DM patients in supine position who were diagnosed with nephropathy (n = 55), peripheral neuropathy (n = 64) and retinopathy (n = 106) at two hospitals in the UAE...
2017: PloS One
https://www.readbyqxmd.com/read/28104071/cardiac-autonomic-dysfunction-and-incidence-of-atrial-fibrillation-results-from-20-years-follow-up
#2
Sunil K Agarwal, Faye L Norby, Eric A Whitsel, Elsayed Z Soliman, Lin Y Chen, Laura R Loehr, Valentin Fuster, Gerardo Heiss, Josef Coresh, Alvaro Alonso
BACKGROUND: Cardiac autonomic perturbations frequently antecede onset of paroxysmal atrial fibrillation (AF). Interventions that influence autonomic inputs to myocardium may prevent AF. However, whether low heart rate or heart rate variability (HRV), which are noninvasive measures of cardiac autonomic dysfunction, are associated with AF incidence is unclear. OBJECTIVES: This study sought to study the association between HRV and risk of AF. METHODS: This study included 11,715 middle-aged adults in the ARIC (Atherosclerosis Risk In Communities) cohort with heart rate and HRV measures obtained from 2-min electrocardiogram recordings performed at baseline (1987 to 1989)...
January 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28099875/sustained-attention-and-heart-rate-variability-in-children-and-adolescents-with-adhd
#3
Kristi R Griffiths, Daniel S Quintana, Daniel F Hermens, Chris Spooner, Tracey W Tsang, Simon Clarke, Michael R Kohn
The autonomic nervous system (ANS) plays an important role in attention and self-regulation by modulating physiological arousal to meet environmental demands. Core symptoms of ADHD such as inattention and behavioral disinhibition may be related to dysregulation of the ANS, however previous findings have been equivocal. We examined autonomic activity and reactivity by assessing heart rate variability (HRV) in a large sample of un-medicated children and adolescents (6-19 years) with ADHD (n=229) compared to typically-developing controls (n=244) during rest and sustained attention...
January 15, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28095501/birth-weight-and-its-relationship-with-the-cardiac-autonomic-balance-in-healthy-children
#4
Livia Victorino Souza, Vanessa Oliveira, Franciele De Meneck, Ana Paula Grotti Clemente, Maria Wany Louzada Strufaldi, Maria do Carmo Franco
Several studies indicate that the fetal environment plays a significant role in the development of cardiometabolic disease later in life. However, a few studies present conflicting data about the correlation between birth weight and the impairment of cardiac autonomic modulation. The purpose of the present study was to provide further knowledge to elucidate this contradictory relationship. One hundred children aged 5 and 14 years had anthropometric parameters, body composition and blood pressure levels determined...
2017: PloS One
https://www.readbyqxmd.com/read/28091857/lack-of-heart-rate-variability-during-sleep-related-apnea-in-patients-with-temporal-lobe-epilepsy-tle-an-indirect-marker-of-sudep
#5
C S Nayak, S Sinha, M Nagappa, K Thennarasu, A B Taly
PURPOSE: Apneas occurring during sleep may precipitate autonomic instability in epilepsy patients making them susceptible to sudden death (SUDEP). Literature on heart rate variability (HRV) during apnea among patients with temporal lobe epilepsy (TLE) is sparse. The aim of this study was to characterize the HRV during the peri-apneic period in patients with TLE and compare with HRV of matched healthy individuals during the overnight polysomnographic (PSG) recording. Further, the role of carbamazepine (CBZ) in modulating peri-apneic HRV in the above cohort was also assessed...
