The Guidezilla GCES is a unique, rapid exchange mother-and-child catheter. The GuideLiner catheter is a rapid GCES with a long flexible tubular end that can be deeply advanced into lesions, providing support without the need to disconnect it from the mother guide 12, 13, 14. The Proxis device and the Heartrial II catheter are 120 cm catheters that are introduced into the mother guide and require removing the Y-connector 8, 9, 10, 11. One solution is use of a guide catheter extension system (GCES).Ĭommercially available GCES include the Proxis device (St Jude Medical, St Paul, MN, USA), Heartrail II catheter (Terumo, Tokyo Japan), GuideLiner (Vascular Solutions, Minneapolis, MN, USA), and Guidezilla (Boston Scientific, Natick, MA, USA). Most of these obstacles can be dealt with by certain tips and tricks. TRI procedures can fail because of arterial spasms, failure to puncture the access site, failure to cannulate the lesion vessels, and lack of adequate guide support. Also procedures involving complex coronary artery anatomies, extreme vessel tortuosity, calcification, angulation, and chronic total occlusions (CTO) are often time consuming and challenging 6, 7. However, in many patients, the size of the radial artery limits the guide catheter (GC) to a size no larger than 7F. Transradial intervention (TRI) is often chosen for percutaneous coronary interventional (PCI) procedures because of fewer complications, earlier patient mobilization, and improved clinical outcomes compared with the transfemoral approach 1, 2, 3, 4, 5. This device can help interventionalists successfully perform difficult procedures. The estimated mean distance of Guidezilla intubation into the target vessel was 7.66 ± 2.29 cm.The Guidezilla catheter extension safely facilitated successful completion of TRI in complex coronary artery lesions. The mean diameter of the deployed stents was 2.97 ± 0.37 mm, and the length was 27.19 ± 8.14 mm. The most frequent target vessels were the RCA (34%) and LAD (31%), patients had complex type C (53%) or B (47%) lesions, severely tortuous (41%) and angulated (22%).With the use of Guidezilla, technique success was 100%, and procedural success was 94%. Thirty-two patients’ clinical characteristics, angiographic details, and in-hospital outcome retrospectively collected between June 2015 and August 2017. The aim of this study was to investigate the efficacy and safety of the Guidezilla guide extension catheter in complex coronary interventions. As there are few published reports of its use, we describe our experience using this device to assist TRI in Chinese patients. Guidezilla is a mother-and-child catheter enabling increased support during complex interventions. Anatomic variations, calcified, tortuous, angulated lesions, and lack of support to increase the complexity of transradial intervention (TRI).
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