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https://www.readbyqxmd.com/read/28328722/concurrent-validity-of-the-armour39-heart-rate-monitor-strap-erratum
#1
(no author information available yet)
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April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28327191/real-time-in-vivo-monitoring-of-magnetic-nanoparticles-in-the-bloodstream-by-ac-biosusceptometry
#2
André G Próspero, Caio C Quini, Andris F Bakuzis, Patrícia Fidelis-de-Oliveira, Gustavo M Moretto, Fábio P F Mello, Marcos F F Calabresi, Ronaldo V R Matos, Ednaldo A Zandoná, Nícholas Zufelato, Ricardo B Oliveira, José R A Miranda
BACKGROUND: We introduce and demonstrate that the AC biosusceptometry (ACB) technique enables real-time monitoring of magnetic nanoparticles (MNPs) in the bloodstream. We present an ACB system as a simple, portable, versatile, non-invasive, and accessible tool to study pharmacokinetic parameters of MNPs, such as circulation time, in real time. We synthesized and monitored manganese doped iron oxide nanoparticles in the bloodstream of Wistar rats using two different injection protocols...
March 21, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28325558/l-citrulline-ameliorates-cerebral-blood-flow-during-cortical-spreading-depression-in-rats-involvement-of-nitric-oxide-and-prostanoids-mediated-pathway
#3
Yuki Kurauchi, Koichi Mokudai, Asami Mori, Kenji Sakamoto, Tsutomu Nakahara, Masahiko Morita, Ayako Kamimura, Kunio Ishii
l-Citrulline is a potent precursor of l-arginine, and exerts beneficial effect on cardiovascular system via nitric oxide (NO) production. Migraine is one of the most popular neurovascular disorder, and imbalance of cerebral blood flow (CBF) observed in cortical spreading depression (CSD) contributes to the mechanism of migraine aura. Here, we investigated the effect of l-citrulline on cardiovascular changes to KCl-induced CSD. in rats. Intravenous injection of l-citrulline prevented the decrease in CBF, monitored by laser Doppler flowmetry, without affecting mean arterial pressure and heart rate during CSD...
February 17, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28325023/an-affordable-cuff-less-blood-pressure-estimation-solution
#4
Monika Jain, Niranjan Kumar, Sujay Deb
This paper presents a cuff-less hypertension pre-screening device that non-invasively monitors the Blood Pressure (BP) and Heart Rate (HR) continuously. The proposed device simultaneously records two clinically significant and highly correlated biomedical signals, viz., Electrocardiogram (ECG) and Photoplethysmogram (PPG). The device provides a common data acquisition platform that can interface with PC/laptop, Smart phone/tablet and Raspberry-pi etc. The hardware stores and processes the recorded ECG and PPG in order to extract the real-time BP and HR using kernel regression approach...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323584/evidence-for-gz-adaptation-observed-with-wearable-biosensors-during-high-performance-jet-flight
#5
G Merrill Rice, Dallas Snider, Jeffrey L Moore, J Timothy Lavan, Rich Folga, Thomas B VanBrunt
INTRODUCTION: Few studies have evaluated physiological responses to high acceleration forces during actual flight and to our knowledge no normative data has been acquired by technologies such as wearable biosensors during high performance jet aircraft operations. METHODS: In-flight physiological data from an FDA cleared portable triaxial accelerometer and bio-sensor were observed from five active duty F-18 pilots of the Naval Flight Demonstration Squadron (Blue Angels)...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28323361/heart-rate-variability-parameters-in-horses-distinguish-atrial-fibrillation-from-sinus-rhythm-before-and-after-successful-electrical-cardioversion
#6
B Broux, D De Clercq, A Decloedt, S Ven, L Vera, G van Steenkiste, K Mitchell, C Schwarzwald, G van Loon
BACKGROUND: Atrial fibrillation (AF) is the most common pathological arrhythmia in horses. After successful treatment, recurrence is common. Heart rate monitors are easily applicable in horses and some devices offer basic heart rate variability (HRV) calculations. If HRV can be used to distinguish between AF and sinus rhythm (SR), this could become a monitoring tool for horses at risk for recurrence of AF. OBJECTIVES: The purpose of this study was to assess whether in horses AF (before cardioversion) and SR (after cardioversion) can be differentiated based upon HRV parameters...
March 21, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28321913/heart-rate-variability-can-be-used-to-evaluate-wellbeing-in-preterm-infants
#7
K Kaar, J Brandner, B Minnich, J Hilberath, C Weisser, M Wald
Preterm infants are exposed to various potentially stressful procedures during intensive care, which have been shown to compromise development. We explored the potential stress caused by echocardiograph and the correlation between the duration of the investigation and the amplitude of the alteration. The usefulness of the Newborn Infant Parasympathetic Evaluation (NIPE) monitor (Mdoloris Medical Systems, Loos, France) for assessing acute distress during daily routines, based on heart rate variability, was also investigated...
