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https://www.readbyqxmd.com/read/28811941/seizure-associated-takotsubo-syndrome-a-rare-combination
#1
Htay Htay Kyi, Nour Aljariri Alhesan, Sunil Upadhaya, Samer Al Hadidi
Takotsubo cardiomyopathy (TC) is increasingly recognized in neurocritical care population especially in postmenopausal females. We are presenting a 61-year-old African American female with past medical history of epilepsy, bipolar disorder, and hypertension who presented with multiple episodes of seizures due to noncompliance with antiepileptic medications. She was on telemetry which showed ST alarm. Electrocardiogram (ECG) was ordered and showed ST elevation in anterolateral leads and troponins were positive...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28808011/behavioral-responses-to-annual-temperature-variation-alter-the-dominant-energy-pathway-growth-and-condition-of-a-cold-water-predator
#2
Matthew M Guzzo, Paul J Blanchfield, Michael D Rennie
There is a pressing need to understand how ecosystems will respond to climate change. To date, no long-term empirical studies have confirmed that fish populations exhibit adaptive foraging behavior in response to temperature variation and the potential implications this has on fitness. Here, we use an unparalleled 11-y acoustic telemetry, stable isotope, and mark-recapture dataset to test if a population of lake trout (Salvelinus namaycush), a cold-water stenotherm, adjusted its use of habitat and energy sources in response to annual variations in lake temperatures during the open-water season and how these changes translated to the growth and condition of individual fish...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28802380/can-telemetry-data-obviate-the-need-for-sleep-studies-in-pierre-robin-sequence
#3
Nicole Leigh Aaronson, Noel Jabbour
OBJECTIVE: This study looks to correlate telemetry data gathered on patients with Pierre Robin Sequence (PRS) with sleep study data. Strong correlation might allow obstructive sleep apnea (OSA) to be reasonably predicted without the need for sleep study. METHODS: Charts from forty-six infants with PRS who presented to our children's hospital between 2005 and 2015 and received a polysomnogram (PSG) prior to surgical intervention were retrospectively reviewed. Correlations and scatterplots were used to compare average daily oxygen nadir, overall oxygen nadir, and average number of daily desaturations from telemetry data with apnea-hypopnea index (AHI) and oxygen nadir on sleep study...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28798258/preserved-right-ventricular-integrity-in-a-new-telemetric-rat-model-of-severe-pulmonary-hypertension
#4
Catharina Schreiber, Magdalena S Eilenberg, Attila Kiss, Helga Bergmeister, Bruno K Podesser, Julia Mascherbauer, Diana Bonderman
Telemetric monitoring of hemodynamic parameters has become an established standard in experimental models of pulmonary arterial hypertension (PAH). To that purpose, a dedicated catheter is usually implanted through the right ventricular wall of study animals. Drawbacks of this standard technique are: obtained pressures are from the right ventricle and therefore only surrogates for pulmonary arterial pressures, and furthermore, right ventricular myocardium is always damaged to a certain degree. To overcome shortcomings of standard hemodynamic assessment, we modified an established rat model, where severe PAH is induced by left-sided pneumonectomy plus monocrotaline injection...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28798200/wearable-physiological-monitoring-for-human-thermal-work-strain-optimization
#5
Mark J Buller, Alexander Pearson Welles, Karl E Friedl
Safe performance limits of soldiers and athletes have typically relied on predictive work-rest models of ambient conditions, average work intensity, and characteristics of the population. Bioengineering advances in noninvasive sensor technologies including miniaturization, reduced cost, power requirements, and comfort now make it possible to produce individual predictions of safe thermal-work limits. These precision medicine assessments depend on the development of thoughtful algorithms based on physics and physiology...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28790450/seasonal-changes-in-energy-expenditure-body-temperature-and-activity-patterns-in-llamas-lama-glama
#6
Alexander Riek, Lea Brinkmann, Matthias Gauly, Jurcevic Perica, Thomas Ruf, Walter Arnold, Catherine Hambly, John R Speakman, Martina Gerken
