keyword
MENU ▼
Read by QxMD icon Read
search

Hf

keyword
https://www.readbyqxmd.com/read/27936043/reproducibility-for-heart-rate-variability-analysis-during-6-min-walk-test-in-patients-with-heart-failure-and-agreement-between-devices
#1
Lays Magalhães Braga, Gustavo Faibischew Prado, Iracema Ioco Kikuchi Umeda, Tatiana Satie Kawauchi, Adriana Marques Fróes Taboada, Raymundo Soares Azevedo, Horacio Gomes Pereira Filho, César José Grupi, Hayala Cristina Cavenague Souza, Dalmo Antônio Ribeiro Moreira, Naomi Kondo Nakagawa
Heart rate variability (HRV) analysis is a useful method to assess abnormal functioning in the autonomic nervous system and to predict cardiac events in patients with heart failure (HF). HRV measurements with heart rate monitors have been validated with an electrocardiograph in healthy subjects but not in patients with HF. We explored the reproducibility of HRV in two consecutive six-minute walk tests (6MW), 60-minute apart, using a heart rate monitor (PolarS810i) and a portable electrocardiograph (called Holter) in 50 HF patients (mean age 59 years, NYHA II, left ventricular ejection fraction ~35%)...
2016: PloS One
https://www.readbyqxmd.com/read/27934525/dynamic-chemically-driven-dewetting-spreading-and-self-running-of-sessile-droplets-on-crystalline-silicon
#2
Steve Arscott
A chemically driven dewetting effect is demonstrated using sessile droplets of dilute hydrofluoric acid on chemically oxidized silicon wafers. The dewetting occurs as the thin oxide is slowly etched by the droplet and replaced by a hydrogen-terminated surface; the result of this is a gradual increase in the contact angle of the droplet with time. The time-varying work of adhesion is calculated from the time-varying contact angle; this corresponds to the changing chemical nature of the surface during dewetting and can be modeled by the well-known logistic (sigmoid) function often used for the modeling of restricted growth, in this case, the transition from an oxidized surface to a hydrogen-terminated silicon surface...
December 6, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27934407/synthesis-and-characterization-of-adducts-between-sf4-and-oxygen-bases-examples-of-o%C3%A2-%C3%A2-%C3%A2-s-iv-chalcogen-bonding
#3
James T Goettel, Michael Gerken
Lewis acid-base adducts between SF4 and the oxygen bases tetrahydrofuran, cyclopentanone, and 1,2-dimethoxyethane were synthesized and characterized by Raman spectroscopy and X-ray crystallography. Crystal structures of (SF4·OC4H8)2, SF4·(OC4H8)2, SF4·CH3OC2H4OCH3, and SF4·(O═C5H8)2 show weak S···O chalcogen bonding interactions ranging from 2.662(2) to 2.8692(9) Å. Caffeine, which has three Lewis basic sites, was reacted with SF4 and one aliquot of HF forming C8H10N4O2·2SF4·HF, which was also characterized by X-ray crystallography...
December 5, 2016: Inorganic Chemistry
https://www.readbyqxmd.com/read/27933574/-long-term-hrv-analysis-shows-stress-reduction-by-magnesium-intake
#4
Elmar Wienecke, Claudia Nolden
BACKGROUND: Mental pressure and stress represent an ever-increasing socio-political challenge. The heart rate variability (HRV) measurement, which has its origin in the cardiac function diagnosis, gives information on the neurovegetative activity. A low HRV shows an imbalance of the sympathetic and parasympathetic efferents and thus is an indicator of stress. METHOD: A randomized, controlled, two-armed parallel study with 100 participants and a period of 90 days was performed...
December 2016: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/27933568/healthcare-costs-among-patients-with-heart-failure-a-comparison-of-costs-between-matched-decedent-and-survivor-cohorts
#5
Engels N Obi, Jason P Swindle, Stuart J Turner, Patricia A Russo, Aylin Altan
INTRODUCTION: Prior research suggests increased costs during the final months of life, yet little is known about healthcare cost differences between patients with heart failure (HF) who die or survive. METHODS: A retrospective claims study from a large US health plan [commercial and Medicare Advantage with Part D (MAPD)] was conducted. Patients were ≥18 years old with two non-inpatient or one inpatient claim(s) with HF diagnosis code(s). The earliest HF claim date during 1 January 2010-31 December 2011 was the index date...
