BACKGROUND A previous retrospective study by our group suggested that shocks timed to the upslope of the shocking lead electrogram improved defibrillation efficacy. The goal of this study was to prospectively determine whether defibrillation threshold could be reduced by use of an algorithm that timed shocks to the upslope of coarse ventricular fibrillation (test treatment) compared with shocks...

The effect of gravitational radiation reaction on orbits around a spinning black hole is analyzed. Such orbits possess three constants of motion: i , e , and a , which correspond, in the Newtonian limit of the orbit being an ellipse, to the inclination angle of the orbital plane to the hole’s equatorial plane, the eccentricity, and the semimajor axis length, respectively. First, it is argued th...

Organic-rich soil is a typical special often encountered in foundation treatment. Previous research has revealed that Portland cement (PC) not only pollutes the environment but significantly affected by organic matter during its hydration and cementation. Although quicklime (CaO)-GGBS binder (CG) an effective alternative to PC, efficiency treating organic-rich soils been studied. In this study,...

OBJECTIVES The effect of implantable cardioverter/defibrillator (ICD) lead placement in the right ventricle (RV) on defibrillation efficacy has not been thoroughly investigated. Therefore, the goal of this combined experimental and clinical study was to evaluate the effect of a septal and a non-septal position of the right ventricular endocardial spring lead on defibrillation energy. METHODS ...

Background: There is controversy whether management of blood cholesterol should be based or not on LDL-cholesterol (LDL-c) target concentrations. Objectives: To compare the estimated impact of different lipid-lowering strategies, based or not on LDL-c targets, on the risk of major cardiovascular events in a population with higher cardiovascular risk. Methods: We included consecutive individ...

1. Peidro R, Froelicher V, Stein R. Triagem pré-participação do atleta jovem: é essa a hora para um consenso? Arq Bras Cardiol. 2011;96(3):e50-e52. 2. Matos LDNJ, Pastore CA, Samesima N, Franco FGM. Alterações do eletrocardiograma de repouso com o treinamento físico. In: Negrão CE, Barretto ACP, ed. Cardiologia do exercício: do atleta ao cardiopata. 3aed. São Paulo: Editora Manole; 2010. p. 177...

Landscape topography is the expression of the dynamic equilibrium between external forcings (for example, climate and tectonics) and the underlying lithology. The magnitude and spatial arrangement of erosional and depositional fluxes dictate the evolution of landforms during both statistical steady state (SS) and transient state (TS) of major landscape reorganization. For SS landscapes, the com...

Lotteries are introduced into Cavalcanti and Erosa (2008) [2], a version of Trejos and Wright (1995) [4] with aggregate shocks. Lotteries improve welfare and eliminate the two notable features of the optimum with deterministic trades: over-production and history-dependence. Moreover, the optimum can be supported by buyer take-it-or-leave-it offers. © 2011 Elsevier Inc. All rights reserved. JEL ...