Tobita Kazuki, Takeshita Satoshi, Saito Shigeru
Department of Cardiology and Catheterization Laboratory, Shonan Kamakura General Hospital, Kamakura, Japan.
J Invasive Cardiol. 2013 Aug;25(8):406-8.
Small 5 Fr guiding catheters are now used in percutaneous coronary intervention (PCI). However, when treating severely calcified and/or tortuous complex coronary lesions, the back-up support of a 5 Fr guiding catheter is often insufficient. We previously developed a 4 Fr child catheter (Kiwami ST-01; Terumo Corporation) and proposed a 4 Fr double-coaxial technique ("mother-child" configuration) to facilitate stent implantation in treating complex coronary lesions. In this manuscript, we report 2 cases of 5 Fr transradial coronary intervention in which stent delivery failed with conventional techniques. In these 2 cases, our 4 Fr double-coaxial technique was employed, and stents were successfully delivered to the target lesions. To the best of our knowledge, this is the first report demonstrating the potential of the 4-in-5 technique during 5 Fr PCI.
小型5F引导导管目前用于经皮冠状动脉介入治疗（PCI）。然而，在治疗严重钙化和/或迂曲的复杂冠状动脉病变时，5F引导导管的支撑往往不足。我们之前研发了一种4F子导管（Kiwami ST-01；泰尔茂株式会社），并提出了一种4F双同轴技术（“母子”配置），以促进在治疗复杂冠状动脉病变时植入支架。在本手稿中，我们报告了2例5F经桡动脉冠状动脉介入治疗病例，其中传统技术未能成功输送支架。在这2例病例中，我们采用了4F双同轴技术，支架成功输送至目标病变。据我们所知，这是第一份证明5F PCI期间5合4技术潜力的报告。
