Outcomes after percutaneous coronary interventions in patients with CKD: improved outcome in the stenting era

Area of Science:

• Cardiology
• Nephrology
• Interventional Cardiology

Background:

• Percutaneous coronary intervention (PCI) with stenting is standard for reducing adverse events in the general population.
• The efficacy of stenting in high-risk populations, such as those with chronic kidney disease (CKD), has been less studied.
• This study compares outcomes of PCI in CKD patients before and after the widespread adoption of stenting.

Purpose of the Study:

• To compare outcomes of PCI in patients with CKD during periods of low and high stent use.
• To evaluate the impact of widespread stenting on major adverse cardiac events (MACE) in CKD patients.
• To determine if the benefits of stenting extend to all stages of kidney function in patients undergoing PCI.

Main Methods:

• Retrospective analysis of 1,879 patients undergoing PCI, divided into low (18% stent use) and high (94.1% stent use) periods.
• Collection of demographic, renal function (glomerular filtration rate), cardiac function, and PCI data.
• Kaplan-Meier curves and Cox proportional hazards analysis to assess MACE (cardiac revascularization, myocardial infarction, or death) at 3 years.

Main Results:

• The high stent use cohort (contemporary) had a greater prevalence of severe CKD, cardiac risk factors, and cardiovascular disease at baseline.
• Major adverse cardiac events were significantly reduced in the contemporary cohort (HR 0.61; 95% CI 0.52-0.72).
• The observed benefit of stenting extended across all stages of kidney function.

Conclusions:

• Patients with CKD undergoing PCI in the era of widespread stenting demonstrate improved clinical outcomes.
• Further research is warranted to establish optimal revascularization strategies specifically for CKD patients.
• Stenting appears to be a safe and effective adjunctive therapy for PCI in patients with CKD.