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https://www.readbyqxmd.com/read/28819711/measurement-invariance-the-lack-thereof-and-modeling-change
#1
Michael C Edwards, Carrie R Houts, R J Wirth
PURPOSE: Measurement invariance issues should be considered during test construction. In this paper, we provide a conceptual overview of measurement invariance and describe how the concept is implemented in several different statistical approaches. Typical applications look for invariance over things such as mode of administration (paper and pencil vs. computer based), language/translation, age, time, and gender, to cite just a few examples. To the extent that the relationships between items and constructs are stable/invariant, we can be more confident in score interpretations...
August 17, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28819363/combined-analysis-of-endothelial-hematopoietic-and-mesenchymal-stem-cell-compartments-shows-simultaneous-but-independent-effects-of-age-and-heart-disease
#2
Carine Ghem, Lucinara Dadda Dias, Roberto Tofani Sant'Anna, Renato A K Kalil, Melissa Markoski, Nance Beyer Nardi
Clinical trials using stem cell therapy for heart diseases have not reproduced the initial positive results obtained with animal models. This might be explained by a decreased regenerative capacity of stem cells collected from the patients. This work aimed at the simultaneous investigation of endothelial stem/progenitor cells (EPCs), mesenchymal stem/progenitor cells (MSCs), and hematopoietic stem/progenitor cells (HSCs) in sternal bone marrow samples of patients with ischemic or valvular heart disease, using flow cytometry and colony assays...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28816395/cultural-adaptation-and-validation-of-the-caring-behaviors-assessment-tool-in-chile
#3
Ricardo A Ayala, María Julia Calvo
This study reports the process of cultural adaptation of the Caring Behaviors Assessment tool for the Spanish language, and determine its validity and reliability. We used a mixed-methods approach with a sample of adult participants after translation and adjustment, correlations and multiple regressions were used to explain differences in perception. Internal consistency and reliability were determined by using Cronbach's alpha. While slight modifications to syntax, language, and the interval scale were necessary to enable better comprehension, all items had high average scores as did the seven subscales...
August 17, 2017: Nursing & Health Sciences
https://www.readbyqxmd.com/read/28806185/graft-quality-verification-in-coronary-artery-bypass-graft-surgery-how-when-and-why
#4
Teresa M Kieser
PURPOSE OF REVIEW: The coronary artery bypass graft (CABG) operation is one of the few remaining operations/interventions on diseased arteries that are not routinely verified during or immediately after the procedure. This review answers the 'how', 'when' and 'why' of intraoperative CABG assessment. RECENT FINDINGS: More recent than new literature on this topic, is the increased interest in quality assurance of CABG. This is most likely due to reports in the last 5 years suggesting CABG superiority to percutaneous coronary intervention (PCI) for improved mid-term and long-term outcomes; for example, for patients with diabetes mellitus (Freedom Trial by Farkouh in 2012), and for patients with SYNTAX score ≥ 33 (SYNTAX Trial by Mohr in 2013)...
August 12, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28803212/data-driven-classification-of-patients-with-primary-progressive-aphasia
#5
Paul Hoffman, Seyed Ahmad Sajjadi, Karalyn Patterson, Peter J Nestor
Current diagnostic criteria classify primary progressive aphasia into three variants-semantic (sv), nonfluent (nfv) and logopenic (lv) PPA-though the adequacy of this scheme is debated. This study took a data-driven approach, applying k-means clustering to data from 43 PPA patients. The algorithm grouped patients based on similarities in language, semantic and non-linguistic cognitive scores. The optimum solution consisted of three groups. One group, almost exclusively those diagnosed as svPPA, displayed a selective semantic impairment...
August 10, 2017: Brain and Language
https://www.readbyqxmd.com/read/28789845/discrepancy-between-fractional-flow-reserve-and-instantaneous-wave-free-ratio-clinical-and-angiographic-characteristics
#6
Joo Myung Lee, Eun-Seok Shin, Chang-Wook Nam, Joon-Hyung Doh, Doyeon Hwang, Jonghanne Park, Kyung-Jin Kim, Jinlong Zhang, Bon-Kwon Koo
BACKGROUND: The invasive physiologic index such as fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR) is used in clinical practice to identify ischemia-causing stenosis and to guide treatment strategy. We investigated clinical and angiographic characteristics of lesions with discrepancy between FFR and iFR. METHODS: From the 3V FFR-FRIENDS study, 975 vessels (393 patients) with available pre-intervention FFR and iFR were included in this study...
