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https://www.readbyqxmd.com/read/28440954/heart-rate-variability-indices-as-predictors-of-the-response-to-vagus-nerve-stimulation-in-patients-with-drug-resistant-epilepsy
#1
Hongyun Liu, Zhao Yang, Lei Huang, Wei Qu, Hongwei Hao, Luming Li
OBJECTIVE: To assess heart-rate variability (HRV) measures of interictal electrocardiography (ECG) for drug-resistant epilepsy and to relate the findings to the outcome of vagus nerve stimulation (VNS) treatment. METHODS: Time-domain, frequency-domain, and nonlinear analyses were used to analyze preoperative HRV measures in 32 patients with drug-resistant epilepsy who had received VNS implants at the same hospital and 32 healthy age- and sex-matched control subjects...
April 25, 2017: Epilepsia
https://www.readbyqxmd.com/read/28439158/trigemino-cardiac-reflex-a-phenomenon-neglected-in-maxillofacial-surgery
#2
Udupikrishna M Joshi, Ashwini Munnangi, Kundan Shah, Satishkumar G Patil, Nitin Thakur
BACKGROUND: Trigemino-cardiac reflex is a physiologic response of the body to pressure effects in the region of distribution of the trigeminal nerve. Oral and maxillofacial surgical procedures can induce the development of this reflex, which leads to significant changes in the heart rate and sinus rhythms. This study intends to evaluate the effects of this reflex in patients with facial fractures and its subsequent management. PATIENTS AND METHODS: A total of thirty-seven patients with facial fractures who reported to the Department of Oral and Maxillofacial Surgery at Basaveswar Teaching and General Hospital, Gulbarga during a period from July 2015-March 2016 were considered for the study...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28437466/stage-call-cardiovascular-reactivity-to-audition-stress-in-musicians
#3
Theerasak Chanwimalueang, Lisa Aufegger, Tricia Adjei, David Wasley, Cinzia Cruder, Danilo P Mandic, Aaron Williamon
Auditioning is at the very center of educational and professional life in music and is associated with significant psychophysical demands. Knowledge of how these demands affect cardiovascular responses to psychosocial pressure is essential for developing strategies to both manage stress and understand optimal performance states. To this end, we recorded the electrocardiograms (ECGs) of 16 musicians (11 violinists and 5 flutists) before and during performances in both low- and high-stress conditions: with no audience and in front of an audition panel, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28436550/epicardial-brugada-syndrome-ablation-unmasking-inferior-j-waves
#4
Adam Lee, Heidi Kohler, Daniel Wright, Haris M Haqqani
Patients with Brugada syndrome are at risk of life threatening ventricular arrhythmias. Epicardial substrate ablation for Brugada syndrome has been described as a means of controlling these arrhythmias and recent reports describe elimination of the Brugada phenotype with ablation. We describe a unique case in which a patient developed inferior J waves with an early repolarization-type electrocardiogram following successful epicardial infundibular substrate ablation (which eliminated the Brugada syndrome ECG on ajmaline challenge)...
April 24, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28416413/evaluation-of-the-physiotel%C3%A2-digital-m11-cardiovascular-telemetry-implant-in-socially-housed-cynomolgus-monkeys-up-to-16weeks-after-surgery
#5
Ninette K Andersen, Olivier Meyer, Alys Bradley, Nils Dragsted, Anders B Lassen, Ingrid Sjögren, Julie M Larsen, Warren Harvey, Rastislav Bator, Aileen Milne
INTRODUCTION: The novel PhysioTel™ Digital M11 telemetry implant was evaluated in socially housed monkeys with respect to both safety pharmacological cardiovascular (arterial blood pressure (BP), heart rate (HR) and electrocardiogram (ECG)) and toxicological (clinical pathology and histopathology) endpoints. METHODS: Telemetry and clinical pathology data were obtained repeatedly up to 16weeks after surgery in four female cynomolgus monkeys, followed by necropsy...
