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https://www.readbyqxmd.com/read/29351554/field-data-based-mathematical-modeling-by-bode-equations-and-vector-fitting-algorithm-for-renewable-energy-applications
#1
A H Sabry, W Z W Hasan, M Z A Ab Kadir, M A M Radzi, S Shafie
The power system always has several variations in its profile due to random load changes or environmental effects such as device switching effects when generating further transients. Thus, an accurate mathematical model is important because most system parameters vary with time. Curve modeling of power generation is a significant tool for evaluating system performance, monitoring and forecasting. Several numerical techniques compete to fit the curves of empirical data such as wind, solar, and demand power rates...
2018: PloS One
https://www.readbyqxmd.com/read/29351357/changes-in-axial-length-and-progression-of-visual-field-damage-in-glaucoma
#2
Mieko Yanagisawa, Takehiro Yamashita, Masato Matsuura, Yuri Fujino, Hiroshi Murata, Ryo Asaoka
Purpose: To investigate the relationship between axial length (AL) elongation and progression of primary open-angle glaucoma (POAG). Methods: AL was measured twice over a 5.1 ± 0.76 (mean ± standard deviation: SD) year period in 125 eyes of 72 patients with POAG. The eyes were divided into not long (AL < 26 mm, 80 eyes) and long (>26 mm, 45 eyes) groups. During this period, patients' visual fields (VFs) were measured with the Humphrey Field Analyzer 12.4 ± 7...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29350391/-polish-single-center-follow-up-of-s-icd-systems-implanted-for-the-prevention-of-sudden-cardiac-death
#3
Maciej Kempa, Szymon Budrejko, Grzegorz Sławiński, Tomasz Królak, Ewa Lewicka, Grzegorz Raczak
BACKGROUND AND AIM: Subcutaneous implantable cardioverter-defibrillator (S-ICD) is an effective and modern tool used to protect patients at risk of sudden cardiac death from potentially life-threatening ventricular arrhythmias. The first S-ICD systems were implanted in Poland in 2014, but since that time the national experience with that therapy has been limited. Our analysis summarizes the single-center experience at the Department of Cardiology and Electrotherapy of the Medical University of Gdansk with the use of S-ICD from the year 2014 to 2017...
January 19, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29347748/asymmetric-couplings-enhance-the-transition-from-chimera-state-to-synchronization
#4
Changhai Tian, Hongjie Bi, Xiyun Zhang, Shuguang Guan, Zonghua Liu
Chimera state has been well studied recently, but little attention has been paid to its transition to synchronization. We study this topic here by considering two groups of adaptively coupled Kuramoto oscillators. By searching the final states of different initial conditions, we find that the system can easily show a chimera state with robustness to initial conditions, in contrast to the sensitive dependence of chimera state on initial conditions in previous studies. Further, we show that, in the case of symmetric couplings, the behaviors of the two groups are always complementary to each other, i...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29343857/stimulation-of-epicardial-sympathetic-nerves-at-different-sites-induces-cardiac-electrical-instability-to-various-degrees
#5
Liang Wang, Lin Sun, Kun Wang, Yingying Jin, Qing Liu, Zhongnan Xia, Xudong Liu, Jiakun Zhang, Jingjie Li
The cardiac sympathetic nerves distribute across cardiac tissues with uneven density. Yet, to what extent this anatomical heterogeneity affects electrical activity of the left ventricle is largely unknown. Dogs were randomized into non-stimulation control (NC), posterior basal-stimulation (PB), anterior superior-stimulation (AS), apical part-stimulation (AP) group. The epicardial sympathetic nerves at different sites along their distribution were with electrical stimulation (ES) for 4 hours except in the NC group...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343078/quality-of-life-among-hiv-infected-individuals-failing-first-line-antiretroviral-therapy-in-resource-limited-settings
#6
Thiago S Torres, Linda J Harrison, Alberto M La Rosa, Jeffrey A Lavenberg, Lu Zheng, Steven A Safren, McNeil Ngongondo, Selvamuthu Poongulali, Mitch Matoga, Wadzanai Samaneka, Ann C Collier, Michael D Hughes
We evaluated health-related quality of life (QoL) in HIV infection participants with virologic failure (VF) on first-line antiretroviral therapy (ART) in 9 resource-limited settings (RLS). ACTG SF-21 was completed by 512 participants at A5273 study entry; 8 domains assessed: general health perceptions (GHP), physical functioning (PF), role functioning (RF), social functioning (SF), cognitive functioning (CF), pain (P), mental health (MH), and energy/fatigue (E/F); each was scored between 0 (worst) to 100 (best)...