January 14, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28079874/cerebral-modulation-of-the-autonomic-nervous-system-in-term-infants
#6
N Schneebaum Sender, R B Govindan, M T Whitehead, A N Massaro, M Metzler, J Wang, Y I Cheng, A J du Plessis
OBJECTIVE: Central topography of autonomic nervous system (ANS) function has yet to be fully deciphered. In adults it has been shown to lateralize sympathetic and parasympathetic influence predominantly to the right and left cerebral hemispheres, respectively. We examined functional topography of central ANS in newborn subjects utilizing spectral analysis of heart rate variability (HRV), an established measure of ANS function. STUDY DESIGN: We studied newborns with hypoxic-ischemic encephalopathy participating in a prospective study undergoing a therapeutic hypothermia protocol...
January 12, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28076450/time-course-of-changes-in-heart-rate-and-blood-pressure-variability-in-rats-with-myocardial-infarction
#7
R Aires, E B Pimentel, L Forechi, E M Dantas, J G Mill
Our aim was to determine the time course of changes in autonomic balance in the acute (1 and 3 days), sub-acute (7 days) and chronic (28 days) phases of myocardial infarction (MI) in rats. Autonomic balance was assessed by temporal and spectral analyses of blood pressure variability (BPV) and heart rate variability (HRV). Pulsatile blood pressure (BP) recordings (30 min) were obtained in awake and unrestrained male Wistar rats (N = 77; 8-10 weeks old) with MI (coronary ligature) or sham operation (SO). Data are reported as means±SE...
January 9, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28065709/-the-exercise-training-restores-the-heart-rate-variability-in-heart-failure-patients-a-systematic-review
#8
Victoria Segovia, Carlos Manterola, Marcelo González, Iván Rodríguez-Núñez
: Cardiovascular diseases are an important cause of morbidity and mortality in the general population. In this sense the autonomic imbalance is the cornerstone of the physiopathology underlying the development of these diseases. The aim of this study was to determine the efficacy of exercise training on heart rate variability (HRV) in adult patients with chronic heart failure. METHODOLOGY: A systematic literature review was conducted on electronic databases. The considered studies were randomized clinical trials, quasi-experimental studies with non-randomized control group, quasi-experimental studies with analysis of pre and post intervention and crossover studies with randomly assigned training and detraining periods...
January 5, 2017: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/28056816/optimization-of-pressure-settings-during-adaptive-servo-ventilation-support-using-real-time-heart-rate-variability-assessment-initial-case-report
#9
Teruhiko Imamura, Daisuke Nitta, Koichiro Kinugawa
BACKGROUND: Adaptive servo-ventilation (ASV) therapy is a recent non-invasive positive pressure ventilation therapy that was developed for patients with heart failure (HF) refractory to optimal medical therapy. However, it is likely that ASV therapy at relatively higher pressure setting worsens some of the patients' prognosis compared with optimal medical therapy. Therefore, identification of optimal pressure settings of ASV therapy is warranted. CASE PRESENTATION: We present the case of a 42-year-old male with HF, which was caused by dilated cardiomyopathy, who was admitted to our institution for evaluating his eligibility for heart transplantation...
January 5, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28051874/effects-of-a-passive-online-software-application-on-heart-rate-variability-and-autonomic-nervous-system-balance
#10
Beverly Rubik
OBJECTIVE: This study investigated whether short-term exposure to a passive online software application of purported subtle energy technology would affect heart rate variability (HRV) and associated autonomic nervous system measures. METHODS: This was a randomized, double-blinded, sham-controlled clinical trial (RCT). The study took place in a nonprofit laboratory in Emeryville, California. Twenty healthy, nonsmoking subjects (16 females), aged 40-75 years, participated...
January 4, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28051319/effects-of-yoga-on-heart-rate-variability-and-depressive-symptoms-in-women-a-randomized-controlled-trial
#11
I-Hua Chu, Wen-Lan Wu, I-Mei Lin, Yu-Kai Chang, Yuh-Jen Lin, Pin-Chen Yang
OBJECTIVES: The purpose of the study was to investigate the effects of a 12-week yoga program on heart rate variability (HRV) and depressive symptoms in depressed women. METHODS: This was a randomized controlled trial. Twenty-six sedentary women scoring ≥14 on the Beck Depression Inventory-II were randomized to either the yoga or the control group. The yoga group completed a 12-week yoga program, which took place twice a week for 60 min per session and consisted of breathing exercises, yoga pose practice, and supine meditation/relaxation...