April 14, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28415901/sloping-abr-baselines-and-the-ecg-myogenic-artefact
#6
Guy Lightfoot
OBJECTIVE: To investigate the possibility that a sloping baseline in an ABR recording has its origins in cardiac activity and if so, identify how it is expressed. DESIGN: The effect of ECG removal on the averaged ABR was investigated at two artefact rejection levels. STUDY SAMPLE: Ten 1-minute records of raw EEG containing ABR responses but contaminated with cardiac activity were recorded from babies under 12 weeks of age and re-averaged using two artefact rejection levels...
April 18, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28414603/cardiovascular-findings-in-ponies-with-equine-metabolic-syndrome
#7
Natalie Heliczer, Vinzenz Gerber, Rupert Bruckmaier, Johannes H van der Kolk, Cristobal Navas de Solis
OBJECTIVE To determine whether hypertension, high sympathetic tone, resting and exercising arrhythmias, and echocardiographic changes consistent with hypertensive cardiomyopathy were associated with equine metabolic syndrome (EMS) in ponies. DESIGN Prospective case-control study. ANIMALS 19 privately owned ponies with a diagnosis of EMS (history of laminitis, body condition score ≥ 7/9, cresty neck score ≥ 3/5, and abnormal oral sugar test result; cases) and 20 healthy control ponies. PROCEDURES Heart rate (HR), noninvasively measured arterial blood pressure (BP), markers of autonomic tone (splenic volume and HR variability), 24-hour and exercising ECGs, and echocardiograms were compared between cases and controls...
May 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28407862/lipid-profiles-of-follicular-fluid-from-cows-submitted-to-ovarian-superstimulation
#8
P H Santos, P K Fontes, F F Franchi, M F G Nogueira, K R A Belaz, A Tata, M N Eberlin, M J Sudano, C M Barros, A C S Castilho
Ovarian superstimulation with exogenous gonadotropins has been extensively used to produce in vivo-derived embryos for embryo transfer in cattle. This process modifies the antral follicle microenvironment and affects oocyte and embryo quality as well the differentiation of granulosa cells. Lipids play significant roles in the cell, such as energy storage, cell structure, and fine-tuning of the physical properties and functions of biological membranes. The phospholipid (PL) contents as well as the effects of superstimulatory treatments on the PL profile of follicular fluid from cows, however, remain unknown...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28401870/response-of-narrow-qrs-tachycardia-to-premature-atrial-extra-what-is-the-mechanism
#9
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Bharatraj Banavalikar, Sreevilasam Pushpangadhan Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
A 60-year-old woman was referred for radiofrequency catheter ablation of narrow QRS tachycardia that was terminated with intravenous adenosine. Twelve-lead ECG showed no baseline preexcitation. Echocardiogram was essentially normal. The electrophysiological study showed a normal AH interval of 114 ms and HV interval of 48 ms during sinus rhythm. Anterograde study demonstrated no dual AV nodal physiology. Atrial pacing protocols easily and reproducibly induced narrow QRS tachycardia (Fig. 1A & 1B). Premature atrial extra (PAE) stimuli were delivered during the tachycardia (Fig...
November 2016: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/28390903/obesity-is-associated-with-lack-of-inhibitory-control-and-impaired-heart-rate-variability-reactivity-and-recovery-in-response-to-food-stimuli
#10
Grazia Fernanda Spitoni, Cristina Ottaviani, Anna Maria Petta, Pietro Zingaretti, Massimiliano Aragona, Antonio Sarnicola, Gabriella Antonucci
Recent theories compare obesity with addiction in terms of lack of inhibitory control in both clinical populations. The present study hypothesized impaired inhibition in obese patients reflected both in executive functions and reduced vagal tone (indexed by a decrease in heart rate variability; HRV) in response to food stimuli. Twenty-four inpatients with obesity (19 women) and 37 controls (24 women) underwent ECG monitoring during baseline, food stimuli viewing, and a recovery phase. Tests and questionnaires assessing inhibitory control and psychopathological dispositions were also administered...
