Abstract
Introduction: transseptal (TS) puncture is required for a number of procedures in the left atrium (LA) or ventricle. Aim of this study is to assess efficacy and safety of a modified TS puncture technique using the stylet to cross the septum, taking advantage of its smaller cross sectional area (Fig. 1), and allowing smooth advancement of the needle over the stylet, avoiding perforation due to jumps related to excessive pressure of the TS-system.
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