March 21, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28321519/cardiac-autonomic-function-in-type-1-and-type-2-myotonic-dystrophy
#8
Piotr Bienias, Anna Łusakowska, Michał Ciurzyński, Zuzanna Rymarczyk, Katarzyna Irzyk, Michał Konwerski, Kamil Ciąpała, Paweł Kowalski, Anna Kamińska, Piotr Pruszczyk
OBJECTIVE: The aim of this study was to evaluate cardiac autonomic nervous system function using Holter-derived and standard electrocardiographic parameters in patients with myotonic dystrophy (dystrophia myotonica, DM) and no clinically overt heart involvement. METHODS: Eighty-four DM patients without conditions potentially influencing cardiac autonomic function were enrolled in the study: 44 with DM type 1 and 40 with DM type 2 (mean age 34.9 ± 11.5 and 47...
March 20, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28318889/non-invasive-liver-ablation-using-histotripsy-preclinical-safety-study-in-an-in%C3%A2-vivo-porcine-model
#9
Eli Vlaisavljevich, Gabe Owens, Jonathan Lundt, Dejan Teofilovic, Kimberly Ives, Alexander Duryea, Jim Bertolina, Theodore H Welling, Zhen Xu
This study investigates the safety profile for use of histotripsy, a non-invasive ultrasonic ablation method currently being developed for the treatment of liver cancer, for liver ablation in an in vivo porcine model. Histotripsy treatments were applied to the liver and hepatic veins of 22 porcine subjects, with half of the subjects receiving systemic heparinization. Vital signs (heart rate, blood pressure, temperature, electrocardiogram and SpO2) were monitored throughout the procedure and for 1 h post-treatment...
March 16, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28315609/the-levonorgestrel-releasing-intrauterine-device-potentiates-stress-reactivity
#10
Jurate Aleknaviciute, Joke H M Tulen, Yolanda B De Rijke, Christian G Bouwkamp, Mark van der Kroeg, Mirjam Timmermans, Vincent L Wester, Veerle Bergink, Witte J G Hoogendijk, Henning Tiemeier, Elisabeth F C van Rossum, Cornelis G Kooiman, Steven A Kushner
BACKGROUND: The levonorgestrel-releasing intrauterine device (LNG-IUD) is currently recommended as a first-line contraceptive with an exclusively local intrauterine influence. However, recent clinical trials have identified side effects of LNG-IUD that appear to be systemically mediated, including depressed mood and emotional lability. METHODS: We performed two experimental studies and a cross-sectional study. For each study, women were included from three groups: LNG-IUD (0...
February 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28306672/radiotherapy-chemotherapy-and-atherosclerosis
#11
San S Min, Anthony S Wierzbicki
PURPOSE OF REVIEW: This article reviews the effects of radiotherapy and chemotherapy in promoting the progression of atherosclerosis in patients with cancer. RECENT FINDINGS: Radiotherapy is associated with an increase in the incidence of atherosclerosis with the effects being related to the site of irradiation and dose of radiotherapy. Cranial irradiation is associated with dyslipidaemia and the metabolic syndrome secondary to effect on growth hormone secretion...
March 16, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28306196/flexible-sensing-electronics-for-wearable-attachable-health-monitoring
#12
REVIEW
Xuewen Wang, Zheng Liu, Ting Zhang
Wearable or attachable health monitoring smart systems are considered to be the next generation of personal portable devices for remote medicine practices. Smart flexible sensing electronics are components crucial in endowing health monitoring systems with the capability of real-time tracking of physiological signals. These signals are closely associated with body conditions, such as heart rate, wrist pulse, body temperature, blood/intraocular pressure and blood/sweat bio-information. Monitoring such physiological signals provides a convenient and non-invasive way for disease diagnoses and health assessments...
March 17, 2017: Small
https://www.readbyqxmd.com/read/28303944/relationships-between-strength-and-endurance-parameters-and-air-depletion-rates-in-professional-firefighters
#13
Stephanie Windisch, Wolfgang Seiberl, Ansgar Schwirtz, Daniel Hahn
The aim of this study was to quantify the physical demands of a simulated firefighting circuit and to establish the relationship between job performance and endurance and strength fitness measurements. On four separate days 41 professional firefighters (39 ± 9 yr, 179.6 ± 2.3 cm, 84.4 ± 9.2 kg, BMI 26.1 ± 2.8 kg/m(2)) performed treadmill testing, fitness testing (strength, balance and flexibility) and a simulated firefighting exercise. The firefighting exercise included ladder climbing (20 m), treadmill walking (200 m), pulling a wire rope hoist (15 times) and crawling an orientation section (50 m)...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302596/estimating-accuracy-at-exercise-intensities-a-comparative-study-of-self-monitoring-heart-rate-and-physical-activity-wearable-devices
#14
Erin E Dooley, Natalie M Golaszewski, John B Bartholomew
BACKGROUND: Physical activity tracking wearable devices have emerged as an increasingly popular method for consumers to assess their daily activity and calories expended. However, whether these wearable devices are valid at different levels of exercise intensity is unknown. OBJECTIVE: The objective of this study was to examine heart rate (HR) and energy expenditure (EE) validity of 3 popular wrist-worn activity monitors at different exercise intensities. METHODS: A total of 62 participants (females: 58%, 36/62; nonwhite: 47% [13/62 Hispanic, 8/62 Asian, 7/62 black/ African American, 1/62 other]) wore the Apple Watch, Fitbit Charge HR, and Garmin Forerunner 225...