April 6, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28389047/effects-of-ecg-and-progesterone-on-superovulation-and-embryo-production-in-wood-bison-bison-bison-athabascae
#11
J Manuel Palomino, Miriam P Cervantes, Murray R Woodbury, Reuben J Mapletoft, Gregg P Adams
Experiments were done to determine if inclusion of eCG and progesterone in the superstimulation protocol will increase the ovarian response and embryo production in wood bison, and to provide preliminary information regarding the effect of season. In Experiment 1 (anovulatory season), bison (n=26) were synchronized by follicular ablation (Day -1) and given FSH on Days 0 and 2, and assigned to 3 groups: Progesterone (Days 0-4), eCG (Day 3), or progesterone+eCG. On Day 5, bison were given hCG and inseminated 12 and 24h later...
March 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28386627/baroreflex-gain-and-vasomotor-sympathetic-modulation-in-resistant-hypertension
#12
Isabelle Magalhães Guedes Freitas, Leonardo Barbosa de Almeida, Natália Portela Pereira, Pedro Augusto de Carvalho Mira, Rogério Baumgratz de Paula, Daniel Godoy Martinez, Edgar Toschi-Dias, Mateus Camaroti Laterza
PURPOSE: The aim of this study was to determine the gain and latency of arterial baroreflex control of heart rate in patients with resistant hypertension compared to patients with essential hypertension and normotensive subjects. METHODS: Eighteen patients with resistant hypertension (56 ± 10 years, mean of four antihypertensive drugs), 17 patients with essential hypertension (56 ± 11 years, mean of two antihypertensive drugs), and 17 untreated normotensive controls (50 ± 15 years) were evaluated by spectral analysis of the spontaneous fluctuations of arterial pressure (beat-to-beat) and heart rate (ECG)...
April 6, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28384272/a-novel-low-complexity-digital-filter-design-for-wearable-ecg-devices
#13
Shadnaz Asgari, Alireza Mehrnia
Wearable and implantable Electrocardiograph (ECG) devices are becoming prevailing tools for continuous real-time personal health monitoring. The ECG signal can be contaminated by various types of noise and artifacts (e.g., powerline interference, baseline wandering) that must be removed or suppressed for accurate ECG signal processing. Limited device size, power consumption and cost are critical issues that need to be carefully considered when designing any portable health monitoring device, including a battery-powered ECG device...
2017: PloS One
https://www.readbyqxmd.com/read/28383399/poststroke-alterations-in-heart-rate-variability-during-orthostatic-challenge
#14
Joel Rodriguez, Andrew Philip Blaber, Markus Kneihsl, Irhad Trozic, Rebecca Ruedl, David A Green, James Broadbent, Da Xu, Andreas Rössler, Helmut Hinghofer-Szalkay, Franz Fazekas, Nandu Goswami
Older adults following recovery from ischemic stroke have a higher incidence of orthostatic hypotension, syncope, and fall risk, which may be related to impaired autonomic responses limiting the ability to maintain cerebral blood flow. Thus, we investigated cerebrovascular and cardiovascular regulation in 23 adults ≥55 years of age, 10 diagnosed with ischemic stroke, and 13 age-matched healthy controls when sitting at rest and upon standing to compare differences of autonomic variables at ∼7 months (218 ± 41 days) poststroke...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28374725/-the-spa-and-health-resort-based-treatment-of-the-women-of-various-employments-presenting-with-arterial-hypertension
#15
E L Apsheva, A A El'garov, M A Kalmykova, M A El'garov
AIM: The objective of the present study was to evaluate the effectiveness of balneotherapy for the women of various employments presenting with arterial hypertension. MATERIAL AND METHODS: The study included 57 women with stage I (n=29) and II (n=28) hypertension. One study group was comprised of 28 female motor drivers including taxi-drivers (n=12), personal car drivers (n=7), and trolleybus drivers (n=9) at the mean age of 46,2±6,9 years suffering from occupational emotional stress (OES) and systematic psychoemotional tension (PET)...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28367846/impact-of-hypertension-and-subclinical-organ-damage-on-the-incidence-of-cardiovascular-disease-among-japanese-residents-at-the-population-and-individual-levels%C3%A3-the-circulatory-risk-in-communities-study-circs
#16
Akihiko Kitamura, Kazumasa Yamagishi, Hironori Imano, Masahiko Kiyama, Renzhe Cui, Tetsuya Ohira, Mitsumasa Umesawa, Isao Muraki, Tomoko Sankai, Isao Saito, Hiroyasu Iso
BACKGROUND: In Japan, a community-based screening program for cardiovascular disease (CVD) has been effective in preventing stroke and coronary artery disease (CAD). The present study aimed to clarify which risk factors assessed at the screening examinations affect the incidence of CVD and the magnitude of the association after the late 1990 s.Methods and Results:We conducted a 12.5-year prospective study of 10,612 Japanese residents aged 40-74 years between 1995 and 2000, initially free of CVD and who underwent the screening examinations...
