Stent thrombosis in early-generation drug-eluting stents versus newer-generation everolimus-eluting stent assorted by LVEF.

Abstract

OBJECTIVE:

Everolimus drug-eluting stents (EES) are superior to early-generation drug-eluting stents (DES), releasing sirolimus (SES) or paclitaxel (PES) in preventing stent thrombosis (ST). Since an impaired LVEF seems to increase the risk of ST, we aimed to investigate the difference in outcome of patients with varying LVEF using EES versus early-generation DES.

METHODS:

In a prospective cohort study, we compared the risk of ST in patients in three LVEF subgroups: normal (LVEF >50%), mildly impaired (LVEF >40% and ≤50%) and moderate-severely impaired (LVEF ≤40%). Within these various LVEF groups, we compared EES with SES and PES after adjustment for baseline differences.

RESULTS:

We assessed a cohort of 5363 patients, with follow-up of up to 4 years and available LVEF. Overall definite ST occurred in 123 (2.3%) patients. ST rates were higher in the LVEF moderate-severely impaired group compared with the normal LVEF group (2.8% vs 2.1%; HR 1.82; CI 1.10 to 3.00). Especially early ST (EST) was more frequent in the moderate-severely impaired LVEF group (HR 2.20; CI 1.06 to 4.53). Overall rates of definite ST were lower in patients using EES compared with patients using SES or PES in all LVEF groups. Interaction terms were not statistically significant. ST rates were higher in the moderate-severely impaired LVEF group compared with the normal LVEF group when using SES or PES, but not significantly different when using EES.

CONCLUSIONS:

EES was associated with a lower risk of definite ST compared with early-generation DES. This lower risk was independent of LVEF, even though ST rates were higher in patients with a moderate-severely impaired LVEF.

TRIAL REGISTRATION NO:

MEC-2013-262.

• Authors: Nick van Boven, Stephan Windecker, Victor A Umans, Ron T van Domburg, Isabella Kardys, K Martijn Akkerhuis, Robbert-Jan van Geuns, Patrick W Serruys, Michael Magro, Lorenz Räber, Eric Boersma
• Journal: Heart (British Cardiac Society) (Heart) Vol. 101 Issue 1 Pg. 50-7 (Jan 2015) ISSN: 1468-201X [Electronic] England
• PMID: 25163692 (Publication Type: Comparative Study, Journal Article, Observational Study)
• Copyright: Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

Chemical References

• Cardiovascular Agents
• Everolimus
• Sirolimus

Topics

• Cardiovascular Agents (administration & dosage)
• Coronary Artery Disease (diagnosis, epidemiology, physiopathology, therapy)
• Coronary Thrombosis (diagnosis, epidemiology, physiopathology)
• Drug-Eluting Stents
• Everolimus
• Humans
• Incidence
• Kaplan-Meier Estimate
• Percutaneous Coronary Intervention (adverse effects, instrumentation)
• Proportional Hazards Models
• Prospective Studies
• Prosthesis Design
• Registries
• Risk Factors
• Severity of Illness Index
• Sirolimus (administration & dosage, analogs & derivatives)
• Stroke Volume
• Switzerland (epidemiology)
• Time Factors
• Treatment Outcome
• Ventricular Dysfunction, Left (diagnosis, epidemiology, physiopathology)
• Ventricular Function, Left