December 8, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27933194/contribution-of-the-long-term-care-insurance-certificate-for-predicting-1-year-all-cause-readmission-compared-with-validated-risk-scores-in-elderly-patients-with-heart-failure
#6
Kayo Takahashi, Makoto Saito, Shinji Inaba, Toru Morofuji, Hiroe Aisu, Takumi Sumimoto, Akiyoshi Ogimoto, Shuntaro Ikeda, Jitsuo Higaki
OBJECTIVES: Readmission is a common and serious problem associated with heart failure (HF). Unfortunately, conventional risk models have limited predictive value for predicting readmission. The recipients of long-term care insurance (LTCI) are frail and have mental and physical impairments. We hypothesised that adjustment of the conventional risk score with an LTCI certificate enables a more accurate appreciation of readmission for HF. METHODS: We investigated 452 patients with HF who were followed up for 1 year to determine all-cause readmission...
2016: Open Heart
https://www.readbyqxmd.com/read/27932261/does-adding-clinical-data-to-administrative-data-improve-agreement-among-hospital-quality-measures
#7
Amresh D Hanchate, Kelly L Stolzmann, Amy K Rosen, Aaron S Fink, Michael Shwartz, Arlene S Ash, Hassen Abdulkerim, Mary Jo V Pugh, Priti Shokeen, Ann Borzecki
BACKGROUND: Hospital performance measures based on patient mortality and readmission have indicated modest rates of agreement. We examined if combining clinical data on laboratory tests and vital signs with administrative data leads to improved agreement with each other, and with other measures of hospital performance in the nation's largest integrated health care system. METHODS: We used patient-level administrative and clinical data, and hospital-level data on quality indicators, for 2007-2010 from the Veterans Health Administration (VA)...
December 5, 2016: Healthcare
https://www.readbyqxmd.com/read/27931551/metabolic-manipulation-in-dilated-cardiomyopathy-assessing-the-role-of-trimetazidine
#8
Suman Jatain, Aditya Kapoor, Archana Sinha, Roopali Khanna, Sudeep Kumar, Naveen Garg, Satyendra Tewari, Pravin Goel
OBJECTIVES: To study the role of metabolic modulator (trimetazidine: TMZ) in dilated cardiomyopathy (DCM). Optimizing altered substrate metabolism in heart failure (HF) with metabolic modulators allows more efficacious energy production from glucose than from free fatty acids. METHODS: 100 patients of DCM (47.7 years, NYHA class 2.17, LVEF 27.3%) were randomized to TMZ (20mg tid, n=50) vs conventional therapy (n=50). Functional status, BNP and various echocardiographic parameters were assessed at 3-6 months...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27931267/western-diet-in-the-perinatal-period-promotes-dysautonomia-in-the-offspring-of-adult-rats
#9
R Vidal-Santos, F N Macedo, M N S Santana, V U De Melo, J L de Brito Alves, M R V Santos, L C Brito, E Nascimento, J H Costa-Silva, V J Santana-Filho
The present study investigated the impact of a western diet during gestation and lactation on the anthropometry, serum biochemical, blood pressure and cardiovascular autonomic control on the offspring. Male Wistar rats were divided into two groups according to their mother's diet received: control group (C: 18% calories of lipids) and westernized group (W: 32% calories of lipids). After weaning both groups received standard diet. On the 60th day of life, blood samples were collected for the analysis of fasting glucose and lipidogram...
December 9, 2016: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/27931234/patterns-and-determinants-of-malaria-risk-in-urban-and-peri-urban-areas-of-blantyre-malawi
#10
Don P Mathanga, Atupele Kapito Tembo, Themba Mzilahowa, Andy Bauleni, Kondwani Mtimaukenena, Terrie E Taylor, Clarissa Valim, Edward D Walker, Mark L Wilson
BACKGROUND: Although malaria disease in urban and peri-urban areas of sub-Saharan Africa is a growing concern, the epidemiologic patterns and drivers of transmission in these settings remain poorly understood. Factors associated with variation in malaria risk in urban and peri-urban areas were evaluated in this study. METHODS: A health facility-based, age and location-matched, case-control study of children 6-59 months of age was conducted in four urban and two peri-urban health facilities (HF) of Blantyre city, Malawi...