Mammals typically keep their body temperature (Tb) within a narrow limit with changing environmental conditions. There are indications that some wild ungulates can exhibit certain forms of energy saving mechanisms when ambient temperatures are low and/or food is scarce. Therefore, the aim of the study was to determine if the llama, one of the most extensively kept domestic livestock species, exhibits seasonal adjustment mechanisms in terms of energy expenditure, Tb and locomotion. For that purpose llamas (N = 7) were kept in a temperate habitat on pasture...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28781129/safety-tolerability-and-pharmacokinetics-of-single-doses-of-oxytocin-administered-via-an-inhaled-route-in-healthy-females-randomized-single-blind-phase-1-study
#7
Disala Fernando, Sarah Siederer, Sunita Singh, Ian Schneider, Ashutosh Gupta, Marcy Powell, Duncan Richards, Michelle P McIntosh, Peter Lambert, Susan Fowles
BACKGROUND: The utility of intramuscular (IM) oxytocin for the prevention of postpartum hemorrhage in resource-poor settings is limited by the requirement for temperature-controlled storage and skilled staff to administer the injection. We evaluated the safety, tolerability and pharmacokinetics (PK) of a heat-stable, inhaled (IH) oxytocin formulation. METHODS: This phase 1, randomized, single-center, single-blind, dose-escalation, fixed-sequence study (NCT02542813) was conducted in healthy, premenopausal, non-pregnant, non-lactating women aged 18-45years...
August 2017: EBioMedicine
https://www.readbyqxmd.com/read/28770066/a-framework-for-testing-assumptions-about-foraging-scales-body-mass-and-niche-separation-using-telemetry-data
#8
Graeme S Cumming, Dominic A W Henry, Chevonne Reynolds
Ecological theory predicts that if animals with very similar dietary requirements inhabit the same landscape, then they should avoid niche overlap by either exploiting food resources at different times or foraging at different spatial scales. Similarly, it is often assumed that animals that fall in different body mass modes and share the same body plan will use landscapes at different spatial scales. We developed a new methodological framework for understanding the scaling of foraging (i.e. the range and distribution of scales at which animals use their landscapes) by applying a combination of three well-established methods to satellite telemetry data to quantify foraging patch size distributions: (1) first-passage time analysis; (2) a movement-based kernel density estimator; and (3) statistical comparison of resulting histograms and tests for multimodality...
July 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28768885/satellite-telemetry-reveals-higher-fishing-mortality-rates-than-previously-estimated-suggesting-overfishing-of-an-apex-marine-predator
#9
Michael E Byrne, Enric Cortés, Jeremy J Vaudo, Guy C McN Harvey, Mark Sampson, Bradley M Wetherbee, Mahmood Shivji
Overfishing is a primary cause of population declines for many shark species of conservation concern. However, means of obtaining information on fishery interactions and mortality, necessary for the development of successful conservation strategies, are often fisheries-dependent and of questionable quality for many species of commercially exploited pelagic sharks. We used satellite telemetry as a fisheries-independent tool to document fisheries interactions, and quantify fishing mortality of the highly migratory shortfin mako shark (Isurus oxyrinchus) in the western North Atlantic Ocean...
August 16, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28767655/beluga-whale-summer-habitat-associations-in-the-nelson-river-estuary-western-hudson-bay-canada
#10
Alexander J Smith, Jeff W Higdon, Pierre Richard, Jack Orr, Warren Bernhardt, Steven H Ferguson
To understand beluga whale (Delphinapterus leucas) estuarine use in the Nelson River estuary, southwest Hudson Bay, we recorded and examined beluga movements and habitat associations for the July through August period in 2002-2005. We compared locations of belugas fitted with satellite transmitters ("tags") (2002-2005) and aerial-surveyed (2003 and 2005) belugas for years of differing freshwater flow from the Nelson River which is influenced by hydroelectric activity. Using the beluga telemetry location data, we estimated an early August behavioral shift in beluga distribution patterns from local estuarine use to a progressively more migratory behavior away from the estuary...
