IMR Press / RCM / Volume 24 / Issue 6 / DOI: 10.31083/j.rcm2406181
Open Access Review
The Controversies of Coronary Artery Disease in End-Stage Kidney Disease Patients: A Narrative Review
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1 Department of Nephrology, Prince of Wales Hospital, Randwick, NSW 2031, Australia
2 Prince of Wales Clinical School, University of New South Wales, Kensington, NSW 2033, Australia
3 Department of Cardiology, Prince of Wales Hospital, Randwick, NSW 2031, Australia
*Correspondence: kenneth.yong@health.nsw.gov.au (Kenneth Yong)
Rev. Cardiovasc. Med. 2023, 24(6), 181; https://doi.org/10.31083/j.rcm2406181
Submitted: 1 February 2023 | Revised: 15 March 2023 | Accepted: 22 March 2023 | Published: 25 June 2023
(This article belongs to the Special Issue Coronary Artery Disease in Dialysis Patients)
Copyright: © 2023 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.
Abstract

Cardiovascular disease (CVD) accounts for more than 50% of deaths among patients with end-stage kidney disease (ESKD). Approximately 40–50% of ESKD patients have clinically significant coronary artery disease (CAD) due to atherosclerosis which accounts for a significant proportion of CVD risk. However, other CVD pathologies including myocardial fibrosis, vascular calcification and arterial stiffening play important contributory roles. The pathophysiology of CAD in ESKD is distinct from the general population. ESKD patients is typically have diffuse multi-vessel involvement with increased calcification that involves both intimal and medial layers of the arterial wall. There is a complex interplay between an increased burden of traditional Framingham risk factors and exposure to non-traditional risk factors including chronic inflammation and dialysis per se. Established treatments for CAD risk factors including cholesterol lowering with statin therapy have attenuated effects and ESKD patients also have worse outcomes after revascularisation. Recent trials such as the Canakinumab Anti-Inflammatory Thrombosis Outcomes Study (CANTOS) have established that direct modulation of inflammation improves CVD outcomes in the general population, which may prove to be a potential attractive therapeutic target in ESKD patients. Multiple retrospective observational studies comparing mortality outcomes between haemodialysis (HD) and peritoneal dialysis (PD) patients have been inconclusive. Randomised trials on this issue of clinical equipoise are clearly warranted but are unlikely to be feasible. Screening for stable CAD in asymptomatic ESKD patients remains a clinical dilemma which is unique to chronic dialysis patients being assessed for kidney transplantation. This has become particularly relevant in light of the recent ISCHEMIA-CKD trial which demonstrated no difference between optimal medical therapy and revascularisation upon CVD outcomes or mortality. The optimal strategy for screening is currently being investigated in the ongoing large international multi-centre CARSK trial. Here we discuss the pathophysiology, risk modification, treatment, screening and future directions of CAD in ESKD.

Keywords
coronary artery disease
end-stage kidney disease
atherosclerosis
dialysis modality
chronic inflammation
coronary artery disease screening
revascularisation
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