Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions
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Catheter Cardiovasc Interv · May 2015
Case Reports3D printed models for planning endovascular stenting in transverse aortic arch hypoplasia.
To evaluate whether three-dimensional (3D) printed models can be used to improve interventional simulation and planning in patients with aortic arch hypoplasia. ⋯ 3D printed models accurately replicate patients' anatomy and are helpful in planning endovascular stenting in transverse arch hypoplasia. This opens a door for potential simulation applications of 3D models in the field of catheterization and cardiovascular interventions.
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Catheter Cardiovasc Interv · May 2015
Comparative StudyAcute, subacute, and long-term evaluation of a novel endovascular occlusion system in a large animal model.
Endovascular occlusion of blood vessels represents a key component of interventional therapy. While coils are most commonly used, vessel occlusion is generally not achieved immediately and may necessitate a large number of devices. It has been suggested that endovascular plugs may overcome these limitations; however, immediate and durable occlusion remains a challenge with plugs as well. This study evaluates a newly designed endovascular occlusion system (EOS) METHODS: The EOS combines a nitinol coil with an impermeable membranous cap made of expanded polytetrafluoroethylene. The coil offers sufficient radial force to expand the membrane and minimize post-deployment migration. Fifteen test devices were deployed in the iliac (external and internal) and femoral arteries of five miniature swine, while two commercially available devices (platinum coils and a vascular plug) were used as controls in one miniswine. Angiography was performed 1, 5, and 10 minutes after device implantation. Follow-up angiography was obtained either on day 29 or day 61, prior to devices harvesting for histological evaluation and biocompatibility assessment. ⋯ The EOS is a safe and reliable device resulting in immediate and durable vessel occlusion in the peripheral arterial circulation. While no device migration was observed in the pelvic area, it was observed with five test and one control devices in the vicinity of highly mobile articulations, leading to the conclusion that occlusion devices should not be placed within hypermobile areas such as the hip joint.
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Catheter Cardiovasc Interv · May 2015
Case ReportsPercutaneous bi-atrial extracorporeal membrane oxygenation for acute circulatory support in advanced heart failure.
Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) may improve survival after cardiac arrest by providing cardiopulmonary support. However, VA-ECMO increases left ventricular (LV) afterload, which can promote progressive LV distension and often requires a secondary approach to reduce LV pressure and volume in patients with left heart failure. We report a case of biventricular unloading via biatrial cannulation in the presence of LV thrombus using a TandemHeart percutaneous trans-septal cannula for VA-ECMO in an adult patient with refractory ventricular fibrillation.
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Catheter Cardiovasc Interv · May 2015
Feasibility and efficacy of the 2.5 L and 3.8 L impella percutaneous left ventricular support device during high-risk, percutaneous coronary intervention in patients with severe aortic stenosis.
Assessment of the feasibility and outcomes of the 2.5 L and 3.8 L Impella cardiac pump in patients with severe aortic stenosis (AS) and left ventricular impairment undergoing percutaneous revascularization (PCI) with or without balloon aortic valvuloplasty (BAV). ⋯ Implantation of the 2.5 and 3.8 L Impella appears feasible in patients with severe AS and left ventricle (LV) impairment. A balloon-assist technique may be used to facilitate device implantation when initial unassisted attempts fail. Improved hemodynamic stability may enhance the tolerability of lengthy and complex procedures.