March 29, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28363973/electrical-and-structural-adaptations-of-the-paediatric-athlete-s-heart-a-systematic-review-with-meta-analysis
#17
REVIEW
Gavin McClean, Nathan R Riding, Clare L Ardern, Abdulaziz Farooq, Guido E Pieles, Victoria Watt, Carmen Adamuz, Keith P George, David Oxborough, Mathew G Wilson
AIM: To describe the electrocardiographic (ECG) and echocardiographic manifestations of the paediatric athlete's heart, and examine the impact of age, race and sex on cardiac remodelling responses to competitive sport. DESIGN: Systematic review with meta-analysis. DATA SOURCES: Six electronic databases were searched to May 2016: MEDLINE, PubMed, EMBASE, Web of Science, CINAHL and SPORTDiscus. INCLUSION CRITERIA: (1) Male and/or female competitive athletes, (2) participants aged 6-18 years, (3) original research article published in English language...
March 31, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28349167/evaluation-of-the-effect-of-the-egfr-antibody-drug-conjugate-abt-414-on-qt-interval-prolongation-in-patients-with-advanced-solid-tumors-likely-to-over-express-egfr
#18
Wijith P Munasinghe, Rajendar K Mittapalli, Hong Li, David M Hoffman, Kyle D Holen, Rajeev M Menon, Hao Xiong
PURPOSE: ABT-414 is an antibody-drug conjugate (ADC) being developed for the treatment of tumors harboring amplification of the epidermal growth factor receptor (EGFR). This study evaluated the potential of ABT-414 to prolong the QT interval as part of the initial phase 1 study (NCT01741727). METHODS: Data from patients who received ABT-414 monotherapy at a dose of 1-4 mg/kg once every 3 weeks or 1 or 1.5 mg/kg weekly for 2 out of every 3 weeks (alternate schedule) by intravenous infusion were included in the analysis of triplicate 12-lead ECGs obtained before dosing and through 168 h after dosing...
March 27, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28347407/response-to-ecg-march-2017
#19
Alfonso Macías, Sara Castaño, Inés Madrazo
No abstract text is available yet for this article.
April 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28335284/graphene-enabled-electrodes-for-electrocardiogram-monitoring
#20
Numan Celik, Nadarajah Manivannan, Andrew Strudwick, Wamadeva Balachandran
The unique parameters of graphene (GN)-notably its considerable electron mobility, high surface area, and electrical conductivity-are bringing extensive attention into the wearable technologies. This work presents a novel graphene-based electrode for acquisition of electrocardiogram (ECG). The proposed electrode was fabricated by coating GN on top of a metallic layer of a Ag/AgCl electrode using a chemical vapour deposition (CVD) technique. To investigate the performance of the fabricated GN-based electrode, two types of electrodes were fabricated with different sizes to conduct the signal qualities and the skin-electrode contact impedance measurements...
August 23, 2016: Nanomaterials
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