keyword
MENU ▼
Read by QxMD icon Read
search

Telemetric

keyword
https://www.readbyqxmd.com/read/29760664/reduced-renal-mass-salt-sensitive-hypertension-is-resistant-to-renal-denervation
#1
Ionut Tudorancea, Thomas E Lohmeier, Barbara T Alexander, Dragos Pieptu, Dragomir N Serban, Radu Iliescu
Aim: Activation of the sympathetic nervous system is common in resistant hypertension (RHT) and also in chronic kidney disease (CKD), a prevalent condition among resistant hypertensives. However, renal nerve ablation lowers blood pressure (BP) only in some patients with RHT. The influence of loss of nephrons per se on the antihypertensive response to renal denervation (RDNx) is unclear and was the focus of this study. Methods: Systemic hemodynamics and sympathetically mediated low frequency oscillations of systolic BP were determined continuously from telemetrically acquired BP recordings in rats before and after surgical excision of ∼80% of renal mass and subsequent RDNx...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29749670/influence-of-water-depth-on-energy-expenditure-during-aquatic-walking-in-people-post-stroke
#2
Hyosok Lim, Daniel Azurdia, Brenda Jeng, Taeyou Jung
BACKGROUND AND PURPOSE: This study aimed to investigate the metabolic cost during aquatic walking at various depths in people post stroke. The secondary purpose was to examine the differences in metabolic cost between aquatic walking and land walking among individuals post stroke. DESIGN: A cross-sectional research design is used. METHODS: Twelve participants post stroke (aged 55.5 ± 13.3 years) completed 6 min of walking in 4 different conditions: chest-depth, waist-depth, and thigh-depth water, and land...
May 11, 2018: Physiotherapy Research International: the Journal for Researchers and Clinicians in Physical Therapy
https://www.readbyqxmd.com/read/29748220/remote-left-ventricular-hemodynamic-monitoring-using-a-novel-intracardiac-sensor
#3
Thomas Mondritzki, Philip Boehme, Jason White, Jin Woo Park, Jessica Hoffmann, Julia Vogel, Peter Kolkhof, Stuart Walsh, Peter Sandner, Erwin Bischoff, Wilfried Dinh, Jörg Hüser, Hubert Truebel
BACKGROUND: Heart failure (HF) remains the most common reason for hospital admission in patients aged >65 years. Despite modern drug therapy, mortality and readmission rates for patients hospitalized with HF remain high. This necessitates further research to identify early patients at risk for readmission to limit hospitalization by timely adjustment of medical therapy. Implantable devices can monitor left ventricular (LV) hemodynamics and remotely and continuously detect the early signs of decompensation to trigger interventions and reduce the risk of hospitalization for HF...
May 2018: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29738675/the-role-of-technology-and-telemetry-medicine-in-the-initial-management-of-a-st-segment-elevated-myocardial-infarction-in-a-rural-emergency-department
#4
Michael L Hood
CONTEXT: The 12-lead electrocardiogram (ECG) is an integral part of the diagnostic tools available for recognising a patient who is experiencing an ST-segment elevated myocardial infarction (STEMI). Consequently, a great emphasis is placed on the rapid acquisition and expert interpretation of the 12-lead ECG so that the appropriate reperfusion management might be commenced to optimise patient outcomes by preventing further damage to the myocardium. With the advancement of telemetric and diagnostic abilities of the modern ECG machine, the role of frontline rural emergency clinicians is as important as ever...
May 2018: Rural and Remote Health
https://www.readbyqxmd.com/read/29727612/electrocorticographic-telemetric-recording-in-unrestrained-mouse-pups
#5
Nicole Chemaly, Astrid Nehlig, Catherine Chiron, Rima Nabbout
BACKGROUND: Early onset epileptic encephalopathies are rare paediatric diseases, with seizures resistant to drugs and impacting development of cognitive and motor functions. Many of them show monogenic aetiology and engineered animal models are crucial to understand the underlying mechanisms and propose treatment trials. These models have mostly been explored in vitro or in vivo under anaesthesia. This may affect the occurrence of epileptic activities and their clinical expression. These study conditions perturb social skills and are limited in time...
