Guideline-Directed Medical Therapy in Patients with Chronic Kidney Disease Undergoing Peripheral Vascular Intervention.
2021
INTRODUCTION Guideline-directed medical therapy (GDMT) is imperative to improve cardiovascular and limb outcomes for patients with critical limb ischemia (CLI), especially amongst those at highest risk for poor outcomes, including those with comorbid chronic kidney disease (CKD). Our objective was to examine GDMT prescription rates and their variation across individual sites for patients with CLI undergoing peripheral vascular interventions (PVIs), by their comorbid CKD status. METHODS Patients with CLI who underwent PVI (October 2016-April 2019) were included from the Vascular Quality Initiative (VQI) database. CKD was defined as GFR <60 mL/min/1.73 m2. GDMT included the composite use of antiplatelet therapy and a statin, as well as an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker if hypertension was present. The use of GDMT before and after the index procedure was summarized in those with and without CKD. Adjusted median odds ratios (MORs) for site variability were calculated. RESULTS The study included 28,652 patients, with a mean age of 69.4 ± 11.7 years, and 40.8% were females. A total of 47.5% had CKD. Patients with CKD versus those without CKD had lower prescription rates both before (31.7% vs. 38.9%) and after (36.5% vs. 48.8%) PVI (p < 0.0001). Significant site variability was observed in the delivery of GDMT in both the non-CKD and CKD groups before and after PVI (adjusted MORs: 1.31-1.41). DISCUSSION/CONCLUSION In patients with CLI undergoing PVI, patients with comorbid CKD were less likely to receive GDMT. Significant variability of GDMT was observed across sites. These findings indicate that significant improvements must be made in the medical management of patients with CLI, particularly in patients at high risk for poor clinical outcomes.
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