Predictors of major adverse events after stent implantation for atherosclerotic renal artery stenosis

Year 2025, Volume: 11 Issue: 2, 179 - 189

Fatih Koca , Ömer Furkan Demir

https://doi.org/10.18621/eurj.1628550

Abstract

Objectives: Atherosclerotic renal artery stenosis (ARAS) is the most frequently seen cause of secondary hypertension (HT). ARAS associated with adverse cardiovascular events independently of other traditional cardiovascular risk factors, and increased mortality. Percutaneous transluminal renal arterial stenting (PTRS) is important methods in ARAS treatment. The aim of this study was to investigate major adverse events (MAE) and potential predictors in patients undergoing PTRS for ARAS by evaluating variables before and immediately after the procedure, including the SYNTAX score.

Methods: One hundred and five consecutive patients who underwent PTRS over a period of approximately 10 years were included in our study. Patients were divided into two groups, MAE negative (-) and MAE positive (+), according to the occurrence of MAE. After comparing both groups with difference tests, independent predictors were investigated with univariate and multivariate Cox regression analysis. Afterwards, Receiver Operating Characteristics (ROC) analysis was performed on independent predictors.

Results: The average age of the patients was 63.32±11.62 years (range: 30-83 years) and 52 (49.5%) of them were male. Sixty-two patients constituted the MAE (-) and 43 the MAE (+) groups. In multivariate Cox regression analysis, chronic obstructive pulmonary disease (COPD), left ventricular ejection fraction (LVEF), and the total number of antihypertensives after the procedure were identified as independent predictors. As a result of the ROC analysis, a cutoff value of ≤55% for LVEF was determined to have area under the curve (AUC) 0.733, 69.8% sensitivity, and 77.42% specificity (P<0.001). The use of more than 3 antihypertensive drugs after the procedure was found to have AUC 0.624, 34.88% sensitivity, and 82.26% specificity (P=0.023).

Conclusions: LVEF, COPD, and the postprocedural total number of antihypertensives were independent predictors for MAE seen after PTRS in ARAS patients. These predictors can be used to estimate the risk in these patients. To be able to prevent adverse events, it is important that patients with these markers are treated and followed up more closely.

Keywords

Renal artery stenosis, atherosclerosis, hypertension, stent, adverse events

Ethical Statement

This study was approved by the Health Sciences University Bursa Yüksek Ihtisas Training and Research Hospital Medical Sciences Ethics Committee (Decision no: 2024-TBEK 2024/07/04 and date: 31.07.2024)

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