12/29/2023 0 Comments Guideliner 6fThe more recent GuideLiner V3 catheter has a 25-cm cylinder at the distal tip and a half-pipe design facilitating smooth device entry and delivery ( Figure 1). The GuideLiner V2 catheter provides additional extension of 5 cm and presents all polymer collar for increased flexibility. It consists of a coaxial exchange system joined to a 125-mm compact metal hypotube, and a flexible extension of 20 cm with a radiopaque marker located 2.7 mm from the tip and an inner diameter 1-Fr size smaller than the guiding catheter. The GuideLiner catheter (Vascular Solutions Inc., Minneapolis, MN, USA) is a coaxial “mother and child” catheter mounted on a monorail system extending the guide catheter. We report two didactic cases showing the usefulness of the GuideLiner device in everyday catheterization laboratory practice. 7 - 9 As a “mother and child” system, the GuideLiner catheter (Vascular Solutions Inc., Minneapolis, MN, USA) provides an extension to the guide catheter with a better coaxial alignment and stability. 6 The use of stiffer guide wire, anchoring balloon technique, and deeper intubation of the guide catheter may represent, in some cases, reliable options able to improve back-up support. Regardless of the clinical setting, a good back-up represents one of the most important conditions to ensure guide wire and balloon advancement and stent delivery, thereby leading to PCI success. Thanks to the development of equipment and techniques, 1, 2 particularly in the wake of chronic total occlusion revascularization, 3 - 5 percutaneous coronary intervention (PCI) has reduced the surgical indications of myocardial revascularization. In both cases, the GuideLiner catheter provided a good back-up insuring the success of PCI and drug-eluting stents implantation, with a good in-hospital outcome. The second case was an elective PCI in a 76-year-old man admitted for stable angina (Canadian Cardiovascular Society class III), related to focal intra-stent restenosis of a saphenous venous graft to the left anterior descending. The first case was a primary percutaneous coronary intervention (PCI) in a 71-year-old diabetic man admitted for inferior ST-elevation myocardial infarction, related to tight proximal stenosis in a dominant tortuous and calcified left circumflex. As a “mother and child” system, the GuideLiner catheter (Vascular Solutions Inc., Minneapolis, MN, USA) provides an extension to the guide catheter with better coaxial alignment and stability. Regardless of the clinical setting, a good back-up represents one of the most important conditions to ensure guide wire and balloon advancement and stent delivery.
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