January 4, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28050606/long-term-exposure-to-space-s-microgravity-alters-the-time-structure-of-heart-rate-variability-of-astronauts
#12
Kuniaki Otsuka, Germaine Cornelissen, Satoshi Furukawa, Yutaka Kubo, Mitsutoshi Hayashi, Koichi Shibata, Koh Mizuno, Tatsuya Aiba, Hiroshi Ohshima, Chiaki Mukai
BACKGROUND: Spaceflight alters human cardiovascular dynamics. The less negative slope of the fractal scaling of heart rate variability (HRV) of astronauts exposed long-term to microgravity reflects cardiovascular deconditioning. We here focus on specific frequency regions of HRV. METHODS: Ten healthy astronauts (8 men, 49.1 ± 4.2 years) provided five 24-hour electrocardiographic (ECG) records: before launch, 20.8 ± 2.9 (ISS01), 72.5 ± 3.9 (ISS02) and 152.8 ± 16...
December 2016: Heliyon
https://www.readbyqxmd.com/read/28043860/differential-heart-rate-variability-and-physiological-responses-associated-with-accumulated-short-and-long-term-stress-in-rodents
#13
Sunghee E Park, Dajeong Park, Kang-Il Song, Joon-Kyung Seong, Seok Chung, Inchan Youn
In this study, we tested the hypothesis that chronic stress has cumulative effects over time on heart rate variability (HRV) and physiological responses in a rodent model of chronic mild stress. Rats were exposed to either short-term (2weeks) or long-term (4weeks) stress, followed by a 1-week recovery period. Controls were normally housed rats that did not undergo the stress procedure. For electrocardiogram recordings, transmitters were implanted in all rats 10days before the onset of the experiment to allow recovery from surgery...
December 30, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/28041676/autonomic-function-in-adults-with-allergic-rhinitis-and-its-association-with-disease-severity-and-duration
#14
Min Hee Kim, Eun Ji Choi, Bo-Hyoung Jang, Kyu Seok Kim, Seoung-Gyu Ko, Inhwa Choi
BACKGROUND: The association between allergic rhinitis (AR) and the autonomic nervous system (ANS) has recently received substantial attention. However, no studies have assessed how the heart rate variability (HRV) parameters are associated with duration and disease severity in AR. OBJECTIVE: To compare the difference in autonomic conditions among individuals with AR of various durations and severities and healthy controls. METHODS: We divided individuals with AR into subgroups based on duration and severity of disease...
December 29, 2016: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28031758/somatic-endurance-performance-and-heart-rate-variability-profiles-of-professional-soccer-players-grouped-according-to-age
#15
Michal Botek, Jakub Krejčí, Andrew J McKune, Iva Klimešová
This cross-sectional study compared somatic, endurance performance determinants and heart rate variability (HRV) profiles of professional soccer players divided into different age groups: GI (17-19.9 years; n = 23), GII (20-24.9 years; n = 45), GIII (25-29.9 years; n = 30), and GIV (30-39 years; n = 26). Players underwent somatic and HRV assessment and maximal exercise testing. HRV was analyzed by spectral analysis of HRV, and high (HF) and low (LF) frequency power was transformed by a natural logarithm (Ln)...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28029217/gestational-diabetes-alters-the-fetal-heart-rate-variability-during-an-oral-glucose-tolerance-test-a-fetal-magnetocardiography-study
#16
E Fehlert, K Willmann, L Fritsche, K Linder, H Mat-Husin, F Schleger, M Weiss, I Kiefer-Schmidt, S Brucker, H-U Häring, H Preissl, A Fritsche
OBJECTIVE: Gestational diabetes mellitus (GDM) potentially harms the child before birth. We previously found GDM to be associated with developmental changes in the central nervous system. We now hypothesise that GDM may also impact on the fetal autonomic nervous system under metabolic stress like an oral glucose tolerance test (OGTT). DESIGN: We measured heart rate variability (HRV) of mothers and fetuses during a three-point OGTT using fetal magnetocardiography (fMCG)...