March 16, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28301895/association-of-fetal-heart-rate-baseline-change-and-neonatal-outcomes
#15
Michael Yang, Molly J Stout, Julia D López, Ryan Colvin, George A Macones, Alison G Cahill
Objective The objective of this study was to describe the incidence of baseline change within normal range during labor and its prediction of neonatal outcomes. Materials and Methods This was a prospective cohort of singleton, nonanomalous, term neonates with continuous electronic fetal monitoring and normal baseline fetal heart rate throughout the last 2 hours of labor. We determined baseline in 10-minute segments using Eunice Kennedy Shriver National Institute of Child Health and Human Development criteria...
March 16, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28300460/smartphone-based-photoplethysmographic-imaging-for-heart-rate-monitoring
#16
Maha Alafeef
The purpose of this study is to make use of visible light reflected mode photoplethysmographic (PPG) imaging for heart rate (HR) monitoring via smartphones. The system uses the built-in camera feature in mobile phones to capture video from the subject's index fingertip. The video is processed, and then the PPG signal resulting from the video stream processing is used to calculate the subject's heart rate. Records from 19 subjects were used to evaluate the system's performance. The HR values obtained by the proposed method were compared with the actual HR...
March 16, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28298790/effect-of-periradial-administration-of-papaverine-on-radial-artery-diameter
#17
P S Nagaraja, Naveen G Singh, N Manjunatha, Rushikesh Chintamanrao Desai
BACKGROUND: Radial artery cannulation is a skillful procedure. An experienced anesthesiologist might also face difficulty in cannulating a feeble radial pulse. AIM: The purpose of the study was to determine whether periradial subcutaneous administration of papaverine results in effective vasodilation and improvement in the palpability score of radial artery. SETTINGS AND DESIGN: Prospective, double-blinded trial. METHODOLOGY: Thirty patients undergoing elective cardiac surgery were enrolled in the study...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298788/effects-of-lignocaine-administered-intravenously-or-intratracheally-on-airway-and-hemodynamic-responses-during-emergence-and-extubation-in-patients-undergoing-elective-craniotomies-in-supine-position
#18
Tabasum Shabnum, Zulfiqar Ali, Imtiaz Ahmad Naqash, Aabid Hussain Mir, Khan Azhar, Syed Amer Zahoor, Abdul Waheed Mir
INTRODUCTION: Sympathoadrenergic responses during emergence and extubation can lead to an increase in heart rate (HR) and blood pressure whereas increased airway responses may lead to coughing and laryngospasm. The aim of our study was to compare the effects of lignocaine administered intravenously (IV) or intratracheally on airway and hemodynamic responses during emergence and extubation in patients undergoing elective craniotomies. METHODOLOGY: Sixty patients with physical status American Society of Anaesthesiologists Classes I and II aged 18-70 years, scheduled to undergo elective craniotomies were included...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298757/low-dose-dexmedetomidine-attenuates-hemodynamic-response-to-skull-pin-holder-application
#19
Shwethashri Ramaprasannakumar Kondavagilu, Vinayak Seenappa Pujari, Mohan V R Chadalawada, Yatish Bevinguddaiah
BACKGROUND: The application of skull pin holder elicits an adverse hemodynamic response that can be deleterious; there are many drugs that have been used to attenuate this response. We have conducted this study to evaluate the efficacy of intravenous (i.v.) dexmedetomidine on attenuation of hemodynamic responses to skull pin head holder application and to compare the effectiveness of two doses of i.v. dexmedetomidine (1 μg/kg and 0.5 μg/kg bolus). MATERIALS AND METHODS: Ninety American Society of Anesthesiologists physical Status I-III patients undergoing craniotomy were randomized into three groups of thirty each...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28294444/effect-of-change-in-posture-on-maternal-functional-hemodynamics-at-35-37-weeks-gestation
#20
Gavin P Guy, Hua Z Ling, Mirian Machuca, Liona C Poon, Kypros H Nicolaides
OBJECTIVE: To evaluate the effect of posture change from the supine to sitting position and before and after passive leg raising on maternal functional hemodynamics in pregnant women at 35-37 weeks' gestation and to compare the changes in pregnancies that subsequently developed preeclampsia (PE) and gestational hypertension (GH) to those who remained normotensive. METHODS: In 3,013 singleton pregnancies at 35-37 weeks' gestation maternal cardiovascular parameters were measured using an automated non-invasive cardiac monitor...
March 13, 2017: Ultrasound in Obstetrics & Gynecology
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