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https://www.readbyqxmd.com/read/28224933/inadequacy-of-existing-clinical-prediction-models-for-predicting-mortality-after-transcatheter-aortic-valve-implantation
#1
Glen P Martin, Matthew Sperrin, Peter F Ludman, Mark A de Belder, Chris P Gale, William D Toff, Neil E Moat, Uday Trivedi, Iain Buchan, Mamas A Mamas
BACKGROUND: The performance of emerging transcatheter aortic valve implantation (TAVI) clinical prediction models (CPMs) in national TAVI cohorts distinct from those where they have been derived is unknown. This study aimed to investigate the performance of the German Aortic Valve, FRANCE-2, OBSERVANT and American College of Cardiology (ACC) TAVI CPMs compared with the performance of historic cardiac CPMs such as the EuroSCORE and STS-PROM, in a large national TAVI registry. METHODS: The calibration and discrimination of each CPM were analyzed in 6676 patients from the UK TAVI registry, as a whole cohort and across several subgroups...
February 2017: American Heart Journal
https://www.readbyqxmd.com/read/28214795/pre-implantation-balloon-aortic-valvuloplasty-and-clinical-outcomes-following-transcatheter-aortic-valve-implantation-a-propensity-score-analysis-of-the-uk-registry
#2
Glen P Martin, Matthew Sperrin, Rodrigo Bagur, Mark A de Belder, Iain Buchan, Mark Gunning, Peter F Ludman, Mamas A Mamas
BACKGROUND: Aortic valve predilation with balloon aortic valvuloplasty (BAV) is recommended before transcatheter aortic valve implantation (TAVI), despite limited data around the requirement of this preprocedural step and the potential risks of embolization. This study aimed to investigate the trends in practice and associations of BAV on short-term outcomes in the UK TAVI registry. METHODS AND RESULTS: Eleven clinical endpoints were investigated, including 30-day mortality, myocardial infarction, aortic regurgitation, valve dysfunction, and composite early safety...
February 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28198953/predictors-of-hope-among-women-with-breast-cancer-during-chemotherapy
#3
Alessandra Cristina Sartore Balsanelli, Sonia Aurora Alves Grossi
OBJECTIVE: Identifying the predictors of hope in patients with breast cancer during chemotherapy treatment. METHOD: A prospective longitudinal study. The sample was composed of 122 women who responded to the instruments of hope, anxiety and depression, coping, fatigue, religiosity and self-esteem in the first and last cycle of chemotherapy. These variables were used in adjusting the logistic regression model that characterized multivariate statistics, allowing identification of predictor variables...
November 2016: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/28198913/body-composition-in-patients-with-crohn-s-disease-and-ulcerative-colitis
#4
Ivi Ribeiro Back, Sonia Silva Marcon, Natalia Moreno Gaino, Daniela Salate Biagioni Vulcano, Mariana de Souza Dorna, Ligia Yukie Sassaki
BACKGROUND: The nutritional status of individuals with inflammatory bowel diseases is directly related to the severity of the disease and is associated with poor prognosis and the deterioration of immune competence. OBJECTIVE: To assess the nutritional status and the body composition of outpatients with inflammatory bowel diseases. METHODS: A cross-sectional study was conducted with clinical and nutritional assessment of patients with Crohn's disease and ulcerative colitis...
February 13, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28196898/increased-radial-access-is-not-associated-with-worse-femoral-outcomes-for-percutaneous-coronary-intervention-in-the-united-kingdom
#5
William Hulme, Matthew Sperrin, Evangelos Kontopantelis, Karim Ratib, Peter Ludman, Alex Sirker, Tim Kinnaird, Nick Curzen, Chun Shing Kwok, Mark De Belder, James Nolan, Mamas A Mamas
BACKGROUND: The radial artery is increasingly adopted as the primary access site for cardiac catheterization because of patient preference, lower bleeding rates, cost effectiveness, and reduced risk of mortality in high-risk patient groups. Concerns have been expressed that operators/centers have become increasingly unfamiliar with transfemoral access. The aim of this study was to assess whether a change in access site practice toward transradial access nationally has led to worse outcomes in percutaneous coronary intervention procedures performed through the transfemoral access approach...
