Options for carotid revascularization.

Introduction of Transcarotid Artery Stenting and the Inherent Responsibilities for a Vascular Surgeon

Carotid artery endarterectomy (CEA) and carotid artery stenting (CAS) are 2 effective treatment options for carotid revascularization and stroke prevention. The long-term outcomes of Carotid Revascularization Endarterectomy versus Stenting Trial (CREST) reported similar stroke and death rate between the 2 procedures. This study presents the short- and long-term outcomes of CEA and CAS of all risk patients performed by a single vascular surgeon in a real-world setting. We retrospectively reviewed all patients who underwent CEA and CAS from September 2005 to June 2017 at our institute. Student t test, χ2, and Fisher exact tests were used to compare patient's characteristics. Multivariate logistic, cox regression models and survival analysis were used to compare postoperative and long-term outcomes between the 2 groups. Over 2000 patients were evaluated for carotid artery stenosis during the study period, and 313 revascularization procedures were performed (CEA: 47%, CAS: 53%). Patients' age (Mean [95% confidence interval, CI] 68.8 [67.2-70.4] vs 69.7 [68.2-71.3], P = .40) was similar between CEA and CAS. Patients who underwent CAS had significantly higher comorbidities (chronic obstructive pulmonary disease [COPD], chronic heart failure [CHF], hyperlipidemia, and prior ipsilateral intervention, all P < .05). No difference was found in 30-day complications after CEA versus CAS including stroke (2.0% vs 1.2%), myocardial infarction (MI; 0.7% vs 1.2%), death (0% vs 1.2%) as well as combined major adverse events (stroke/death/MI; 2.7% vs 3.0%; all P > .05). Overall 7-year survival, stroke-free survival and restenosis-free survival were similar between the 2 groups ( P > .5). Significant predictors of mortality were diabetes (hazard ratio, HR [95% CI]: 2.41 [1.15-5.08]), chronic kidney disease (HR [95% CI]: 4.89 [1.97-12.13]), and COPD (HR [95% CI]: 3.31 [1.43-7.71]; all P values <.05). Statin use was protective with 71% reduction in risk of mortality (HR [95% CI]: 0.29 [0.12-0.67], P = .004). Our experience showed comparable short- and long-term outcomes of CAS and CEA performed for carotid artery stenosis by vascular surgeon. There was no difference between single institutional long-term outcomes and CREST outcomes following CEA and CAS.

Background Carotid artery stent (CAS) placement may be used as an alternative to carotid endarterectomy in selected patients with symptomatic and asymptomatic carotid artery disease. Perhaps because stroke is an uncommon event after CAS, the angiographic predictors of stroke have been incompletely described. Methods A total of 1070 catheter-based angiograms were centrally reviewed in patients undergoing CAS enrolled in the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST). Of these patients, 43 (4%) experienced periprocedural stroke. Angiograms were reviewed using qualitative and quantitative methodology before and after CAS. Reviews were done blinded to patient outcomes and strokes were adjudicated by a central committee blinded to results of angiography. The view showing the greatest carotid stenosis severity was selected. Extreme tortuosity was defined as 2 severe bends &gt;90 degrees (maximum angulation/20 mm segment) beyond the target lesion, sequential lesions as lesions separated by ≥10 mm, and narrow mouth ulcer as a discrete area of contrast extension beyond the normal arterial lumen with a narrow inlet into the ulceration. Results The internal carotid artery reference diameter was 4.2 ± 0.8 mm, the minimal lumen diameter was 1.1 ± 0.6 mm, and the baseline % diameter stenosis was 74.1 ± 11.6%. There were no differences in vessel size or severity of the stenosis in patients with and without stroke. Morphologic predictors significantly related to the risk of subsequent stroke are listed in the Table . Calcification, lesion eccentricity, baseline flow, and distance from the bifurcation were not predictive of periprocedural stroke (p &gt; 0.05). Conclusion In CREST, four angiographic variables were found to increase risk for stroke during and within 30 days after CAS: severe distal tortuosity, sequential lesions, lesion length &gt; 20 mm, and narrow mouth ulcer. Angiographic characteristics beyond percent stenosis may help in patient selection in terms of best revascularization option.