August 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28789844/impact-of-coronary-artery-disease-in-patients-undergoing-transfemoral-transcatheter-aortic-valve-implantation
#7
Jasmin Shamekhi, Anja Stundl, Marcel Weber, Fritz Mellert, Armin Welz, Eberhard Grube, Georg Nickenig, Nikos Werner, Jan-Malte Sinning
BACKGROUND: The impact of coronary artery disease (CAD) and revascularization on outcome in patients undergoing transcatheter aortic valve implantation (TAVI) has not been fully elucidated so far. OBJECTIVES: To assess whether the degree of CAD influences the prognosis of patients undergoing TAVI. METHODS: Before TAVI, all patients underwent revascularization of the proximal vessels or the left main stem if indicated (stenosis ≥70% or 50%, respectively)...
July 25, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28780509/rehospitalizations-following-primary-percutaneous-coronary-intervention-in-patients-with-st-elevation-myocardial-infarction-results-from-a-multi-center-randomized-trial
#8
Ernest Spitzer, Martina Frei, Serge Zaugg, Susanne Hadorn, Henning Kelbaek, Miodrag Ostojic, Andreas Baumbach, David Tüller, Marco Roffi, Thomas Engstrom, Giovanni Pedrazzini, Vladan Vukcevic, Michael Magro, Ran Kornowski, Thomas F Lüscher, Clemens von Birgelen, Dik Heg, Stephan Windecker, Lorenz Räber
BACKGROUND: Rehospitalizations (RHs) after ST-elevation myocardial infarction carry a high economic burden and may deteriorate quality of life. Characterizing patients at higher risk may allow the design of preventive measures. We studied the frequency, reasons, and predictors for unplanned cardiac and noncardiac RHs in ST-elevation myocardial infarction patients undergoing primary percutaneous coronary intervention. METHODS AND RESULTS: In this post-hoc analysis of the COMFORTABLE AMI (Comparison of Biolimus Eluted From an Erodible Stent Coating With Bare Metal Stents in Acute ST-Elevation Myocardial Infarction; NCT00962416) trial including 1137 patients, unplanned cardiac and noncardiac RHs occurred in 133 (11...
August 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28774187/mean-platelet-volume-to-lymphocyte-ratio-as-a-novel-marker-for-severity-and-complexity-of-coronary-atherosclerosis-in-patients-with-acute-coronary-syndrome
#9
Alparslan Kilic, Alparslan Kurtul
The thromboinflammatory process plays an important role in the pathophysiology of acute coronary syndrome (ACS). Recently, the mean platelet volume-to-lymphocyte ratio (MPVLR) has been suggested as a prognostic marker in patients with ACS. We assessed the association of MPVLR with the severity and complexity of coronary atherosclerosis in patients with ACS. A total of 1782 patients undergoing urgent coronary angiography were enrolled. The SYNTAX score (SXscore) was calculated for each patient. Patients were divided into 2 groups: low SXscore (<23) and intermediate-to-high SXscore (≥23)...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28771550/gdf-15-predicts-cardiovascular-events-in-acute-chest-pain-patients
#10
Stergios Tzikas, Lars Palapies, Constantinos Bakogiannis, Tanja Zeller, Christoph Sinning, Stephan Baldus, Christoph Bickel, Vassilios Vassilikos, Karl J Lackner, Andreas Zeiher, Thomas Münzel, Stefan Blankenberg, Till Keller
BACKGROUND: Treatment of patients presenting with possible acute myocardial infarction (AMI) is based on timely diagnosis and proper risk stratification aided by biomarkers. We aimed at evaluating the predictive value of GDF-15 in patients presenting with symptoms suggestive of AMI. METHODS: Consecutive patients presenting with suspected AMI were enrolled in three study centers. Cardiovascular events were assessed during a follow-up period of 6 months with a combined endpoint of death or MI...
