Carotid artery calcific disease management strategies during transcarotid artery revascularization
Estratégias de manejo da calcificação da artéria carótida durante revascularização por via transcarotídea
To the Editors,
Endovascular treatment of carotid artery disease has gone through fast-paced evolution since the advent of balloon angioplasty and stents three decades ago. Nevertheless, it was not until significant improvements in neuroprotection were achieved that carotid artery stenting became a solid contender to the gold standard carotid artery endarterectomy. Embolic protection devices, such as proximal common and/or external carotid artery balloon occlusion devices and internal carotid artery filters paved the way toward a safer and more definitive strategy. The concept of flow reversal in the early 2000s,
Carotid artery calcific disease remains a challenge in patients undergoing carotid artery stenting regardless of whether it is done via a transfemoral or transcarotid approach. By far, the most challenging scenario is circumferentially calcified internal carotid artery plaques that can cause inadequate expansion of stents and limited luminal gain despite vigorous pre- and post-dilation of the lesion.
The two main strategies use either atherectomy devices or the new intravascular lithotripsy (IVL) balloon. We have reported both use of orbital atherectomy
1 Bates MC, Dorros G, Parodi J, Ohki T. Reversal of the direction of internal carotid artery blood flow by occlusion of the common and external carotid arteries in a swine model. Catheter Cardiovasc Interv. 2003;60(2):270-5.
2 Malas MB, Leal Lorenzo JI, Nejim B, et al. Analysis of the ROADSTER pivotal and extended-access cohorts shows excellent 1-year durability of transcarotid stenting with dynamic flow reversal. J Vasc Surg. 2019;69(6):1786-96.
3 Foin N, Gutierrez-Chico JL, Nakatani S, et al. Incomplete stent apposition causes high shear flow disturbances and delay in neointimal coverage as a function of strut to wall detachment distance: implications for the management of incomplete stent apposition. Circ Cardiovasc Interv. 2014;7(2):180-9.
4 Chakhtoura EY, Hobson RW 2nd, Goldstein J, et al. In-stent restenosis after carotid angioplasty-stenting: incidence and management. J Vasc Surg. 2001;33(2):220-5.
5 Mouawad NJ. Successful use of adjunctive orbital atherectomy for extensively calcified carotid artery lesions using flow reversal neuroprotection technique. Ann Vasc Surg. 2020;69:449.e1-6.
6 Malgor RD, Rogers K, Malgor EA, Al-Musawi M, Siada S, Jacobs DL. The utilization of intravascular lithotripsy to facilitate transcarotid artery revascularization. J Cardiovasc Surg. 2020;61(6):759-62. PMid:32613822.