Carotid Endarterectomy and Transcarotid Artery Revascularization can be Performed with Acceptable Morbidity and Mortality in Patients with Chronic Kidney Disease

J Vasc Surg. 2024 Apr 20:S0741-5214(24)01068-1. doi: 10.1016/j.jvs.2024.04.045. Online ahead of print.

Abstract

Introduction: Patients with chronic kidney disease (CKD) are considered a high-risk population, and the optimal approach to the treatment of carotid disease remains unclear. Thus, we compared outcomes following carotid revascularization for patients with CKD by operative approach of carotid endarterectomy (CEA), transfemoral carotid artery stenting (TFCAS), and transcarotid arterial revascularization (TCAR).

Methods: The Vascular Quality Initiative was analyzed for patients undergoing carotid revascularizations (CEA, TFCAS and TCAR) from 2016-2021. Patients with normal renal function (eGFR >90 ml/min/1.72m2) were excluded. Asymptomatic and symptomatic carotid stenosis were assessed separately. Preoperative demographics, operative details, and outcomes of 30-day mortality, stroke, myocardial infarction (MI) and composite variable of stroke/death were compared. Multivariable analysis adjusted for differences in groups, including CKD stage.

Results: 90, 343 CKD patients underwent revascularization (CEA n=66,870; TCAR n=13,459; TFCAS n=10,014; asymptomatic 63%, symptomatic 37%). Composite 30-day mortality/stroke rates were: Asymptomatic - CEA: 1.4%, TCAR: 1.2%, TFCAS: 1.8%; Symptomatic - CEA: 2.7%, TCAR: 2.3%, TFCAS: 3.7%. In adjusted analysis, TCAR had lower 30-day mortality compared to CEA (Asymptomatic: aOR: 0.4 [0.3-0.7]; Symptomatic: aOR: 0.5 [0.3-0.7]), and no difference in stroke, MI, or the composite outcome of stroke/death in both symptom cohorts. TCAR had lower risk of other cardiac complications compared to CEA in asymptomatic patients (aOR: 0.7 [0.6-0.9]) and had similar risk in symptomatic patients. Compared to TFCAS, TCAR patients had lower 30-day mortality (Asymptomatic: aOR: 0.5 [0.2-0.95], Symptomatic: aOR: 0.3 [0.2-0.4]), stroke (Symptomatic: aOR: 0.7 [0.5-0.97) and stroke/death (Asymptomatic aOR: 0.7 [0.5-0.97], Symptomatic aOR: 0.6 [0.4-0.7]), but no differences in MI or other cardiac complications. Patients treated with TFCAS had higher 30-day mortality (aOR: 1.8 [1.2-2.5]) and stroke risk (aOR: 1.3 [1.02-1.7]) in symptomatic patients compared to CEA. There were no differences in MI or other cardiac complications.

Conclusion: Among patients with CKD, TCAR and CEA showed rates of stroke/death less than 2% for asymptomatic patients and less than 3% for symptomatic patients. Given the increased risk of major morbidity and mortality, TFCAS should not be performed in CKD patients who are otherwise anatomic candidates for TCAR or CEA.

Keywords: Carotid disease; carotid stenosis; carotid stenting; chronic kidney disease; end stage renal disease; transcarotid artery revascularization.