The GuideLiner catheter: A supportive tool in percutaneous coronary intervention of chronic total occlusion
Abstract Background Failure of delivering a stent or a balloon across the target lesion during percutaneous coronary intervention (PCI) of chronic total occlusion (CTO), especially in arteries with calcified tortuous anatomy, is often due to insufficient backup support from the guiding catheter. The purpose of this study was to assess the feasibility of the GuideLiner (GL) catheter use. Methods We examined 18 patients and used the GL catheter to overcome poor support and excessive friction in standardized antegrade and retrograde CTO procedures. The GL is a coaxial, monorail guiding catheter extension delivered through a standard guiding catheter and is available in different sizes. Results Almost all lesions were classified as severely calcified (94.4±0.24%). The Japanese CTO score reflecting lesion complexity was 3.56±0.78. All procedures were performed femorally; the retrograde approach was used in 27.8±0.46% of cases. The overall success rate was 88.9±0.32%; there were no relevant complications. Conclusions The GL catheter is an adjunctive interventional device which enhances and amplifies CTO-PCI. Its use is indicated in cases in which back-up force needs to be strengthened to pass a CTO despite advanced calcification. It can be recommended as an important additional tool in advanced interventional cardiology such as antegrade and retrograde CTO-PCI if other techniques like anchor balloon or anchor wire are not possible.
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