2017: PloS One
https://www.readbyqxmd.com/read/28767090/a-magnetic-balanced-inductive-link-for-the-simultaneous-uplink-data-and-power-telemetry
#11
Chen Gong, Dake Liu, Zhidong Miao, Min Li
When using the conventional two-coil inductive link for the simultaneous wireless power and data transmissions in implantable biomedical sensor devices, the strong power carrier could overwhelm the uplink data signal and even saturate the external uplink receiver. To address this problem, we propose a new magnetic-balanced inductive link for our implantable glaucoma treatment device. In this inductive link, an extra coil is specially added for the uplink receiving. The strong power carrier interference is minimized to approach zero by balanced canceling of the magnetic field of the external power coil...
August 2, 2017: Sensors
https://www.readbyqxmd.com/read/28765031/shifts-in-the-light-dark-cycle-increase-unpredictability-of-the-cardiovascular-system
#12
Lubos Molcan, Michal Zeman
Physiological variables such as heart rate (HR) and blood pressure (BP) exhibit long-term circadian rhythms, which can be disturbed by shift work. On the other hand, short-term oscillations in HR and BP have a high prognostic value. Therefore, we aimed to determine if the short-term variability, complexity and entropy of HR and BP would be affected by a regular light/dark (LD) cycle and phase delay shifts of the LD cycle, leading to chronodisruption. Telemetry-monitored rats were exposed first to the regular LD cycle and then to shifts in LD for 8weeks...
September 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28764511/a-small-spacecraft-for-multipoint-measurement-of-ionospheric-plasma
#13
T M Roberts, K A Lynch, R E Clayton, J Weiss, D L Hampton
Measurement of ionospheric plasma is often performed by a single in situ device or remotely using cameras and radar. This article describes a small, low-resource, deployed spacecraft used as part of a local, multipoint measurement network. A B-field aligned sounding rocket ejects four of these spin-stabilized spacecraft in a cross pattern. In this application, each spacecraft carries two retarding potential analyzers which are used to determine plasma density, flow, and ion temperature. An inertial measurement unit and a light-emitting diode array are used to determine the position and orientation of the devices after deployment...
July 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28751842/anmco-aiic-sit-consensus-information-document-definition-precision-and-suitability-of-electrocardiographic-signals-of-electrocardiographs-ergometry-holter-electrocardiogram-telemetry-and-bedside-monitoring-systems
#14
Michele Massimo Gulizia, Giancarlo Casolo, Guerrino Zuin, Loredana Morichelli, Giovanni Calcagnini, Vincenzo Ventimiglia, Federica Censi, Pasquale Caldarola, Giancarmine Russo, Lorenzo Leogrande, Gian Franco Gensini
The electrocardiogram (ECG) signal can be derived from different sources. These include systems for surface ECG, Holter monitoring, ergometric stress tests, and telemetry systems and bedside monitoring of vital parameters, which are useful for rhythm and ST-segment analysis and ECG screening of electrical sudden cardiac death predictors. A precise ECG diagnosis is based upon correct recording, elaboration, and presentation of the signal. Several sources of artefacts and potential external causes may influence the quality of the original ECG waveforms...
May 2017: European Heart Journal Supplements: Journal of the European Society of Cardiology
https://www.readbyqxmd.com/read/28742613/the-influence-of-heavier-football-helmet-faceguards-on-head-impact-location-and-severity
#15
Julianne D Schmidt, Tracy T Phan, Ron W Courson, Fred Reifsteck, Eric D Merritt, Cathleen N Brown
OBJECTIVE: To determine whether players with heavier faceguards have increased odds of sustaining top of the head impacts and head impacts of higher severity. DESIGN: Cohort study. SETTING: On-field. PARTICIPANTS: Thirty-five division I collegiate football players. INTERVENTIONS: Faceguard mass was measured. Head impact location and severity (linear acceleration [gravity], rotational acceleration [radian per square second], and Head Impact Technology severity profile [unitless]) were captured for 19 379 total head impacts at practices using the Head Impact Telemetry System...
