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Incidence of stent thrombosis in patients with drug eluting stents and short-term dual antiplatelet therapy.

AIMS
This study sought to investigate the incidence of stent thrombosis (ST) in patients treated with drug-eluting stents (DES) and clearly defined short-term dual antiplatelet therapy (DAT) for three or six months for sirolimus-eluting stents (SES) or paclitaxel-eluting stents (PES), respectively.


METHODS AND RESULTS
A series of 1023 consecutive patients with 1,414 stented lesions and prescribed short-term DAT were followed for at least two years after DES implantation. The individual durations of DAT, the rate of ischaemic events, and survival status were assessed. Follow-up was completed for 1017 patients (99.4%) with a mean follow-up of 3.0 +/- 0.7 years. DAT duration was 2.8 +/- 0.4 and 5.9 +/- 0.8 months in patients with SES and PES, respectively. Adherence to continued single antiplatelet therapy was 98.4%. We identified 14 patients with definite ST (1.4%) and no patients with probable ST with a cumulative incidence of 0.6% at 30 days, of 0.8% at one year, of 1.2% at 2 years, and of 1.4% at three years.


CONCLUSIONS
Definite or probable ST after DES implantation and short DAT occurs with a cumulative incidence of 1.4% at 3 years if excellent patient adherence to the continued single antiplatelet therapy can be achieved.