December 8, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27930914/a-high-fat-diet-induced-decrease-in-hippocampal-newly-born-neurons-of-male-mice-is-exacerbated-by-mild-psychological-stress-using-a-communication-box
#11
Yusuke Murata, Yukiyasu Narisawa, Rima Shimono, Hiraku Ohmori, Masayoshi Mori, Kenji Ohe, Kazunori Mine, Munechika Enjoji
BACKGROUND: Obese persons have a higher incidence of depression than healthy-weight persons. Several studies indicated that the exposure to a high fat diet (HFD) results in a decrease in hippocampal neurogenesis, which leads to higher stress response and stress-induced depression. Although stress is a risk factor for obesity and depression, no studies to date have investigated the effect of stress on the hippocampal neurogenesis of HFD-induced obese animals. The aim of this study was to elucidate whether or not obese HFD-fed mice are vulnerable to stress-induced depression by investigating hippocampal neurogenesis...
November 30, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27928569/planar-pentacoordinate-carbon-atoms-embedded-in-a-metallocene-framework
#12
Zhong-Hua Cui, Valentin Vassilev-Galindo, José Luis Cabellos, Edison Osorio, Mesías Orozco, Sudip Pan, Yi-Hong Ding, Gabriel Merino
Viable planar pentacoordinate carbon (ppC) systems with a ppC bonded to a transition metal and embedded in a metallocene framework are reported. Our detailed global minima search shows that CAl4MX2 (M = Zr and Hf; X = F-I and C5H5) clusters with ppCs are appropriate candidates for experimental realization in the gas phase. The fulfillment of the 18 electron rule and electron delocalization is found to be crucial for the stabilization of these ppC arrangements.
December 8, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27927714/contemporary-assessment-of-left-ventricular-diastolic-function-in-older-adults-the-atherosclerosis-risk-in-communities-study
#13
Amil M Shah, Brian Claggett, Dalane Kitzman, Tor Biering-Sørensen, Jan S Jensen, Susan Cheng, Kunihiro Matsushita, Suma H Konety, Aaron R Folsom, Thomas H Mosley, Jacqueline Wright, Gerardo Heiss, Scott D Solomon
BACKGROUND: -While age-associated changes in LV diastolic function are well-recognized, limited data exist characterizing measures of diastolic function in older adults, including both reference ranges reflecting the older adult population and prognostically relevant values for incident HF, as well as their associations with circulating biomarkers of heart failure (HF) risk. METHODS: -Among 5,801 elderly participants in the Atherosclerosis Risk in Communities (ARIC) study (age range 67-90, mean age 76 ± 5, 42% male, 21% black), we determined the continuous association of diastolic measures (TDI e', E/e', and left atrial size) with concomitant NT-proBNP and subsequent HF hospitalization or death...
December 7, 2016: Circulation
https://www.readbyqxmd.com/read/27927712/nucleoside-diphosphate-kinase-c-suppresses-camp-formation-in-human-heart-failure
#14
Issam H Abu-Taha, Jordi Heijman, Hans-Jörg Hippe, Nadine M Wolf, Ali El-Armouche, Viacheslav O Nikolaev, Marina Schäfer, Christina Würtz, Stefan Neef, Niels Voigt, István Baczkó, András Varró, Marion Müller, Benjamin Meder, Hugo A Katus, Katharina Spiger, Christiane Vettel, Lorenz H Lehmann, Johannes Backs, Edward Y Skolnik, Susanne Lutz, Dobromir Dobrev, Thomas Wieland
BACKGROUND: -Chronic heart failure (HF) is associated with altered signal transduction via β-adrenoceptors and G proteins, and with reduced cAMP formation. Nucleoside diphosphate kinases (NDPKs) are enriched at the plasma membrane of end-stage HF patients, but the functional consequences of this are largely unknown, particularly for NDPK-C. Here, we investigated the potential role of NDPK-C in cardiac cAMP formation and contractility. METHODS: -Real-time PCR, (Far) Western blot, immunoprecipitation, and immunocytochemistry were used to study the expression, interaction with G proteins, and localization of NDPKs...
December 7, 2016: Circulation
https://www.readbyqxmd.com/read/27927248/multipoint-pacing-versus-conventional-icd-in-patients-with-a-narrow-qrs-complex-mpp-narrow-qrs-trial-study-protocol-for-a-pilot-randomized-controlled-trial
#15
Maurizio Gasparini, Paola Galimberti, Renato Bragato, Stefano Ghio, Claudia Raineri, Maurizio Landolina, Enrico Chieffo, Maurizio Lunati, Ederina Mulargia, Alessandro Proclemer, Domenico Facchin, Roberto Rordorf, Alessandro Vicentini, Lina Marcantoni, Francesco Zanon, Catherine Klersy
BACKGROUND: Despite an intensive search for predictors of the response to cardiac resynchronization therapy (CRT), the QRS duration remains the simplest and most robust predictor of a positive response. QRS duration of ≥ 130 ms is considered to be a prerequisite for CRT; however, some studies have shown that CRT may also be effective in heart failure (HF) patients with a narrow QRS (<130 ms). Since CRT can now be performed by pacing the left ventricle from multiple vectors via a single quadripolar lead, it is possible that multipoint pacing (MPP) might be effective in HF patients with a narrow QRS...
