Experimental Evaluation of Endovascular Fenestration Scissors in an Ovine Model of Aortic Dissection

European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery
Salma El BattiJean-Marc Alsac

Abstract

To evaluate the experimental feasibility of endovascular fenestration using specific endovascular scissor prototypes in an ovine model of acute aortic dissection (AD). A previously described endovascular technique was used to create a model of acute type B AD in sheep. Endovascular fenestrations using either endovascular scissor prototypes or a long sheath were compared. Four prototypes of endovascular fenestration scissors were evaluated. Both validity of the experimental model of AD and technical success of endovascular fenestration were assessed by haemodynamic criteria, completion angiography, transesophageal echocardiography, and post-procedural analysis of harvested aortas. Experimental acute AD was created by endovascular means in 17 sheep, with a technical success rate of 82%. Systolic blood pressure was lower in the false lumen than in the true lumen (58 ± 5 vs. 79 ± 3 mmHg, respectively; p < .001). Endovascular fenestration was performed in 11 models (endovascular scissors n = 8; long sheath n = 3). Controlled endovascular fenestration was obtained by the use of endovascular scissors (n = 5/8), resulting in a significant rise in false lumen systolic blood pressure after fenestration (60 ± 2 vs. 67 ± 9 mmHg before and ...Continue Reading

Citations

Oct 3, 2020·Journal of Cardiothoracic Surgery·Zhaoxiang ZengZaiping Jing
May 26, 2021·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Thomas GandetTilo Kölbel

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