February 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28163831/endothelial-progenitor-cells-exploring-the-pleiotropic-effects-of-statins
#6
REVIEW
Kully Sandhu, Mamas Mamas, Robert Butler
Statins have become a cornerstone of risk modification for ischaemic heart disease patients. A number of studies have shown that they are effective and safe. However studies have observed an early benefit in terms of a reduction in recurrent infarct and or death after a myocardial infarction, prior to any significant change in lipid profile. Therefore, pleiotropic mechanisms, other than lowering lipid profile alone, must account for this effect. One such proposed pleiotropic mechanism is the ability of statins to augment both number and function of endothelial progenitor cells...
January 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28160034/the-effects-of-synthetic-cannabinoids-on-executive-function
#7
K Cohen, M Kapitány-Fövény, Y Mama, M Arieli, P Rosca, Z Demetrovics, A Weinstein
BACKGROUND AND AIMS: There is a growing use of novel psychoactive substances (NPSs) including synthetic cannabinoids. Synthetic cannabinoid products have effects similar to those of natural cannabis but the new synthetic cannabinoids are more potent and dangerous and their use has resulted in various adverse effects. The purpose of the study was to assess whether persistent use of synthetic cannabinoids is associating with impairments of executive function in chronic users. METHODS: A total of 38 synthetic cannabinoids users, 43 recreational cannabis users, and 41 non-user subjects were studied in two centers in Hungary and Israel...
February 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28154542/the-modified-abbreviated-math-anxiety-scale-a-valid-and-reliable-instrument-for-use-with-children
#8
Emma Carey, Francesca Hill, Amy Devine, Dénes Szűcs
Mathematics anxiety (MA) can be observed in children from primary school age into the teenage years and adulthood, but many MA rating scales are only suitable for use with adults or older adolescents. We have adapted one such rating scale, the Abbreviated Math Anxiety Scale (AMAS), to be used with British children aged 8-13. In this study, we assess the scale's reliability, factor structure, and divergent validity. The modified AMAS (mAMAS) was administered to a very large (n = 1746) cohort of British children and adolescents...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28154142/dissecting-the-proton-transport-pathway-in-electrogenic-na-h-antiporters
#9
Povilas Uzdavinys, Mathieu Coinçon, Emmanuel Nji, Mama Ndi, Iven Winkelmann, Christoph von Ballmoos, David Drew
Sodium/proton exchangers of the SLC9 family mediate the transport of protons in exchange for sodium to help regulate intracellular pH, sodium levels, and cell volume. In electrogenic Na(+)/H(+) antiporters, it has been assumed that two ion-binding aspartate residues transport the two protons that are later exchanged for one sodium ion. However, here we show that we can switch the antiport activity of the bacterial Na(+)/H(+) antiporter NapA from being electrogenic to electroneutral by the mutation of a single lysine residue (K305)...
February 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28153284/glucose-sensing-on-graphite-screen-printed-electrode-modified-by-sparking-of-copper-nickel-alloys
#10
Daniel Riman, Konstantinos Spyrou, Alexandros E Karantzalis, Jan Hrbac, Mamas I Prodromidis
Electric spark discharge was employed as a green, fast and extremely facile method to modify disposable graphite screen-printed electrodes (SPEs) with copper, nickel and mixed copper/nickel nanoparticles (NPs) in order to be used as nonenzymatic glucose sensors. Direct SPEs-to-metal (copper, nickel or copper/nickel alloys with 25/75, 50/50 and 75/25wt% compositions) sparking at 1.2kV was conducted in the absence of any solutions under ambient conditions. Morphological characterization of the sparked surfaces was performed by scanning electron microscopy, while the chemical composition of the sparked NPs was evaluated with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy...