December 3, 2016: Trials
https://www.readbyqxmd.com/read/27925652/inclusion-of-a-rest-period-in-diaphragmatic-breathing-increases-high-frequency-heart-rate-variability-implications-for-behavioral-therapy
#16
Matthew E B Russell, April B Scott, Ian A Boggero, Charles R Carlson
Heart rate variability (HRV) is associated with positive physiological and psychological effects. HRV is affected by breathing parameters, yet debate remains regarding the best breathing interventions for strengthening HRV. The objective of the current study was to test whether the inclusion of a postexhalation rest period was effective at increasing HRV, while controlling for breathing rate. A within-subject crossover design was used with 40 participants who were assigned randomly to a breathing pattern including a postexhalation rest period or a breathing pattern that omitted the postexhalation rest period...
December 7, 2016: Psychophysiology
https://www.readbyqxmd.com/read/27925365/regenerative-electroless-etching-of-silicon
#17
Kurt W Kolasinski, Nathan J Gimbar, Haibo Yu, Mark Aindow, Ermei Mäkilä, Jarno Salonen
Regenerative electroless etching (ReEtching), described herein for the first time, is a method of producing nanostructured semiconductors in which an oxidant (Ox1 ) is used as a catalytic agent to facilitate the reaction between a semiconductor and a second oxidant (Ox2 ) that would be unreactive in the primary reaction. Ox2 is used to regenerate Ox1 , which is capable of initiating etching by injecting holes into the semiconductor valence band. Therefore, the extent of reaction is controlled by the amount of Ox2 added, and the rate of reaction is controlled by the injection rate of Ox2 ...
December 7, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27925284/extent-of-agreement-between-the-body-fluid-model-of-sysmex-xn-20-and-the-manual-microscopy-method
#18
Wei-Hua Huang, Lin-Peng Lu, Kang Wu, Fang-Yu Guo, Jie Guo, Jing-Long Yu, Dao-Yin Zhou, Yi Sun, An-Mei Deng
BACKGROUND: Although the correlations concerning cellular component analysis between the Sysmex XN-20 body fluid (BF) model and manual microscopy have been investigated by several studies, the extent of agreement between these two methods has not been investigated. METHODS: A total of 90 BF samples were prospectively collected and analyzed using the Sysmex XN-20 BF model and microscopy. The extent of agreement between these two methods was evaluated using the Bland-Altman approach...
December 7, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27925195/palmitoleic-acid-improves-metabolic-functions-in-fatty-liver-by-ppar%C3%AE-dependent-ampk-activation
#19
Camila O Souza, Alexandre A S Teixeira, Luana A Biondo, Edson A Lima, Helena A P Batatinha, Jose C Rosa Neto
BACKGROUND: Palmitoleic acid, since described as lipokine, increases glucose uptake by modulation of 5'AMP-activated protein kinase (AMPK), as well as increasing lipolysis by activation of peroxisome proliferator-activated receptor-α (PPARα), in adipose tissue. However in liver, the effects of palmitoleic acid on glucose metabolism and the role of PPARα remain unknown. OBJECTIVE: To investigate whether palmitoleic acid improved the hepatic insulin sensitivity of obese mice...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27924946/the-juvenile-hafnium-isotope-signal-as-a-record-of-supercontinent-cycles
#20
Nicholas J Gardiner, Christopher L Kirkland, Martin J Van Kranendonk
Hf isotope ratios measured in igneous zircon are controlled by magmatic source, which may be linked to tectonic setting. Over the 200-500 Myr periodicity of the supercontinent cycle - the principal geological phenomenon controlling prevailing global tectonic style - juvenile Hf signals, i.e. most radiogenic, are typically measured in zircon from granites formed in arc settings (crustal growth), and evolved zircon Hf signals in granites formed in continent-collision settings (crustal reworking). Interrogations of Hf datasets for excursions related to Earth events commonly use the median value, however this may be equivocal due to magma mixing...
December 7, 2016: Scientific Reports
keyword
keyword
4275
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"