PMC7376375_01
Treatment of the right common iliac to facilitate delivery of a guide sheath.
*=flow-limiting lesion
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Figures 1-3 provide examples of the OA utilization in severely calcified arteries after failed balloon angioplasty. Figure 1(a) indicates a flow-limiting lesion preventing delivery of a guide sheath over an iliac bifurcation despite two failed attempts to advance the sheath with balloon angioplasty. Figure 1(b) shows the angiographic image post-treatment with the OA 2.0-mm solid crown and balloon angioplasty, enabling the delivery of the guide sheath and stent placement.
Comparison of treatment methods in the left common iliac artery. *=proximal
severely calcified stenosed target lesion; **=previous under-expanded
stent
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Figures 1-3 provide examples of the OA utilization in severely calcified arteries after failed balloon angioplasty. In a second case, the asterisk on a pre-treatment angiographic image (Figure 2(a)) shows a proximal severely calcified stenosed target lesion (outside/proximal to previously placed stent) that failed to respond to balloon angioplasty, while the double asterisk (Figure 2(a)) indicates a previous under-expanded stent due to failed balloon angioplasty and no treatment with OA. Figure 2(b) shows an angiographic image post-treatment of the proximal lesion (non-in-stent) with the OA 2.0-mm solid crown, balloon angioplasty, and stent placement, resulting in a fully expanded stent.
Bilateral iliac intervention for the delivery of a bifurcating endograft
stent in an endovascular aneurysm repair. Arrows=severely calcified stenosed
target lesions; green circle=OA crown
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Figures 1-3 provide examples of the OA utilization in severely calcified arteries after failed balloon angioplasty. Finally, the third case (Figure 3(a)-(g)) is an example bilateral iliac OA treatment after a failed balloon angioplasty procedure, resulting in the successful placement of a large bore endovascular aneurysm repair (EVAR) endograft stent and subsequent resolution of a previously existing aortic aneurysm. Briefly, Figure 3(a)-(b) shows a baseline pre-treatment angiographic image of the aortoiliac region. Thus, the procedure escalated to OA treatment (Figure 3(c)-(d); green circle highlights the OA 2.0-mm solid crown) of these lesions which resulted in greater lumen gain and compliance change within the aortoiliac region for the successful placement of a bifurcating EVAR endograft stent (Figure 3(e)-(g)).