May 1, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29648985/feasibility-of-telemetric-intracranial-pressure-monitoring-in-the-neuro-intensive-care-unit
#6
Alexander Lilja-Cyron, Jesper Kelsen, Morten Andresen, Kåre Fugleholm, Marianne Juhler
Intracranial pressure (ICP) monitoring is crucial in the management of acute neurosurgical conditions such as traumatic brain injury (TBI). However, pathological ICP may persist beyond the admission to the neuro intensive care unit (NICU). We investigated the feasibility of telemetric ICP monitoring in the NICU, as this technology provides the possibility of long-term ICP assessment beyond NICU discharge. In this prospective investigation, we implanted telemetric ICP sensors (Raumedic Neurovent-P-tel) instead of conventional, cabled ICP sensors in patients undergoing decompressive craniectomy...
May 3, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29625197/a-single-subconvulsant-dose-of-domoic-acid-at-mid-gestation-does-not-cause-temporal-lobe-epilepsy-in-mice
#7
Fanny Demars, Kristen Clark, Megan S Wyeth, Emily Abrams, Paul S Buckmaster
Harmful blooms of domoic acid (DA)-producing algae are a problem in oceans worldwide. DA is a potent glutamate receptor agonist that can cause status epilepticus and in survivors, temporal lobe epilepsy. In mice, one-time low-dose in utero exposure to DA was reported to cause hippocampal damage and epileptiform activity, leading to the hypothesis that unrecognized exposure to DA from contaminated seafood in pregnant women can damage the fetal hippocampus and initiate temporal lobe epileptogenesis. However, development of epilepsy (i...
April 3, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29615881/age-dependent-hypothalamic-and-pituitary-responses-to-novel-environment-stress-or-lipopolysaccharide-in-rats
#8
Sandy Koenig, Janne Bredehöft, Alexander Perniss, Franziska Fuchs, Joachim Roth, Christoph Rummel
Previously, we have shown that the transcription factor nuclear factor interleukin (NF-IL)6 can be used as an activation marker for inflammatory lipopolysaccharide (LPS)-induced and psychological novel environment stress (NES) in the rat brain. Here, we aimed to investigate age dependent changes of hypothalamic and pituitary responses to NES (cage switch) or LPS (100 μg/kg) in 2 and 24 months old rats. Animals were sacrificed at specific time points, blood and brains withdrawn and analyzed using immunohistochemistry, RT-PCR and bioassays...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29522557/cardiac-electrophysiological-adaptations-in-the-equine-athlete-restitution-analysis-of-electrocardiographic-features
#9
Mengye Li, Karan R Chadda, Gareth D K Matthews, Celia M Marr, Christopher L-H Huang, Kamalan Jeevaratnam
Exercising horses uniquely accommodate 7-8-fold increases in heart rate (HR). The present experiments for the first time analysed the related adaptations in action potential (AP) restitution properties recorded by in vivo telemetric electrocardiography from Thoroughbred horses. The horses were subjected to a period of acceleration from walk to canter. The QRS durations, and QT and TQ intervals yielded AP conduction velocities, AP durations (APDs) and diastolic intervals respectively. From these, indices of active, λ = QT/(QRS duration), and resting, λ0 = TQ/(QRS duration), AP wavelengths were calculated...
2018: PloS One
https://www.readbyqxmd.com/read/29490168/antioxidant-defense-and-protection-against-cardiac-arrhythmias-lessons-from-a-mammalian-hibernator-the-woodchuck
#10
Zhenghang Zhao, Raymond K Kudej, Hairuo Wen, Nadezhda Fefelova, Lin Yan, Dorothy E Vatner, Stephen F Vatner, Lai-Hua Xie
Hibernating animals show resistance to hypothermia-induced cardiac arrhythmias. However, it is not clear whether and how mammalian hibernators are resistant to ischemia-induced arrhythmias. The goal of this investigation was to determine the susceptibility of woodchucks ( Marmota monax) to arrhythmias and their mechanisms after coronary artery occlusion at the same room temperature in both winter, the time for hibernation, and summer, when they do not hibernate. By monitoring telemetric electrocardiograms, we found significantly higher arrhythmia scores, calculated as the severity of arrhythmias, with incidence of ventricular tachycardia, ventricular fibrillation, and thus sudden cardiac death (SCD) in woodchucks in summer than they had in winter...