January 18, 2018: AIDS Care
https://www.readbyqxmd.com/read/29338299/mitral-valve-replacement-via-a-left-thoracotomy-in-dextrocardia-and-situs-solitus
#7
María García Vieites, María Jose Martinez-Sapiña Llanas, Marcos Gómez Zincke, Beatriz Bouzas Zubeldía, Victor Bautista-Hernandez
Dextrocardia with situs solitus and severe mitral regurgitation is a rare clinical presentation which posse a surgical challenge and requires specific preoperative planning. A 54-year-old women with this anatomy, multiple thoracic procedures, and severe mitral valve regurgitation underwent successful mitral valve replacement with a 27-mm mechanical prosthesis through a left thoracotomy under ventricular fibrillation, on the basis of computed tomography findings. We emphasize the importance of preoperative planning and a surgical approach through a left thoracotomy and under ventricular fibrillation...
January 1, 2018: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29337174/palliative-care-utilization-following-out-of-hospital-cardiac-arrest-in-the-united-states
#8
Aiham Albaeni, Nisha Chandra-Strobos, Shaker M Eid
AIMS: Palliative care (PC) has become an integral component of comprehensive care provided to critically ill patients. Little is known about the utilization of palliative care following Out-of-Hospital Cardiac Arrest (OHCA) in the United States. METHODS: We used the 2002 to 2013 National Inpatient Sample database to identify adults ≥ 18 years old with an ICD-9-CM principal diagnosis code of cardio-respiratory arrest or ventricular fibrillation (VF). Patients were categorized into two groups based on the presence of PC, then compared using Pearson χ2 test for categorical variables and linear regression for continuous variables...
January 11, 2018: Resuscitation
https://www.readbyqxmd.com/read/29336786/a-possible-role-of-takotsubo-cardiomyopathy-in-ventricular-fibrillation-during-delirium-tremens-a-case-report-and-literature-review
#9
Takuto Ishida, Hiroyuki Uchida, Kazuki Miyazaki, Takahiro Yukawa, Kazuhiro Sugiyama, Yuuichi Hamabe, Masaru Mimura, Takefumi Suzuki
No abstract text is available yet for this article.
November 24, 2017: Psychosomatics
https://www.readbyqxmd.com/read/29335056/vegetable-and-fruit-consumption-among-chinese-adults-and-associated-factors-a-nationally-representative-study-of-170-847-adults
#10
Yi Chong Li, Bo Jiang, Mei Zhang, Zheng Jing Huang, Qian Deng, Mai Geng Zhou, Zhen Ping Zhao, You Fa Wang, Li Min Wang
OBJECTIVE: This study examined vegetable and fruit (VF) consumption rate and its associated factors among Chinese adults. METHODS: Nationally representative data from the 2013 China Chronic Disease Surveillance survey were used. Dietary intake data, including VF consumption during the last 12 months, were collected. All analyses were weighted to obtain nationally representative estimates. Associations between VF consumption and other factors (e.g., meal frequency and physical activity) were examined through logistic regression analysis...
