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The GuideLiner catheter: A supportive tool in percutaneous coronary intervention of chronic total occlusion
Jan-Erik Guelker1,2, Christian Blockhaus1,2, Knut Kroeger3
1Hertcentre Niederrhein, Department of Cardiology, Helios Clinic Krefeld, Krefeld, GermanyaGermany.
Insights
The GuideLiner catheter effectively supports complex percutaneous coronary intervention (PCI) for chronic total occlusion (CTO), especially in calcified arteries. This adjunctive device enhances success rates and is recommended when other techniques fail.
Area of Science:
- Interventional Cardiology
- Vascular Interventions
Background:
- Percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) can fail due to inadequate guiding catheter support, particularly in calcified, tortuous anatomy.
- Insufficient backup support is a primary limitation in complex CTO procedures.
Purpose of the Study:
- To evaluate the feasibility and effectiveness of the GuideLiner (GL) catheter as a solution for poor backup support during CTO PCI.
- To assess the GL catheter's role in overcoming challenges in calcified and tortuous coronary arteries.
Main Methods:
- A study involving 18 patients undergoing CTO PCI utilized the GuideLiner catheter.
- The GuideLiner is a coaxial, monorail guiding catheter extension designed to enhance support and reduce friction.
- Procedures included both antegrade and retrograde approaches for CTO treatment.
Main Results:
- The study population predominantly featured severely calcified lesions (94.4%).
- Lesion complexity, assessed by the Japanese CTO score, averaged 3.56.
- The overall success rate for CTO PCI using the GuideLiner catheter was 88.9%, with no significant complications reported.
Conclusions:
- The GuideLiner catheter serves as a valuable adjunctive device, improving outcomes in complex CTO PCI.
- It is particularly indicated for cases requiring enhanced backup support to navigate severe calcification.
- The GL catheter is recommended as an important tool in advanced interventional cardiology, especially when anchor balloon or anchor wire techniques are not feasible.
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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