February 28, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29486268/effects-of-n-3-polyunsaturated-fatty-acid-supplementation-on-cognitive-functions-electrocortical-activity-and-neurogenesis-in-a-non-human-primate-the-grey-mouse-lemur-microcebus-murinus
#11
Julie Royo, Nicolas Villain, Delphine Champeval, Federico Del Gallo, Giuseppe Bertini, Fabienne Aujard, Fabien Pifferi
Among environmental factors that may affect on brain function, some nutrients and particularly n-3 polyunsaturated fatty acids (n-3 PUFA) are required for optimal brain development. Their effects on cognitive functions, however, are still unclear, and studies in humans and rodents have yielded contradictory results. We used a non-human primate model, the grey mouse lemur, phylogenetically close to human. The aim of this study was to demonstrate the impact of n-3 PUFA supplementation on cognitive functions, neuronal activity and neurogenesis...
February 24, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29436510/hidden-markov-models-for-monitoring-circadian-rhythmicity-in-telemetric-activity-data
#12
Qi Huang, Dwayne Cohen, Sandra Komarzynski, Xiao-Mei Li, Pasquale Innominato, Francis Lévi, Bärbel Finkenstädt
Wearable computing devices allow collection of densely sampled real-time information on movement enabling researchers and medical experts to obtain objective and non-obtrusive records of actual activity of a subject in the real world over many days. Our interest here is motivated by the use of activity data for evaluating and monitoring the circadian rhythmicity of subjects for research in chronobiology and chronotherapeutic healthcare. In order to translate the information from such high-volume data arising we propose the use of a Markov modelling approach which (i) naturally captures the notable square wave form observed in activity data along with heterogeneous ultradian variances over the circadian cycle of human activity, (ii) thresholds activity into different states in a probabilistic way while respecting time dependence and (iii) gives rise to circadian rhythm parameter estimates, based on probabilities of transitions between rest and activity, that are interpretable and of interest to circadian research...
February 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29406308/comparison-of-two-telemetric-intestinal-temperature-devices-with-rectal-temperature-during-exercise
#13
C P Bogerd, K B Velt, S Annaheim, C C W G Bongers, T M H Eijsvogels, H A M Daanen
OBJECTIVE: The discomfort caused by rectal probes and esophageal probes for the estimation of body core temperature has triggered the development of gastrointestinal (GI) capsules that are easily accepted by athletes and workers due to their non-invasive characteristics. We compare two new GI capsule devices with rectal temperature during cycle ergometer exercise and rest. APPROACH: Eight participants followed a protocol of (i) 30 min exercise with a power output of 130 W, (ii) 5 min rest, (iii) 10 min self-paced maximum exercise, and (iv) 15 min rest...
March 29, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29396505/genetic-background-dominates-the-susceptibility-to-ventricular-arrhythmias-in-a-murine-model-of-%C3%AE-adrenergic-stimulation
#14
Marisa Jelinek, Charlotte Wallach, Heimo Ehmke, Alexander Peter Schwoerer
In cardiovascular research, several mouse strains with differing genetic backgrounds are used to investigate mechanisms leading to and sustaining ventricular arrhythmias. The genetic background has been shown to affect the studied phenotype in other research fields. Surprisingly little is known about potential strain-specific susceptibilities towards ventricular arrhythmias in vivo. Here, we hypothesized that inter-strain differences reported in the responsiveness of the β-adrenergic pathway, which is relevant for the development of arrhythmias, translate into a strain-specific vulnerability...
February 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29323578/effects-of-black-cohosh-and-estrogen-on-core-body-and-tail-skin-temperatures-in-ovariectomized-rats-by-telemetric-monitoring-with-dual-thermistor-probes
#15
Y Sun, L H Qin, X Chen, X Yan, L Mao, W Bai, J Kang
OBJECTIVES: To investigate the effects of black cohosh and estrogen on the temperature in ovariectomized rats, the core body temperature (CBT) and tail-skin temperature (TST) were simultaneously monitored and the relationship between these two temperatures was explored. METHODS: Twenty-four female Sprague-Dawley rats aged 8 weeks were randomly divided into four groups: sham-operated (SHAM), ovariectomized (OVX), OVX treated with estradiol valerate (OVX + E), and OVX treated with isopropanolic black cohosh extract (OVX + ICR)...