December 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/29334837/more-expertise-for-a-better-perspective-task-and-strategy-driven-adaptive-neurofunctional-reorganization-for-word-production-in-high-performing-older-adults
#11
Ikram Methqal, Yannick Marsolais, Maximiliano A Wilson, Oury Monchi, Yves Joanette
The suggestion that neurofunctional reorganization may contribute to preserved language abilities is still emerging in aging studies. Some of these abilities, such as verbal fluency (VF), are not unitary but instead rely on different strategic processes that are differentially changed with age. Younger (n = 13) and older adults (n = 13) carried out an overt self-paced semantic and orthographic VF tasks within mixed fMRI design. Our results suggest that patterns of brain activation sustaining equivalent performances could be underpinned by different strategies facing brain changes during healthy aging...
January 16, 2018: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/29332427/serum-potassium-levels-and-outcomes-in-critically-ill-patients-in-the-medical-intensive-care-unit
#12
Surat Tongyoo, Tanuwong Viarasilpa, Chairat Permpikul
Objective To compare the outcomes of patients with and without a mean serum potassium (K+) level within the recommended range (3.5-4.5 mEq/L). Methods This prospective cohort study involved patients admitted to the medical intensive care unit (ICU) of Siriraj Hospital from May 2012 to February 2013. The patients' baseline characteristics, Acute Physiology and Chronic Health Evaluation II (APACHE II) score, serum K+ level, and hospital outcomes were recorded. Patients with a mean K+ level of 3.5 to 4.5 mEq/L and with all individual K+ values of 3...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29330448/visual-field-loss-and-vision-related-quality-of-life-in-the-italian-primary-open-angle-glaucoma-study
#13
Eliana Rulli, Luciano Quaranta, Ivano Riva, Davide Poli, Lital Hollander, Fabio Galli, Andreas Katsanos, Francesco Oddone, Valter Torri, Robert N Weinreb
The aim of this study was to examine the relationship between visual field (VF) loss, vision-related quality of life (QoL) and glaucoma-related symptoms in a large cohort of primary open angle glaucoma (POAG) patients. POAG patients with or without VF defects or "glaucoma suspect" patients were considered eligible. QoL was assessed using the validated versions of the 25-item National Eye Institute Visual Function Questionnaire (NEI-VFQ-25) and glaucoma-related symptoms were assessed using the Glaucoma Symptom Scale (GSS)...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29325977/role-of-apamin-sensitive-small-conductance-calcium-activated-potassium-currents-in-long-term-cardiac-memory-in-rabbits
#14
Dechun Yin, Mu Chen, Na Yang, Adonis Z Wu, Dongzhu Xu, Wei-Chung Tsai, Yuan Yuan, Zhipeng Tian, Yi-Hsin Chan, Changyu Shen, Zhenhui Chen, Shien-Fong Lin, James N Weiss, Peng-Sheng Chen, Thomas H Everett
BACKGROUND: Apamin-sensitive small conductance calcium-activated K current (IKAS) is upregulated during ventricular pacing and masks short-term cardiac memory (CM). OBJECTIVE: - To determine the role of IKAS in long-term CM. METHODS: - CM was created with 3-5 weeks of ventricular pacing and defined by a flat or inverted T-wave off pacing. Epicardial optical mapping was performed in both paced and normal ventricles. Action potential duration (APD80) was determined during RA pacing...
