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https://www.readbyqxmd.com/read/29155767/a-wireless-bidirectional-interface-for-in-vivo-recording-and-stimulation-of-neural-activity-in-freely-behaving-rats
#1
Liana Melo-Thomas, K-Alexander Engelhardt, Uwe Thomas, Dirk Hoehl, Sascha Thomas, Markus Wöhr, Bjoern Werner, Frank Bremmer, Rainer K W Schwarting
In vivo electrophysiology is a powerful technique to investigate the relationship between brain activity and behavior at a millisecond and micrometer scale. However, current methods mostly rely on tethered cable recordings or only use unidirectional systems, allowing either recording or stimulation of neural activity, but not at the same time or same target. Here, a new wireless, bidirectional device for simultaneous multichannel recording and stimulation of neural activity in freely behaving rats is described...
November 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29147786/risk-factors-for-development-of-ectopic-atrial-tachycardia-in-post-operative-congenital-heart-disease
#2
Bradley C Clark, John T Berger, Charles I Berul, Richard A Jonas, Jonathan R Kaltman, Julianne Lapsa, Dilip S Nath, Elizabeth D Sherwin, Pranava Sinha, David Zurakowski, Jeffrey P Moak
Ectopic atrial tachycardia (EAT) is common in surgically repaired congenital heart disease (CHD) and carries the potential for significant hemodynamic compromise. Our objective was to determine the incidence, and risk factors of EAT after CHD surgery. Prospective study of patients that underwent surgery for CHD from February to October 2016 was performed. Demographic, perioperative and electrophysiologic data were collected. Sustained EAT (> 30 s) was documented by telemetry or electrocardiogram and confirmed by a pediatric electrophysiologist...
November 17, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29138511/intrinsic-and-extrinsic-factors-drive-ontogeny-of-early-life-at-sea-behaviour-in-a-marine-top-predator
#3
Matt I D Carter, Deborah J F Russell, Clare B Embling, Clint J Blight, David Thompson, Philip J Hosegood, Kimberley A Bennett
Young animals must learn to forage effectively to survive the transition from parental provisioning to independent feeding. Rapid development of successful foraging strategies is particularly important for capital breeders that do not receive parental guidance after weaning. The intrinsic and extrinsic drivers of variation in ontogeny of foraging are poorly understood for many species. Grey seals (Halichoerus grypus) are typical capital breeders; pups are abandoned on the natal site after a brief suckling phase, and must develop foraging skills without external input...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29131858/the-composition-and-initial-evaluation-of-a-grimace-scale-in-ferrets-after-surgical-implantation-of-a-telemetry-probe
#4
Marsinah L Reijgwart, Nico J Schoemaker, Riccardo Pascuzzo, Matthew C Leach, Melanie Stodel, Loes de Nies, Coenraad F M Hendriksen, Miriam van der Meer, Claudia M Vinke, Yvonne R A van Zeeland
Reliable recognition of pain is difficult in ferrets as many currently available parameters are non-specific, inconsistent and/or impractical. Grimace scales have successfully been applied to assess pain in different animal species and might also be applicable to ferrets. To compose a Ferret Grimace Scale (FGS), we studied the facial musculature of ferrets and compared lateral photographs of 19 ferret faces at six time points before and after intraperitoneal telemetry probe implantation. We identified the Action Units (AUs) orbital tightening, nose bulging, cheek bulging, ear changes and whisker retraction as potential indicators of pain in ferrets...
2017: PloS One
https://www.readbyqxmd.com/read/29131282/prognostic-value-of-daytime-heart-rate-blood-pressure-their-products-and-quotients-in-chronic-heart-failure
#5
Anna Kowalczys, Michał Bohdan, Marcin Gruchała
BACKGROUND: Chronic heart failure (CHF) is an important epidemiological and therapeuthic issue with poor prognosis. The aim of the study was to estimate the prognostic value of daytime heart rate (HR), blood pressure (BP), their products and quotients in patients with CHF. METHODS: The study included 80 stable patients with CHF and reduced left ventricular ejection fraction (LVEF ≤ 35%). Physical examination, laboratory blood tests, electrocardiogram, chest X-ray, echocardiography, 6-minute walk test (6MWT), telemetry monitoring and BP measurements were performed in all participants...