April 1, 2017: Talanta
https://www.readbyqxmd.com/read/28141712/significant-sleep-dysregulation-in-a-toddler-with-developmental-delay
#11
Martin T Stein, Judith Owens, Myles Abbott
Derrick's parents made an appointment with a new pediatrician for a second opinion about disordered sleep. Now 22-months old, he was evaluated at 18 months of age for developmental delay when he was found to have "a regulatory disorder associated with delays in language and motor development, hypotonia and significant sleep problems." The parents are now most concerned about his sleeping pattern. Prolonged sleep onset and frequent night awaking occur each night since 6-months of age. These problems are more severe in the past few months when he awakes screaming and cannot be settled...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28137330/impact-of-hiv-on-inpatient-mortality-and-complications-in-stroke-in-thailand-a-national-database-study
#12
K Cumming, S Tiamkao, K Kongbunkiat, A B Clark, J H Bettencourt-Silva, K Sawanyawisuth, N Kasemsap, M A Mamas, J A Seeley, P K Myint
The co-existence of stroke and HIV has increased in recent years, but the impact of HIV on post-stroke outcomes is poorly understood. We examined the impact of HIV on inpatient mortality, length of acute hospital stay and complications (pneumonia, respiratory failure, sepsis and convulsions), in hospitalized strokes in Thailand. All hospitalized strokes between 1 October 2004 and 31 January 2013 were included. Data were obtained from a National Insurance Database. Characteristics and outcomes for non-HIV and HIV patients were compared and multivariate logistic and linear regression models were constructed to assess the above outcomes...
January 31, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28125312/cachexia-at-diagnosis-is-associated-with-poor-survival-in-head-and-neck-cancer-patients
#13
Helena Orell-Kotikangas, Pia Österlund, Outi Mäkitie, Kauko Saarilahti, Paula Ravasco, Ursula Schwab, Antti A Mäkitie
CONCLUSIONS: One third of the patients had cachexia with an association of significantly shorter survival. These results suggest that combining HGS and MAMA seems to be a practical method to screen cachexia in patients with head and neck cancer and may also be used when assessing their prognosis. OBJECTIVES: The aim of this study was to analyze the hypothesis that cachexia defined as both low mid-arm muscle area (MAMA) and handgrip strength (HGS) is associated with decreased survival in patients with head and neck squamous cell carcinoma (HNSCC)...
January 26, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28121186/goldmann-applanation-tonometry-versus-dynamic-contour-tonometry-after-vitrectomy-with-silicone-oil-endotamponade
#14
Matthias Fuest, Nikolaos Mamas, Peter Walter, Babac E Mazinani, Gemot Roessler, Niklas Plange
PURPOSE: To evaluate the agreement of intraocular pressure (IOP) measurements using dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in eyes after vitrectomy with silicone oil endotamponade and controls. METHODS: In this prospective comparative study, IOP was measured with GAT and DCT in 30 eyes with oil endotamponade 1-3 days after vitrectomy and 40 untreated controls. In addition, ocular pulse amplitude (OPA), corneal pachymetry (CCT), and axial length (AL) were measured...
January 25, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28095413/one-month-global-longitudinal-strain-identifies-patients-who-will-develop-pacing-induced-left-ventricular-dysfunction-over-time-the-pacing-and-ventricular-dysfunction-pavd-study
#15
Fozia Zahir Ahmed, Manish Motwani, Colin Cunnington, Chun Shing Kwok, Catherine Fullwood, Delvac Oceandy, Alan Fitchet, Grahame Kevin Goode, Matthew Luckie, Amir Masood Zaidi, Rajdeep Khattar, Mamas Andreas Mamas
BACKGROUND: Predicting which individuals will have a decline in left ventricular (LV) function after pacemaker implantation remains an important challenge. We investigated whether LV global longitudinal strain (GLS), measured by 2D speckle tracking strain echocardiography, can identify patients at risk of pacing-induced left ventricular dysfunction (PIVD) or pacing-induced cardiomyopathy (PICMP). METHODS: Fifty-five patients with atrioventricular block and preserved LV function underwent dual-chamber pacemaker implantation and were followed with serial transthoracic echocardiography for 12 months for the development of PIVD (defined as a reduction in LV ejection fraction (LVEF) ≥5 percentage points at 12 months) or PICMP (reduction in LVEF to <45%)...