January 8, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29324314/down-regulation-of-mir-133a-b-in-patients-with-myocardial-infarction-correlates-with-the-presence-of-ventricular-fibrillation
#15
Emanuela Boštjančič, Tanisa Brandner, Nina Zidar, Damjan Glavač, Dušan Štajer
MicroRNAs (miRNAs) are important regulators of physiologic and pathologic conditions of the heart. Animal models of heart diseases have shown that miRNAs may contribute to the development of arrhythmias. However, little is known about the expression of muscle- and cardiac-specific miRNAs in patients with myocardial infarction (MI) who have developed ventricular fibrillation (VF). Our study included 47 patients who had died from myocardial infarction (MI), 23 with clinically proven VF and 24 without VF. Autopsy samples of infarcted tissue and remote myocardium were available (n = 94)...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29321418/optimal-medications-and-appropriate-implantable-cardioverter-defibrillator-shocks-in-aborted-sudden-cardiac-death-due-to-coronary-spasm
#16
Shozo Sueda, Hiroaki Kohno
Background Life-threatening ventricular arrhythmias are recognized in patients with coronary spastic angina. Implantable cardioverter-defibrillators (ICDs) are effective in patients with structural heart disease and ventricular fibrillation. However, the optimal medication for patients with aborted sudden cardiac death (SCD) due to coronary artery spasm after the implantation of ICD remains controversial. Methods We investigated the medications and the numbers of appropriate ICD shocks in 137 patients with a history of aborted SCD due to coronary spasm...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29321319/non-structural-protein-%C3%AF-1s-is-required-for-optimal-reovirus-protein-expression
#17
Matthew B Phillips, Johnasha D Stuart, Emily J Simon, Karl W Boehme
Reovirus non-structural protein σ1s is required for the establishment of viremia and hematogenous viral dissemination. However, the function of the σ1s protein during the reovirus replication cycle is not known. In this study, we found that σ1s was required for efficient reovirus replication in SV40-immortalized endothelial cells (SVECs), mouse embryonic fibroblasts, human umbilical vein endothelial cells (HUVECs), and T84 human colonic epithelial cells. In each of these cell lines, wild type reovirus produced substantially higher viral titers than a σ1s-deficient mutant...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29318626/trends-and-predictors-of-implantable-cardioverter-defibrillator-implantation-after-sudden-cardiac-arrest-insight-from-the-national-inpatient-sample
#18
Muhammad Bilal Munir, Fahad Alqahtani, Sami Aljohani, Ashwin Bhirud, Sujal Modi, Mohamad Alkhouli
BACKGROUND: Implantable cardioverter defibrillator (ICD) has a class IA indication in survivors of sudden cardiac arrest (SCA) provided no reversible cause is identified. We sought to determine trends and predictors of ICD implant in SCA patients from a national sample of United States population. METHODS AND RESULTS: Data was gathered from National Inpatient Sample (NIS) from January 2003 to December 2014. All patients ≥ 18 years of age with a primary discharge diagnosis of SCA, ventricular fibrillation (VF), ventricular flutter, and ventricular tachycardia (VT) were included...
January 9, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29317211/baseline-24-2-central-visual-field-damage-is-predictive-of-global-progressive-field-loss
#19
Aakriti Garg, C Gustavo De Moraes, George A Cioffi, Christopher A Girkin, Felipe A Medeiros, Robert N Weinreb, Linda Zangwill, Jeffrey M Liebmann
PURPOSE: Central visual field (VF) damage in glaucoma patients can significantly hinder daily activities. The present study investigates whether the presence of localized baseline damage to the central ten degrees of the VF is predictive of faster global mean deviation (MD) progression. DESIGN: Prospective, cohort study. METHODS: Eyes from the multicenter African Descent and Glaucoma Evaluation Study (ADAGES) with established glaucoma and VF loss and a minimum of five 24-2 VFs were eligible...
January 6, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29315657/dysautonomy-in-different-death-risk-groups-rassi-score-in-patients-with-chagas-heart-disease
#20
Catherine Masiel Merejo Peña, Michel Silva Reis, Basílio de Bragança Pereira, Emília Matos do Nascimento, Roberto Coury Pedrosa
BACKGROUND: It has been difficult to prove that the "catecholamine-induced cardiomyopathy" contributes to the mechanism of sudden cardiac death in Chagas heart disease. Also, it is almost impossible to rule out the possibility that is not involved in the process. More importantly, the vagal-cholinergic pathway in the ventricle plays a direct role in the prevention of the initiation of complex ventricular arrhythmias, including non-sustained ventricular tachycardia, ventricular fibrillation responsible for sudden death...
January 5, 2018: Pacing and Clinical Electrophysiology: PACE
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