radial

An almost radial gauge $A^\mathrm{ar}$ of the electromagnetic potential is constructed for which $x\cdot A^\mathrm{ar}(x)$ vanishes arbitrarily fast in timelike directions. This class introduced by Dirac with purpose forming gauge-invariant quantities quantum electrodynamics. In case construction smeared operators $A^\mathrm{ar}(K)$ enabled a natural extension free field algebra earlier (repres...

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[Radial artery spasm in transradial cardiac catheterization. Assessment of factors related to its occurrence, and of its consequences during follow-up].

Journal: :Revista espanola de cardiologia 2005

Rafael J Ruiz-Salmerón Ramón Mora Manuel Vélez-Gimón José Ortiz Carlos Fernández Bárbara Vidal Mónica Masotti Amadeo Betriu

INTRODUCTION AND OBJECTIVES Radial artery spasm is the most frequent complication of transradial cardiac catheterization. It causes patient discomfort and reduces the procedure's success rate. The aims of this study were to identify variables associated with this complication, such as clinical parameters, angiographic characteristics of the radial artery and factors related to the procedure, an...

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[Radial artery spasm in transradial cardiac catheterization. Assessment of factors related to its occurrence, and of its consequences during follow-up].