96 research outputs found
Noninducibility in postinfarction ventricular tachycardia as an end point for ventricular tachycardia ablation and its effects on outcomes: a meta-analysis
No full textBACKGROUND: Although ventricular tachycardia (VT) ablation is a widely used therapy for patients with VT, the ideal end points for this procedure are not well defined. We performed a meta-analysis of the published literature to assess the predictive value of noninducibility of postinfarction VT for long-term outcomes after VT ablation. METHODS AND RESULTS: We performed a systematic review of MEDLINE (1950-2013), EMBASE (1988-2013), the Cochrane Controlled Trials Register (Fourth Quarter, 2012), and reports presented at scientific meetings (1994-2013). Randomized controlled trials, case-control, and cohort studies of VT ablation were included. Outcomes reported in eligible studies were freedom from VT/ventricular fibrillation and all-cause mortality. Of the 3895 studies evaluated, we identified 8 cohort studies enrolling 928 patients for the meta-analysis. Noninducibility after VT ablation was associated with a significant increase in arrhythmia-free survival compared with partial success (odds ratio, 0.49; 95% confidence interval, 0.29-0.84; P=0.009) or failed ablation procedure (odds ratio, 0.10; 95% confidence interval, 0.06-0.18; P<0.001). There was also a significant reduction in all-cause mortality if patients were noninducible after VT ablation compared with patients with partial success (odds ratio, 0.59; 95% confidence interval, 0.36-0.98; P=0.04) or failed ablation (odds ratio, 0.32; 95% confidence interval, 0.10-0.99; P=0.049). CONCLUSIONS: Noninducibility of VT after VT ablation is associated with improved arrhythmia-free survival and all-cause mortality
Climate Dynamics: A Network-Based Approach for the Analysis of Global Precipitation
No full textPrecipitation is one of the most important meteorological variables for defining the climate dynamics, but the spatial patterns of precipitation have not been fully investigated yet. The complex network theory, which provides a robust tool to investigate the statistical interdependence of many interacting elements, is used here to analyze the spatial dynamics of annual precipitation over seventy years (1941-2010). The precipitation network is built associating a node to a geographical region, which has a temporal distribution of precipitation, and identifying possible links among nodes through the correlation function. The precipitation network reveals significant spatial variability with barely connected regions, as Eastern China and Japan, and highly connected regions, such as the African Sahel, Eastern Australia and, to a lesser extent, Northern Europe. Sahel and Eastern Australia are remarkably dry regions, where low amounts of rainfall are uniformly distributed on continental scales and small-scale extreme events are rare. As a consequence, the precipitation gradient is low, making these regions well connected on a large spatial scale. On the contrary, the Asiatic South-East is often reached by extreme events such as monsoons, tropical cyclones and heat waves, which can all contribute to reduce the correlation to the short-range scale only. Some patterns emerging between mid-latitude and tropical regions suggest a possible impact of the propagation of planetary waves on precipitation at a global scale. Other links can be qualitatively associated to the atmospheric and oceanic circulation. To analyze the sensitivity of the network to the physical closeness of the nodes, short-term connections are broken. The African Sahel, Eastern Australia and Northern Europe regions again appear as the supernodes of the network, confirming furthermore their long-range connection structure. Almost all North-American and Asian nodes vanish, revealing that extreme events can enhance high precipitation gradients, leading to a systematic absence of long-range patterns
Darstellendes und wirksames Handeln bei Schleiermacher zur Rezeption seines Predigtverständnisses bei F. Niebergall und W. Jetter
No full textApplication of remote accounting projects when teaching mathematics
No full textThe author presents the information dynamic system of monitoring the educational projects. It has been being applied for the organization of mathematics distance learning. The main features of this information system and the methodical aspects concerning its using at implementation of accounting projects while learning mathematics are considered
A Network Analysis of Countries’ Export Flows: Firm Grounds for the Building Blocks of the Economy
No full textIn this paper we analyze the bipartite network of countries and products from UN data on country production. We define the country-country and product-product projected networks and introduce a novel method of filtering information based on elements’ similarity. As a result we find that country clustering reveals unexpected socio-geographic links among the most competing countries. On the same footings the products clustering can be efficiently used for a bottom-up classification of produced goods. Furthermore we mathematically reformulate the “reflections method” introduced by Hidalgo and Hausmann as a fixpoint problem; such formulation highlights some conceptual weaknesses of the approach. To overcome such an issue, we introduce an alternative methodology (based on biased Markov chains) that allows to rank countries in a conceptually consistent way. Our analysis uncovers a strong non-linear interaction between the diversification of a country and the ubiquity of its products, thus suggesting the possible need of moving towards more efficient and direct non-linear fixpoint algorithms to rank countries and products in the global market.</p
Selection of the Best of 2016 in Catheter Ablation
No full textDepto. de MedicinaFac. de MedicinaFALSEpu
Interventionelle Therapie von Herzrhythmusstörungen Lehratlas zur klinischen Elektrophysiologie, Katheterablation, und Elektrotherapie ; 30 Tabellen
No full textHave MADIT and Recent Post Myocardial Infarction Amiodarone Studies Changed the Classical Indications for ICD Implantation?
No full textCommander Gordiy Vrotnovskyi, Alias ‘Gordiyenko’ (‘Varva’), in the Ukrainian Insurgent Movement
No full textУ статті вперше ґрунтовно відтворено життєпис одного з перших командирів УПА Гордія Вротновського-‘Гордієнка’, ‘Варви’, який у 1943—1944 рр. командував відділами на теренах ВО «Богун» (Волинь) і ВО «Башта» (Львів), прославився ризикованими рейдами в центральні області України та переможними боями з німецькими частинами та радянськими партизанами. Крім того, проаналізовано бойові операції підрозділів під керівництвом Г. Вротновського та встановлено їх правдоподібний перебіг, результати, а також хронологічні рамки й маршрути рейдів.In this article the author for the first time thoroughly reconstructed the
biography of one of the first UPA commanders Gordiy Vrotnovskyi, alias
‘Gordiyenko’, ‘Varva’, who in 1943—1944 was in charge of units on the
areas of “Bogun” (Volhynia) and “Bashta” (Lviv) UPA military districts,
and became famous for his adventurous raids to Central Ukraine and
victorious combats with the German troops and the Soviet partisans.
In addition, G. Vrotnovkyi units’ combat operations were analysed, and
their real course and outcomes as well as timeline and routs of raids were
established
- …