Objective: To analyze the 1070 catheter-based angiograms performed on patients undergoing carotid artery stenting (CAS) in the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST). Background CAS may be useful as an alternative to carotid endarterectomy in selected patients with symptomatic and asymptomatic carotid artery disease. The angiographic predictors of stroke following CAS have been incompletely described. Design/Methods: Of the 1070 CAS patients, 43 (4%) experienced periprocedural stroke. Angiograms were reviewed before and after CAS. Reviews were blinded to outcomes. Strokes were adjudicated by a committee blinded to results of angiography. The view showing the most severe stenosis was selected. Extreme tortuosity was defined as 2 severe bends >90 degrees (maximum angulation/20 mm segment) beyond the target lesion, sequential lesions as lesions separated by ≥10 mm, and narrow mouth ulcer as a discrete area of contrast extension beyond the normal arterial lumen with a narrow inlet into the ulceration. Results: The internal carotid artery mean reference diameter was 4.2 ± 0.8 mm, the minimal mean lumen diameter was 1.1 ± 0.6 mm, and the baseline mean % diameter stenosis was 74.1 ± 11.6%. There were no differences in vessel size or severity of the stenosis in patients with and without stroke. Morphologic predictors significantly related to the risk of subsequent stroke were lesion length (p=0.009), sequential lesions (p=0.007), severe distal tortuosity (p=0.025), and narrow mouth ulcer (p=0.05). Calcification, lesion eccentricity, baseline flow, and distance from the bifurcation were not predictive of periprocedural stroke (p > 0.05). Conclusions: In CREST, four angiographic variables were found to increase risk for stroke during and within 30 days after CAS: severe distal tortuosity, sequential lesions, lesion length > 20 mm, and narrow mouth ulcer. Angiographic characteristics beyond percent stenosis may help in patient selection in terms of best revascularization option. Supported by: The National Institute of Neurological Disorders and Stroke (NINDS) and the NIH (R01 NS 038384) and by supplemental funding from Abbott Vascular Solutions (formerly Guidant). Disclosure: Dr.Roubin has received royalty payments from Abbott Vascular and Cook Inc. Dr. Popma has received personal compensation for activities with Boston Scientific as a consultant.Dr. Popma has received research support from Boston Scientific, Cordis, Abbott Vascular, and Medtronic. Dr. Almonacid has nothing to disclose. Dr. Morrish has nothing to disclose. Dr. Katzen has received personal compensation for activities with Boston Scientific, W.L. Gore, and Medtronic as a consultant and particpant on an advisory board. Dr. Chakhtoura has nothing to disclose. Dr. Lal has nothing to disclose. Dr. Voeks has nothing to disclose. Dr. Meschia has nothing to disclose. Dr. Brott has received personal compensation for activities with 3D Communications.

Feasibility and Intermediate Results of Transcarotid Revascularization with a Prosthetic Conduit

PurposeCarotid artery stenting (CAS) has evolved as a first-line therapeutic option for carotid revascularization in indicated patients for stroke prevention, but there is still a lack of data on its effect on cognitive function (CF), especially among Indian patients. To determine the effect of CAS on CF and to study the immediate and delayed complications of CAS in Indian patients.Materials and MethodsThis was a prospective, observational, single-center study. CF was assessed using Addenbrooke’s cognitive examination version III (ACE) before and 3 months after stenting. The demographic and clinical parameters were also assessed. A follow-up evaluation after 3 months was done to compare CF and to observe the occurrence of any complications.ResultsOut of 31 patients, 3 were lost to follow up. There were no immediate or delayed procedure-related complications. There was a statistically significant improvement in overall ACE score and memory before and after stenting. On subgroup analysis of those with and without strokes, there was a significant improvement in visuospatial function and mean ACE score. Those with left CAS had significant improvement in memory, visuospatial, language, and ACE scores than right CAS.ConclusionCAS was associated with significant improvement in CF in patients.

Background: Carotid angioplasty &amp; stenting is becoming an emerging therapeutic option for carotid revascularization. The use of cerebral protection system has expanded the area of application of the procedure worldwide. Purpose: To assess the feasibility, success rate, safety as well as in-hospital &amp; early 30 days outcome in patients undergoing percutaneous carotid intervention. Methods: A retrospective, observational study where a total of 18 (Eighteen) consecutive patients who presented with symptomatic and &gt; 70 % carotid artery stenosis &amp; asymptomatic but &gt; 90% stenosis underwent percutaneous carotid intervention. All of them had coronary artery disease; CABG was done in 3 patients &amp; PCI in 9 patients. Three of them had previous stroke (Ischemic) &amp; 7 had TIA. Results: Technical and angiographic success was achieved in all patients. Carotid artery obstruction diminishes from 85 ± 14 % to 10 ± 5 % (p&lt; .001). Mean lesion length was 12 ± 3 mm and mean time of carotid occlusion during balloon inflation was 10 ± 2.5 sec. distal protection devices used in all patents. No major stroke or death occurred during procedure. One patient developed No-flow because of obstruction of distal protection device which was managed by thrombosuction. One patient developed TIA. All patients were discharged from hospital after an average of 3 days &amp; all of them were prescribed dual antiplatalet therapy for 6 months. During follow-up one patient died secondary to acute myocardial infarction and one patient developed major stroke. Conclusion: Percutaneous angioplasty and stenting associated with distal protective devices appear feasible, effective and almost safe endovascular treatment modality for carotid artery stenosis. Key words: Carotid artery disease; Carotid angioplasty DOI: 10.3329/cardio.v2i2.6644Cardiovasc. j. 2010; 2(2) : 218-222

Intravascular Lithotripsy During Transcarotid Artery Revascularization: A Novel Approach to Highly Calcified Lesions in High-Risk Patients

Assessing the suitability of the carotid bifurcation for stenting: Anatomic and morphologic considerations

The use of intravascular lithotripsy in conjunction with transcarotid artery revascularization for high grade carotid artery stenosis

IntroductionTransradial neurointerventional procedures have become increasing popular in the past few years including carotid stenting, however lack of a dedicated workhorse catheter for transradial carotid stenting leave much to be...

Intravascular lithotripsy during transcarotid arterial revascularization for highly calcified lesions in high-risk patients.

A Systematic Review and Meta-Analysis of Transcarotid Artery Revascularization with Dynamic Flow Reversal Versus Transfemoral Carotid Artery Stenting and Carotid Endarterectomy

In-hospital outcomes of transcarotid artery revascularization and carotid endarterectomy in the Society for Vascular Surgery Vascular Quality Initiative

Trends and outcomes of concurrent carotid revascularization and coronary bypass