2017: PloS One
https://www.readbyqxmd.com/read/28087142/ultrastructural-characteristics-of-the-mature-spermatozoon-of-the-digenean-sclerodistomum-italicum-stossich-1893-hemiuroidea-sclerodistomidae-intestinal-parasite-of-hypocanthus-amia-teleostei-carangidae
#16
Papa Ibnou Ndiaye, Yann Quilichini, Adji Mama Marigo, Cheikh Tidiane Bâ, Vasyl V Tkach, Bernard Marchand
The mature spermatozoon of Sclerodistomum italicum is filiform, tapered at both ends and shows the following features: 2 axonemes of the 9+"1" pattern of the Trepaxonemata, mitochondrion, nucleus and parallel cortical microtubules. The specific features of the spermatozoon of S. italicum include the simultaneous presence of two types of extramembranous ornamentations, the presence of short cortical microtubules in the anterior part of the spermatozoon and the presence of only one bundle of cortical microtubules in the median part of the spermatozoon...
December 30, 2016: Tissue & Cell
https://www.readbyqxmd.com/read/28086814/intestinal-helminth-co-infection-and-associated-factors-among-tuberculosis-patients-in-arba-minch-ethiopia
#17
Getaneh Alemu, Mohammedaman Mama
BACKGROUND: Helminths affect the outcome of tuberculosis by shifting cell mediated immune response to humoral and by total suppression of the host immune system. On the reverse, Mycobacterium infection favors immune escape of helminths. Therefore assessing helminth co-infection rate and predisposing factors in tuberculosis patients is mandatory to set strategies for better case management. METHODS: Facility based cross-sectional study was conducted in Arba Minch to assess the prevalence and associated factors of intestinal helminths among pulmonary tuberculosis patients from January to August, 2016...
January 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28074617/soft-drink-intake-and-the-risk-of-metabolic-syndrome-a%C3%A2-systematic-review-and-meta-analysis
#18
REVIEW
Aditya Narain, Chun Shing Kwok, Mamas A Mamas
BACKGROUND: It is unclear whether consumption of sugar- or artificially sweetened beverages is independently associated with the development of metabolic syndrome. A systematic review and meta-analysis was performed to evaluate whether soft drink consumption is associated with the development of metabolic syndrome. METHODS: Medline and EMBASE were searched in November 2015 for studies which considered soft drink (sugar-sweetened beverage [SSB] and artificially sweetened beverage [ASB]) intake and risk of metabolic syndrome...
January 10, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28056835/clinical-prediction-in-defined-populations-a-simulation-study-investigating-when-and-how-to-aggregate-existing-models
#19
Glen P Martin, Mamas A Mamas, Niels Peek, Iain Buchan, Matthew Sperrin
BACKGROUND: Clinical prediction models (CPMs) are increasingly deployed to support healthcare decisions but they are derived inconsistently, in part due to limited data. An emerging alternative is to aggregate existing CPMs developed for similar settings and outcomes. This simulation study aimed to investigate the impact of between-population-heterogeneity and sample size on aggregating existing CPMs in a defined population, compared with developing a model de novo. METHODS: Simulations were designed to mimic a scenario in which multiple CPMs for a binary outcome had been derived in distinct, heterogeneous populations, with potentially different predictors available in each...
January 6, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28035491/cancer-event-rate-and-mortality-with-thienopyridines-a-systematic-review-and-meta-analysis
#20
REVIEW
Rafail Angelos Kotronias, Chun Shing Kwok, Chun Wai Wong, Tim Kinnaird, Azfar Zaman, Mamas A Mamas
INTRODUCTION: Thienopyridines are a class of antiplatelet drugs widely used in cardiovascular disease prevention and treatment. A recent concern has come to light regarding the safety of thienopyridines because of the possible risk of malignancy. We therefore performed a systematic review and meta-analysis to evaluate the association between thienopyridine exposure and malignancy. METHODS: We searched the MEDLINE and EMBASE databases in March 2016 for studies that evaluated incident cancer and cancer mortality with and without exposure to thienopyridines...
December 29, 2016: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
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