April 2018: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29315578/hcn4-pacemaker-channels-attenuate-the-parasympathetic-response-and-stabilize-the-spontaneous-firing-of-the-sinoatrial-node
#16
Yuko Kozasa, Noriyuki Nakashima, Masayuki Ito, Taisuke Ishikawa, Hiroki Kimoto, Kazuo Ushijima, Naomasa Makita, Makoto Takano
KEY POINTS: The contribution of HCN4 pacemaker channels in the autonomic regulation of the sino-atrial node (SAN) has been a matter of debate. The transgenic overexpression of HCN4 did not induce tachycardia, but reduced heart rate variability, while the conditional knockdown of HCN4 gave rise to sinus arrhythmia. The response of the SAN to β-adrenergic stimulation was not affected by overexpression or knockdown of HCN4 channels. When HCN4 channels were knocked down, the parasympathetic response examined by cervical vagus nerve stimulation (CVNS) was enhanced; the CVNS induced complete sinus pause...
March 1, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29304719/neuroimmunology-of-traumatic-brain-injury-a-longitudinal-study-of-interdependency-of-inflammatory-markers-and-heart-rate-variability-in-severe-traumatic-brain-injury
#17
Akhil Deepika, Bhagavatula Indira Devi, Dhaval Shukla, Talakad N Sathyaprabha, Rita Christopher, Shruthi S Ramesh
The aim of the present study is to evaluate the interdependency between heart rate variability (HRV) and inflammatory markers in patients with severe traumatic brain injury (TBI). A prospective exploratory study was done with a sample size of 89 patients. HRV of these patients was recorded using a telemetric device. The recordings were made on day 1 of the patients' admission into the intensive care unit followed by serial recordings on day 3 and day 10. Serum samples of the patients were also collected on these days for analysis of interleukin (IL)-1β, IL-6, IL-10, and tumor necrosis factor alpha levels using enzyme-linked immunosorbent assay kits...
May 15, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29242602/altered-heart-rate-regulation-by-the-autonomic-nervous-system-in-mice-lacking-natriuretic-peptide-receptor-c-npr-c
#18
Motahareh Moghtadaei, Ellen Langille, Sara A Rafferty, Oleg Bogachev, Robert A Rose
Natriuretic peptides (NPs) play essential roles in the regulation of cardiovascular function. NP effects are mediated by receptors known as NPR-A, NPR-B or NPR-C. NPs have potent effects on regulation of heart rate (HR) by the autonomic nervous system (ANS), but the role of NPR-C in these effects has not been investigated. Accordingly, we have used telemetric ECG recordings in awake, freely moving wildtype and NPR-C knockout (NPR-C-/- ) mice and performed heart rate variability (HRV) analysis to assess alterations in sympatho-vagal balance on the heart following loss of NPR-C...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29238261/physical-physiological-and-perceptual-match-demands-of-amateur-mixed-gender-touch-players
#19
Will Vickery, Alice Harkness
The purpose of this study was to provide a position specific (middle, link [male], link [female], wing) analysis of mixed gender touch on the physical physiological and perceptual demands of amateur players during match-play across a season. Distance and speed measures were obtained through the use of 10-Hz global positioning system devices, whilst telemetric heart rate devices were used determine a range of physiological measures. Players also provided a rating of perceived exertion following each match. The greatest physical demand was associated with the middle playing position by comparison to all others (Distance travelled ≥5...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29214623/core-temperature-responses-of-military-working-dogs-during-training-activities-and-exercise-walks
#20
Catherine O'Brien, Anthony J Karis, William J Tharion, Heather M Sullivan, Reed W Hoyt
Heat strain is common in military working dogs (MWDs), but can be mitigated by limiting duration of activity to avoid overheating and allowing sufficient time for recovery. To determine work/rest times for MWDs, temperature responses during training must be characterized. This study measured body core temperature of 48 MWDs at Lackland Air Force Base, San Antonio, TX. Twenty-four MWDs in training for patrol and detection activities participated under a range of ambient temperatures in August (27°C-32°C), October (22°C-26°C) and March (approximately 13°C)...
October 2017: U.S. Army Medical Department Journal
keyword
keyword
84983
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"