November 13, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/29128294/behavioral-depression-is-associated-with-increased-vagally-mediated-heart-rate-variability-in-adult-female-cynomolgus-monkeys-macaca-fascicularis
#6
Marc N Jarczok, Julian Koenig, Carol A Shively, Julian F Thayer
INTRODUCTION: Depressive symptoms (DS) in humans are associated with decreased resting state vagal activity, but sex seems to moderate this association. Recently, in human females DS have been associated with greater or similar cardiac vagal activity compared to men in both, clinical and non-clinical samples. A previously validated animal model of behavioral depression was used in the present study to investigate the association of DS and cardiac vagal activity in non-human primates. METHODS: The root mean square of successive differences between adjacent heart beats (RMSSD) was used as an indicator of vagally-mediated heart rate variability in 24h heart rate recordings collected via telemetry in 42 adult female cynomolgus monkeys (Macaca fascicularis)...
November 8, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29120953/improving-quality-on-the-telemetry-unit-back-to-basics
#7
Joselyn White, Heather Brown, Lisa Fry
No abstract text is available yet for this article.
November 8, 2017: Journal of Nursing Care Quality
https://www.readbyqxmd.com/read/29117994/role-of-adenosine-1a-receptor-signaling-on-gfr-early-after-the-induction-of-sepsis
#8
Jonathan M Street, Erik H Koritzinsky, Tiffany R Bellomo, Xuzhen Hu, Peter S T Yuen, Robert A Star
Sepsis and acute kidney injury (AKI) synergistically increase morbidity and mortality in the ICU. How sepsis reduces GFR and causes AKI is poorly understood; one proposed mechanism includes tubuloglomerular feedback (TGF). When sodium reabsorption by the proximal tubules is reduced in normal animals, the macula densa senses increased luminal sodium chloride, then adenosine 1a receptor (A1aR) signaling triggers tubuloglomerular feedback, reducing GFR through afferent arteriole vasoconstriction. We measured GFR and systemic hemodynamics early during cecal ligation and puncture-induced sepsis in wild-type and A1aR knockout mice...
November 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29109379/development-of-a-shipboard-remote-control-and-telemetry-experimental-system-for-large-scale-model-s-motions-and-loads-measurement-in-realistic-sea-waves
#9
Jialong Jiao, Huilong Ren, Christiaan Adika Adenya, Chaohe Chen
Wave-induced motion and load responses are important criteria for ship performance evaluation. Physical experiments have long been an indispensable tool in the predictions of ship's navigation state, speed, motions, accelerations, sectional loads and wave impact pressure. Currently, majority of the experiments are conducted in laboratory tank environment, where the wave environments are different from the realistic sea waves. In this paper, a laboratory tank testing system for ship motions and loads measurement is reviewed and reported first...
October 29, 2017: Sensors
https://www.readbyqxmd.com/read/29107532/palliative-care-communication-in-the-icu-implications-for-an-oncology-critical-care-nursing-partnership
#10
REVIEW
Deborah A Boyle, Susan Barbour, Wendy Anderson, Janice Noort, Michelle Grywalski, Jeannette Myer, Heather Hermann
OBJECTIVES: To describe the development, launch, implementation, and outcomes of a unique multisite collaborative (ie, IMPACT-ICU [Integrating Multidisciplinary Palliative Care into the ICU]) to teach ICU nurses communication skills specific to palliative care. To identify options for collaboration between oncology and critical care nurses when integrating palliation into nursing care planning. DATA SOURCES: Published literature and collective experiences of the authors in the provision of onco-critical-palliative care...
