Key result
An in situ needle deflection technique using a steerable introducer facilitated site-selective radiofrequency transseptal puncture and reduced procedure time by avoiding in vitro needle modification.
Why the study?
Transseptal puncture sometimes requires needle shape modification in vitro, making site-selective transseptal puncture difficult.
Case Report
An in situ needle deflection technique using a steerable introducer offers a novel approach to achieve site-selective radiofrequency transseptal puncture.
May enable precise transseptal access; hypothesis-generating and requires prospective validation before clinical use.
Transseptal puncture (TP) is a prerequisite for gaining access to the left atrium. Selection of a puncture site in the fossa ovalis can impact on catheter ablation of left atrial arrhythmias. However, TP sometimes requires a needle shape modification in vitro, which can make it difficult to accomplish site-selective TP. This report illustrated a novel needle deflection technique in vivo using a steerable introducer. This in situ needle deflection technique is useful in excluding the needle shape modification in vitro and achieving fine adjustment of the needle curve in vivo, thus contributing to site-selective radiofrequency TP and reducing procedure time.
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Itoh et al. (2019) conducted a case report in Left atrial arrhythmias requiring transseptal puncture. In situ needle deflection technique using a steerable introducer was evaluated. An in situ needle deflection technique using a steerable introducer facilitated site-selective radiofrequency transseptal puncture and reduced procedure time by avoiding in vitro needle modification.
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