Impact of intravascular ultrasound‐guided drug‐eluting stent implantation on patients with chronic kidney disease: Results from ULTIMATE trial

OBJECTIVES: This study aimed to investigate the impacts of intravascular ultrasound (IVUS)-guided drug-eluting stent (DES) implantation on patients with chronic kidney disease (CKD) based on the ULTIMATE trial. BACKGROUND: IVUS-guided DES implantation improves clinical outcomes in complex lesions. However, routine IVUS guidance in patients with CKD remains controversial. METHODS: CKD was defined as an estimated glomerular filtration rate (eGFR) <60 mL min-1 1.73 m-2 . The primary end point was target vessel failure (TVF) at 12 months, including cardiac death, target vessel myocardial infarction, and clinically driven target vessel revascularization. RESULTS: eGFR was available in 1,443 patients, of whom 723 were in the IVUS guidance group, and 720 were in the angiography guidance group. Finally, CKD was present in 349 (24.2%) patients. At 12 months, TVF in the CKD group was 7.2%, which was significantly higher than 3.2% in the non-CKD group (p = .001). Moreover, there were 25 TVFs in the CKD patients, with 7 (3.9%) TVFs in the IVUS group and 18 (10.7%) TVFs in the angiography group (hazard ratio [HR]: 0.35; 95% confidence interval [CI]: 0.15-0.84; p = .01), whereas 35 TVFs occurred in patients without CKD, with 14 (2.6%) TVFs in the IVUS group and 21 (3.8%) TVFs in the angiography group (HR: 0.67; 95% CI: 0.34-1.32; p = .25; p for interaction = .24). CONCLUSIONS: This study demonstrated that CKD patients undergoing DES implantations were associated with a higher risk of TVF at 12 months. More importantly, the risk of TVF in the CKD patients could be significantly decreased through IVUS guidance. CLINICAL TRIAL: NCT02215915.