December 28, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28017688/effect-of-position-on-the-residual-heart-rate-variability-in-patients-after-orthotopic-heart-transplantation
#17
Yi-Ying Lin, Wan-An Lu, Yuan-Chen Hsieh, Hsiao-Huang Chang, Chun-Che Shih, Mei-Jy Jeng, Cheng-Deng Kuo
BACKGROUND: This study investigated the effects of position on heart rate variability (HRV) in patients some years after orthotopic heart transplantation (OHT) surgery. METHODS: Spectral HRV analysis was performed on 15 patients after OHT and 16 patients with coronary artery disease (CAD). HRV measures were compared between OHT and CAD patients in four randomly ordered positions [supine, right lateral decubitus (RLD), left lateral decubitus (LLD), and upright]. Multivariable linear regression analysis was used to identify the factors associated with cardiac function and HRV of OHT patients in supine position, and the factors associated with the outcome (OHT or CAD) of the patients...
December 22, 2016: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28010813/changes-in-systolic-arterial-pressure-variability-are-associated-with-the-decreased-aerobic-performance-of-rats-subjected-to-physical-exercise-in-the-heat
#18
Flávia C Müller-Ribeiro, Samuel P Wanner, Weslley H M Santos, Milene R Malheiros-Lima, Ivana A T Fonseca, Cândido C Coimbra, Washington Pires
Enhanced cardiovascular strain is one of the factors that explains degraded aerobic capacity in hot environments. The cardiovascular system is regulated by the autonomic nervous system, whose activity can be indirectly evaluated by analyzing heart rate variability (HRV) and systolic arterial pressure (SAP) variability. However, no study has addressed whether HRV or SAP variability can predict aerobic performance during a single bout of exercise. Therefore, this study aimed to investigate whether there is an association between cardiovascular variability and performance in rats subjected to treadmill running at two ambient temperatures...
January 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28006949/autism-spectrum-disorder-is-associated-with-autonomic-underarousal
#19
I Bujnakova, I Ondrejka, M Mestanik, Z Visnovcova, A Mestanikova, I Hrtanek, D Fleskova, A Calkovska, I Tonhajzerova
Autism spectrum disorder (ASD) is a serious neurodevelopmental disorder, associated with autonomic dysregulation. However, the pathomechanism leading to autonomic abnormalities is still unclear. The aim of this study was to assess autonomic nervous system (ANS) activity during baseline in homogenous group of autistic children using electrodermal activity (EDA), as an index of sympathetic activity and short-term heart rate variability (HRV) reflecting predominantly cardiac vagal control. Fifteen ASD boys and 15 healthy age-matched boys at the age of 7-15 years were examined...
December 22, 2016: Physiological Research
https://www.readbyqxmd.com/read/28003771/heart-rate-variability-during-treatment-of-breakthrough-pain-in-patients-with-advanced-cancer-a-pilot-study
#20
Eva Katharina Masel, Patrick Huber, Tobias Engler, Herbert Hans Watzke
BACKGROUND: Decisions on the intensity of analgesic therapy and judgments regarding its efficacy are difficult at the end of life, when many patients are not fully conscious and pain is a very common symptom. In healthy individuals and in postoperative settings, nociception and subsequent pain relief have been shown to induce changes in the autonomic nervous system (ANS), which can be detected by measuring heart rate variability (HRV). OBJECTIVES: The changes in the ANS were studied by measuring HRV during opioid therapy for cancer breakthrough pain (CBTP) in palliative-care patients with cancer and compared these changes with patient-reported pain levels on a numeric rating scale (NRS)...
2016: Journal of Pain Research
keyword
keyword
95954
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"