2017: PloS One
https://www.readbyqxmd.com/read/28770620/oxidative-stress-and-syntax-score-in-patients-with-stable-coronary-artery-disease
#11
Selami Soylemez
Letter in regards to: Akboga MK, Balci KG, Maden O et al. Usefulness of monocyte to HDL-cholesterol ratio to predict high SYNTAX score in patients with stable coronary artery disease. Biomark. Med. 10(4), 375-383 (2016).
August 3, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28770617/oxidative-stress-biomarkers-and-burden-of-coronary-atherosclerosis-assessed-based-on-syntax-score
#12
Mehmet Kadri Akboga, Samet Yilmaz
Letter in regards to: Akboga MK, Balci KG, Maden O et al. Usefulness of monocyte to HDL-cholesterol ratio to predict high SYNTAX score in patients with stable coronary artery disease. Biomark. Med. 10(4), 375-383 (2016). In response to: Soylemez S.Oxidative stress and SYNTAX score in patients with stable coronary artery disease. Biomark. Med. 11(8), doi:10.2217/bmm-2016-0326 (2017) (Epub ahead of print).
August 3, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28760723/impact-of-residual-syntax-score-on-clinical-outcomes-after-incomplete-revascularization-percutaneous-coronary-intervention-a-large-single-centre-study
#13
Ying Song, Zhan Gao, Xiaofang Tang, Ping Jiang, Jingjing Xu, Yi Yao, Jianxin Li, Xueyan Zhao, Shubin Qiao, Yuejin Yang, Runlin Gao, Bo Xu, Jinqing Yuan
AIMS: This study assessed the prognostic capacity of residual SYNTAX score (rSS) in a large cohort of patients undergoing percutaneous coronary intervention(PCI) in clinical practice. METHODS AND RESULTS: 10,344 consecutive patients were prospectively enrolled. Complete revascularization (CR; rSS=0), reasonable incomplete revascularization (RICR; 0 < rSS ≤ 8), and ICR (rSS > 8) were achieved in 5375 (51.9%), 3401 (32.9%), and 1568 (15.2%) patients. During 2-year follow-up, ICR patients had the highest incidences of major adverse cardiovascular and cerebrovascular events (MACCE; 20...
August 1, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28760214/clinical-outcomes-with-percutaneous-coronary-revascularization-vs-coronary-artery-bypass-grafting-surgery-in-patients-with-unprotected-left-main-coronary-artery-disease-a-meta-analysis-of-6-randomized-trials-and-4-686-patients
#14
REVIEW
Tullio Palmerini, Patrick Serruys, Arie Pieter Kappetein, Philippe Genereux, Diego Della Riva, Letizia Bacchi Reggiani, Evald Christiansen, Niels R Holm, Leif Thuesen, Timo Makikallio, Marie Claude Morice, Jung-Min Ahn, Seung-Jung Park, Holger Thiele, Enno Boudriot, Mario Sabatino, Mattia Romanello, Giuseppe Biondi-Zoccai, Raphael Cavalcante, Joseph F Sabik, Gregg W Stone
Some but not all randomized controlled trials (RCT) have suggested that percutaneous coronary intervention (PCI) with drug-eluting stents may be an acceptable alternative to coronary artery bypass grafting (CABG) surgery for the treatment of unprotected left main coronary artery disease (ULMCAD). We therefore aimed to compare the risk of all-cause mortality between PCI and CABG in patients with ULMCAD in a pairwise meta-analysis of RCT. METHODS: Randomized controlled trials comparing PCI vs CABG for the treatment of ULMCAD were searched through MEDLINE, EMBASE, Cochrane databases, and proceedings of international meetings...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28752728/evaluation-of-on-clopidogrel-platelet-reactivity-overtime-syntax-score-genetic-polymorphisms-and-their-relationship-to-one-year-clinical-outcomes-in-stemi-patients-undergoing-pci
#15
Harsha V Erathi, Rajasekhar Durgaprasad, Vanajakshamma Velam, P V Sarma, Madhavi Rodda, C Kapil, Sreedhar N Kanavath
OBJECTIVES: To investigate the variability of On-clopidogrel platelet reactivity overtime, the association between HTPR, gene polymorphism and Syntax Score (SS) for risk prediction of MACE in patients with ST-Elevation Myocardial Infarction (STEMI) undergoing percutaneous coronary intervention (PCI). BACKGROUND: Platelet function testing may be used to optimize antiplatelet therapy in high risk patients, but identification of this subset of patients remains a challenge...
