Factors Associated with In-stent Restenosis in Patients Following Percutaneous Coronary Intervention

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Biomedical Engineering

Background:

• Percutaneous Coronary Intervention (PCI) is a common procedure to treat coronary artery disease.
• In-Stent Restenosis (ISR) remains a significant complication, leading to recurrent stenosis within the deployed stent.
• Understanding the multifactorial nature of ISR is essential for developing effective prevention and management strategies.

Purpose of the Study:

• To identify and analyze the key factors associated with the development of In-Stent Restenosis (ISR) in patients who have undergone Percutaneous Coronary Intervention (PCI).

Main Methods:

• A retrospective cross-sectional study analyzed secondary data from medical records of 289 post-PCI patients.
• Follow-up angiography data between January 2009 and March 2014 was used to assess ISR.
• ISR was defined as a stenosis diameter of 50% or more within or adjacent to the stent at follow-up angiography.

Main Results:

• The incidence of ISR was higher in patients receiving bare-metal stents (BMS) (61.3%) compared to drug-eluting stents (DES) (40.7%).
• Significant factors associated with ISR included stent type, stent length, bifurcation lesions, smoking, vascular diameter, hypertension, and diabetes mellitus.
• Odds ratios indicated increased risk for ISR with specific stent types, longer stents, bifurcation involvement, smoking, smaller vascular diameter, hypertension, and diabetes.

Conclusions:

• Stent type, stent length, bifurcation lesions, smoking, vascular diameter, hypertension, and diabetes mellitus are identified as significant risk factors for ISR following PCI.
• These findings underscore the importance of patient-specific risk assessment and optimal stent selection in PCI procedures.
• Further research may focus on targeted interventions to mitigate these identified risk factors and reduce ISR rates.