July 21, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28734853/the-impact-of-mk-467-on-sedation-heart-rate-and-arterial-blood-pressure-after-intramuscular-coadministration-with-dexmedetomidine-in-conscious-cats
#16
Juhana Honkavaara, Bruno Pypendop, Jan Ilkiw
OBJECTIVE: To study the effects of MK-467, a peripheral α2-adrenoceptor antagonist, on sedation, heart rate and blood pressure after intramuscular (IM) coadministration with 25 μg kg(-1) of dexmedetomidine in cats. STUDY DESIGN: Prospective, randomized, controlled, blinded, cross-over, experimental study. ANIMALS: A total of eight healthy, adult, neutered male cats. METHODS: Cats were administered five IM treatments at least 2 weeks apart, consisting of dexmedetomidine 25 μg kg(-1) (D25), MK-467 600 μg kg(-1) (M600) and D25 combined with 300, 600 and 1200 μg kg(-1) of MK-467 (D25M300, D25M600 and D25M1200, respectively)...
March 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28727640/no-seasonal-changes-in-cognitive-functioning-among-high-school-football-athletes-implementation-of-a-novel-electrophysiological-measure-and-standard-clinical-measures
#17
Steven P Broglio, Richelle Williams, Ashley Rettmann, Brandon Moore, James T Eckner, Sean Meehan
OBJECTIVE: To evaluate neuroelectric and cognitive function relative to a season of football participation. Cognitive and neuroelectric function declines are hypothesized to be present in football athletes. DESIGN: Observational. SETTING: Athletic fields and research laboratory. PATIENTS (OR PARTICIPANTS): Seventy-seven high school athletes (15.9 + 0.9 years, 178.6 + 7.2 cm, 74.4 + 14.7 kg, and 0.8 + 0.8 self-reported concussions) participating in football (n = 46) and noncontact sports (n = 31)...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28727138/partial-diel-migration-a-facultative-migration-underpinned-by-long-term-inter-individual-variation
#18
Philip M Harrison, Lee F G Gutowsky, Eduardo G Martins, David A Patterson, Steven J Cooke, Michael Power
The variations in migration that comprise partial diel migrations, putatively occur entirely as a consequence of behavioural flexibility. However, seasonal partial migrations are increasingly recognised to be mediated by a combination of reversible plasticity in response to environmental variation and individual variation due to genetic and environmental effects. Here, we test the hypothesis that while partial diel migration heterogeneity occurs primarily due to short-term within-individual flexibility in behaviour, long-term individual differences in migratory behaviour also underpin this migration variation...
September 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28725418/development-of-an-automated-method-of-detecting-stereotyped-feeding-events-in-multisensor-data-from-tagged-rorqual-whales
#19
Ann N Allen, Jeremy A Goldbogen, Ari S Friedlaender, John Calambokidis
The introduction of animal-borne, multisensor tags has opened up many opportunities for ecological research, making previously inaccessible species and behaviors observable. The advancement of tag technology and the increasingly widespread use of bio-logging tags are leading to large volumes of sometimes extremely detailed data. With the increasing quantity and duration of tag deployments, a set of tools needs to be developed to aid in facilitating and standardizing the analysis of movement sensor data. Here, we developed an observation-based decision tree method to detect feeding events in data from multisensor movement tags attached to fin whales (Balaenoptera physalus)...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28724487/effect-of-wearing-a-telemetry-jacket-on-behavioral-and-physiologic-parameters-of-dogs-in-the-open-field-test
#20
Richard E Fish, Melanie L Foster, Margaret E Gruen, Barbara L Sherman, Davidc C Dorman
Safety pharmacology studies in dogs often integrate behavioral assessments made using video recording with physiologic measurements collected by telemetry. However, whether merely wearing the telemetry vest affects canine behavior and other parameters has not been evaluated. This pilot study assessed the effect of a telemetry vest on behavioral and physiologic responses to an environmental stressor, the sounds of a thunderstorm, in Labrador retrievers. Dogs were assigned to one of 2 experimental groups (Vest and No-Vest, n = 8 dogs per group) by using a matched pairs design, with a previously determined, sound-associated anxiety score as the blocking variable...
July 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
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