July 27, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28750824/syntax-score-and-pre-and-poststent-optical-coherence-tomography-findings-in-the-left-anterior-descending-coronary-artery-in-patients-with-stable-angina-pectoris
#16
Krzysztof L Bryniarski, Darren L Walters, Chong-Jin Kim, Tsunenari Soeda, Takumi Higuma, Erika Yamamoto, Lei Xing, Tomoyo Sugiyama, Thomas Zanchin, Leszek Bryniarski, Dariusz Dudek, Hang Lee, Ik-Kyung Jang
SYNTAX score (SS) has been reported to be an independent predictor of future cardiac events including target lesion revascularization. The aim of this study was to assess the relation between SS and plaque characteristics and poststent vascular response using optical coherence tomography in coronary artery tree and left anterior descending artery (LAD) in patients with stable angina. A total of 179 lesions among 165 patients, including 100 lesions in LAD, were analyzed. Patients were stratified into tertiles...
June 28, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28747945/the-impact-of-type-2-diabetes-mellitus-on-prognosis-in-patients-with-non-st-elevation-myocardial-infarction
#17
REVIEW
Katarzyna Birkner, Bartosz Hudzik, Mariusz Gąsior
Type 2 diabetes (T2D) is a recognized risk factor for acute coronary syndromes. There is currently no consensus concerning the intensification of antihyperglycemic treatment. According to the available guidelines, it seems that the goal is to achieve glycated hemoglobin (HbA1c) levels below 7% and avoid hypoglycemia. The choice of a revascularization method is influenced by many factors, such as the anatomy of the coronary arteries, severity of atherosclerosis, anatomical location of lesions, and presence of comorbidities...
June 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28744901/input-and-age-dependent-variation-in-second-language-learning-a-connectionist-account
#18
Marius Janciauskas, Franklin Chang
Language learning requires linguistic input, but several studies have found that knowledge of second language (L2) rules does not seem to improve with more language exposure (e.g., Johnson & Newport, 1989). One reason for this is that previous studies did not factor out variation due to the different rules tested. To examine this issue, we reanalyzed grammaticality judgment scores in Flege, Yeni-Komshian, and Liu's (1999) study of L2 learners using rule-related predictors and found that, in addition to the overall drop in performance due to a sensitive period, L2 knowledge increased with years of input...
July 26, 2017: Cognitive Science
https://www.readbyqxmd.com/read/28738485/-impact-and-clinical-outcome-of-intra-aortic-balloon-pump-use-during-percutaneous-coronary-intervention
#19
J J Xu, Z Gao, Y Song, Y L Ma, X F Tang, Y Yao, C He, H H Wang, Y J Yang, R L Gao, S B Qiao, B Xu, J Q Yuan
Objective: To observe the impact and clinical outcome of intra-aortic balloon pump(IABP) use in patients underwent percutaneous coronary intervention (PCI). Methods: From January 2013 to December 2013, 10 724 consecutive patients undergoing PCI were enrolled.After 2 years' follow-up, the incidence of major adverse cardiovascular and cerebrovascular events such as death, myocardial infarction, stent thrombosis, revascularization, recurrent stroke were recorded, propensity score was used to match baseline data, and the clinical outcomes in patients with IABP and non-IABP were compared...
July 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28728849/lymphocyte-to-monocyte-ratio-is-an-independent-predictor-for-higher-syntax-scores-and-associated-with-adverse-events-in-acute-coronary-syndrome
#20
Selcuk Ozturk, Alparslan Kurtul
OBJECTIVES: Coronary atherosclerotic burden is associated with poor cardiovascular outcomes. The aim of this study was to investigate the relationship between lymphocyte-to-monocyte ratio (LMR) and SYNTAX score (SXs) in acute coronary syndrome (ACS) patients. MATERIAL AND METHODS: A total of 1585 patients who match the inclusion criteria were involved in the study. Peripheral blood samples were obtained from all patients within 10min upon admission to hospital from antecubital vein...
July 12, 2017: International Journal of Cardiology
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