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Modified Transseptal Puncture Technique in Challenging Septa: A Randomized Comparison to Conventional Technique

机译:挑战性隔隔的改良的经隔穿刺穿刺技术:与常规技术的随机比较

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摘要

Background. Transseptal puncture (TSP) can be challenging. We compared safety and efficacy of a modified TSP technique (“mosquito” technique, MOSQ-TSP) to conventional TSP (CONV-TSP). Method. Patients undergoing AF ablation in whom first attempt of TSP did not result in left atrial (LA) pressure (failure to cross, FTC) were randomized to MOSQ-TSP (i.e., puncture of the fossa via a wafer-thin inner stylet) or CONV-TSP (i.e., additional punctures at different positions). Primary endpoint was LA access. Secondary endpoints were safety, time, fluoroscopic dose (dose-area product, DAP), and number of additional punctures from FTC to final LA access. Result. Of 384 patients, 68 had FTC (MOSQ-TSP, n = 34 versus CONV-TSP, n = 34). No complications were reported. In MOSQ-TSP, primary endpoint was 100% (versus 73.5%, p < 0.002), median time to LA access was 72 s [from 37 to 384 s] (versus 326 s [from 75 s to 1936 s], p < 0.002), mean DAP to LA access was 1778 ± 2315 mGy/cm2 (versus 9347 ± 10690 mGy/cm2, p < 0.002), and median number of additional punctures was 2 [1 to 3] (versus 0, p < 0.002). Conclusion. In AF patients in whom the first attempt of TSP fails, the “mosquito” technique allows effective, safe, and time sparing LA access. This approach might facilitate TSP in elastic, aneurysmatic, or fibrosed septa.
机译:背景。经隔穿刺(TSP)可能具有挑战性。我们将改良的TSP技术(“蚊子”技术MOSQ-TSP)与常规TSP(CONV-TSP)的安全性和有效性进行了比较。方法。初次尝试TSP不会导致左心房(LA)压力(穿越失败,FTC)的AF消融患者被随机分配至MOSQ-TSP(即,通过薄薄的内部探针刺穿颅窝)或CONV -TSP(即在不同位置的其他穿刺)。主要终点是访问洛杉矶。次要终点是安全性,时间,荧光检查剂量(剂量面积乘积,DAP)以及从FTC到最终LA入路的额外穿刺次数。结果。在384例患者中,有68例患有FTC(MOSQ-TSP,n = 34,而CONV-TSP,n = 34)。没有并发症的报道。在MOSQ-TSP中,主要终点为100%(相对于73.5%,p <0.002),到达LA的中位时间为72 s [从37到384 s](相对于326 s [从75 s到1936 s],p < 0.002),平均DAP到LA的访问量为1778±2315 mGy / cm 2 (相对于9347±10690 mGy / cm 2 ,p <0.002),附加值的中位数穿刺次数为2 [1至3](相对于0,p <0.002)。结论。对于首次尝试TSP失败的房颤患者,“蚊子”技术可有效,安全且省时地进入LA。这种方法可能有助于弹性,动脉瘤或纤维化隔垫中的TSP。

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