October 26, 2017: Seminars in Oncology Nursing
https://www.readbyqxmd.com/read/29106852/postoperative-objective-detecting-techniques-for-cochlear-implant-children-with-inner-ear-malformation
#11
Xiao-Feng Qiao, Xin Li, Qiang-Wei Zhang, Tong-Li Li, Dong Wang
OBJECTIVES: This study aims to investigate the changing characteristics and rules of electrically-evoked auditory brainstem response (EABR), electrically-evoked stapedius reflex threshold (ESRT) and neural response telemetry (NRT) after cochlear implant in children with inner ear malformation, and guide postoperative equipment debug. METHODS: A total of 88 children with either normal cochlea (control group) or inner ear malformation (test group) received Australian 24 multi-channel cochlear implants...
November 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29105057/potentially-high-risk-cardiac-arrhythmias-with-focal-to-bilateral-tonic-clonic-seizures-and-generalized-tonic-clonic-seizures-are-associated-with-the-duration-of-periictal-hypoxemia
#12
Katherine J Park, Gaurav Sharma, Jeffrey D Kennedy, Masud Seyal
OBJECTIVE: To investigate potentially high-risk cardiac arrhythmias (PHAs) following focal to bilateral tonic-clonic seizures (FBTCSs) and generalized tonic-clonic seizures (GTCSs) and to study the association of PHAs with seizure characteristics and the severity of associated ictal respiratory dysfunction. METHODS: Electrocardiographic (EKG) and pulse oximetry (SpO2 ) data were recorded concurrently with video-electroencephalographic telemetry in the epilepsy monitoring unit (EMU)...
November 3, 2017: Epilepsia
https://www.readbyqxmd.com/read/29101166/transcription-factor-%C3%AE-fosb-acts-within-the-nucleus-of-the-solitary-tract-to-increase-mean-arterial-pressure-during-exposures-to-intermittent-hypoxia
#13
Qiong Wu, J Thomas Cunningham, Steve W Mifflin
ΔFosB is a member of the AP-1 family of transcription factors. ΔFosB has low constitutive expression in the central nervous system and is induced following exposure of rodents to intermittent hypoxia (IH), a model of the arterial hypoxemia that accompanies sleep apnea. We hypothesize ΔFosB in the nucleus of solitary tract (NTS) contributes to increased mean arterial pressure (MAP) during IH. The NTS of 11 male Sprague Dawley rats was injected (3 sites, 100nl per site) with a dominant-negative against ΔFosB (ΔJunD) in an adeno-associated viral vector (AAV)-green fluorescent protein (GFP) reporter...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29096163/safety-at-the-william-quarrier-scottish-epilepsy-centre
#14
James Anderson, Victoria Grant, Mariam Elgammal, Alison Campbell, Julia Hampshire, Stig Hansen, Aline J C Russell
PURPOSE: We examined the yield from EMFIT bed alarms and staff response time to generalised seizure in a medium term residential assessment unit for epilepsy. METHODS: The Scottish Epilpesy Centre (SEC) has a Video Observation System (VOS) that provides continuous recording of all patient spaces (external and internal) and allows retention of clinically relevant events. A retrospective audit of daily EMFIT test records, nursing seizure record sheets (seizure type and EMFIT alert status), clinical incident reporting systems and the VOS database of retained clinical events was conducted for an 9 month period from April 1st 2016 till December 31st 2016...
October 16, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29093218/body-condition-explains-migratory-performance-of-a-long-distance-migrant
#15
Sjoerd Duijns, Lawrence J Niles, Amanda Dey, Yves Aubry, Christian Friis, Stephanie Koch, Alexandra M Anderson, Paul A Smith
Body condition (i.e. relative mass after correcting for structural size) affects the behaviour of migrating birds, but how body condition affects migratory performance, timing and fitness is still largely unknown. Here, we studied the effects of relative body condition on individual departure decisions, wind selectivity, flight speed and timing of migration for a long-distance migratory shorebird, the red knot Calidris canutus rufa. By using automated VHF telemetry on a continental scale, we studied knots' migratory movements with unprecedented temporal resolution over a 3-year period...
