Abstract 21201: Stent Length Remains an Important Risk for Recurrent Events in Women With or Without Diabetes Mellitus After New Generation DES PCI

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Abstract

Introduction: New Generation drug eluting stents (DES) have overcome the limitations of bare metal stents and first generation DES resulting in lower risk of ischemic events in women.

Hypothesis: We sought to compare increasing total stent length per patient for 3-yr outcomes in DM and non-DM women after percutaneous coronary intervention (PCI) with new generation DES.

Methods: The WIN-DES collaboration is a pooled database of women undergoing PCI with coronary stents in 26 randomized trials. We compared total stent length per patient treated with new generation DES in quartiles (Among DM - Q1: 8-18mm, Q2: 18-24mm, Q3: 24-38mm and Q4: 38+mm; among non-DM Q1: 8-18mm, Q2: 18-24mm, Q3: 24-36mm and Q4: 36+mm). 3-yr outcomes were analyzed in a time to event manner and adjusted using multivariable methods. Major adverse cardiovascular events (MACE) were defined as a composite of death, myocardial infarction (MI) or target lesion revascularization (TLR).

Results: The study sample comprised 5403 patients, of which 31.8% (n = 1719) had DM. In both DM and non-DM groups, patients in Q4 had greater prevalence of B2/C type and calcified lesions with smaller stent diameter compared to others. 3-yr MACE increased from Q1-Q4 in DM and non-DM patients, albeit DM patients experienced higher event rates (Figure). After multivariable adjustment, findings were unchanged, and increasing stent length remained associated with greater risk of 3-yr MACE in DM (p-trend=0.003) and non-DM (p-trend <0.0001) patients. No interaction was observed between DM status and stent length for any outcomes.

Conclusions: Despite the use of new generation DES, increasing total stent length per patient was associated with greater risk of MACE in both DM and non-DM women undergoing PCI. Women with DM experienced worse outcomes, and a greater risk of TLR regardless of total stent length. Meticulous attention to stent optimization and post PCI pharmacotherapy is needed to mitigate long-term adverse outcomes in women.

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