November 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29091465/validity-of-the-online-athlete-management-system-to-assess-training-load
#16
Miranda J Menaspà, Paolo Menaspà, Sally A Clark, Maurizio Fanchini
PURPOSE: The aim of this study was to validate the quantification of training load (s-RPE) in an Australian Olympic squad (women's water polo), assessed with the use of a modified RPE scale collected via a newly developed online system (Athlete Management System, AMS). METHODS: Sixteen elite women water polo players (age 26 ± 3 y, height 1.78 ± 0.05 m, body mass 75.5 ± 7.1 kg) participated in the study. Thirty training sessions were monitored, for a total of 303 individual sessions...
November 1, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29082425/review-of-use-and-integration-of-mobile-apps-into-psychiatric-treatments
#17
REVIEW
Steven Chan, Haley Godwin, Alvaro Gonzalez, Peter M Yellowlees, Donald M Hilty
PURPOSE OF REVIEW: Mental health practitioners should understand the features of current, publicly available apps; the features of novel, research apps; and issues behind the integration of mobile apps and digital health services into clinical workflows. RECENT FINDINGS: The review is based on a research literature and the authors' clinical and healthcare administration experiences. Articles searched-on telepsychiatry, telemental health, mobile mental health, informatics, cellular phone, ambulatory monitoring, telemetry, and algorithms-were restricted to 2016 and 2017...
October 30, 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/29075844/changes-in-thermoregulation-and-monoamine-release-in-freely-moving-rats-during-cold-exposure-and-inhibition-of-the-ventromedial-dorsomedial-or-posterior-hypothalamus
#18
Takayuki Ishiwata, Benjamin N Greenwood
The hypothalamus is critical for regulating thermogenesis, but the role of monoamines in specific hypothalamic subregions in thermogenesis is not thoroughly established. The purpose of this study was to confirm changes of body temperature (T b) and thermoregulatory parameters upon inhibition of neural activity in hypothalamic subregions in freely moving rats. In addition, the pattern of monoamine release in these nuclei was measured during active thermoregulation using microdialysis. Tetrodotoxin (TTX) was perfused into the ventromedial hypothalamus (VMH), dorsomedial hypothalamus (DMH), or posterior hypothalamus (PH) at two different ambient temperatures (5 or 23 °C)...
October 26, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/29068499/changes-in-paced-signals-may-predict-in-hospital-cardiac-arrest
#19
Mina Attin, Spencer Rosero, Jimmy Ding, Scot Nolan, Rebecca Tucker
BACKGROUND: An increasing number of patients with chronic illnesses have implanted cardiac rhythm devices such as pacemakers and implantable cardioverter-defibrillators (ICD). This study was conducted to identify potentially useful predictors of in-hospital cardiac arrest (I-HCA) within paced electrocardiogram (ECG) signals from cardiovascular patients with implanted medical devices. METHODS: In this retrospective study of 17 subjects, full-disclosure ECG traces prior to the time of documented I-HCA were analyzed to determine R-R intervals and QRS durations (QRSd)...
October 25, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29061685/neuromuscular-mechanisms-of-an-elaborate-wing-display-in-the-golden-collared-manakin-manacus-vitellinus
#20
Matthew J Fuxjager, Leonida Fusani, Franz Goller, Lisa Trost, Andries Ter Maat, Manfred Gahr, Ioana Chiver, R Miller Ligon, Jennifer Chew, Barney A Schlinger
Many species perform elaborate physical displays to court mates and compete with rivals, but the biomechanical mechanisms underlying such behavior are poorly understood. Here we address this issue by studying the neuromuscular origins of display behavior in a small tropical passerine bird called the golden-collared manakin (Manacus vitellinus). Males of this species court females by dancing around the forest floor and rapidly snapping their wings together above their back. Using radio-telemetry, we collected electromyographic (EMG) recordings from the three main muscles that control avian forelimb movement, and found how these different muscles are activated to generate various aspects of display behavior...
October 23, 2017: Journal of Experimental Biology
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