High incidence of thrombus formation at 18 months after paclitaxel-eluting stent implantation: angioscopic comparison with sirolimus-eluting stent.
نویسندگان
چکیده
BACKGROUND Difference of neointimal formational pattern and incidence of thrombus formation between sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES) at 18 months after stent implantation has not previously been reported. METHODS We retrospectively enrolled 35 event-free patients who received SES (15 patients, 18 stents) or PES (20 patients, 23 stents) implantation with 18-month follow-up coronary angioscopy. We divided our patients into SES or PES groups and compared neointimal coverage pattern and incidence of red mural thrombus formation between the 2 groups. Neointimal coverage grades were classified into 4 categories. Minimum neointimal coverage grade, maximum grade, and heterogeneity score were assessed in each stent. Heterogeneity score was calculated by subtracting minimum from maximum grade within one stent. RESULTS Minimum neointimal coverage grade of PES was significantly lower than that of SES (0.70 +/- 0.64 vs 1.33 +/- 0.69, P = .005), whereas maximum grade was not significantly different (2.48 +/- 0.73 vs 2.22 +/- 0.73, P = .218). Heterogeneity score and incidence of red mural thrombus of PES were higher than those of SES (1.78 +/- 0.80 vs 0.89 +/- 0.76, P = .002 and 70% vs 11%, P < .001). CONCLUSIONS The present study revealed that PES shows more heterogeneous neointimal coverage and higher incidence of thrombus formation as compared with SES at 18 months after stent implantation.
منابع مشابه
Serial angioscopic evidence of incomplete neointimal coverage after sirolimus-eluting stent implantation: comparison with bare-metal stents.
BACKGROUND The time course of neointimal formation after stent implantation has not been studied extensively by angioscopy in the drug-eluting stent era. METHODS AND RESULTS Serial angioscopic findings at first follow-up (3.6+/-1.1 months), second follow-up (10.5+/-1.6 months), and third follow-up (21.2+/-2.2 months) after stent implantation were compared between sirolimus-eluting stents (SES...
متن کاملAtherosclerotic and thrombogenic neointima formed over sirolimus drug-eluting stent: an angioscopic study.
OBJECTIVES We sought to examine by angioscopy the neointima formation and thrombogenic potential of the neointima after deployment of a drug-eluting stent (DES). BACKGROUND Late stent thrombosis after DES implantation, a major safety concern, has been associated with poor strut coverage by neointima. Intracoronary angioscopy provides a method for visual evaluation of stent coverage by neointi...
متن کاملComparison of neointimal coverage of sirolimus-eluting stents and paclitaxel-eluting stents using optical coherence tomography at 9 months after implantation.
BACKGROUND The differences between using sirolimus-eluting stents (SESs) and paclitaxel-eluting stents (PESs) in the vascular response at 9 months after implantation were examined with optical coherence tomography (OCT). METHODS AND RESULTS OCT was carried out in 33 SESs [33 patients, 19 with acute coronary syndrome (ACS) and 14 with stable angina pectoris (SAP)] and 27 PESs (27 patients, 15 ...
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Background: Cardiovascular diseases alone have become the leading cause of death worldwide. One of the treatment methods cardiovascular disease is angioplasty. This study aimed to investigate the clinical results after coronary artery angioplasty, based on the incidence of major cardiovascular events with emphasis on stent types. Methods: In this retrospective cross-sectional study, the preval...
متن کاملLack of association between large angiographic late loss and low risk of in-stent thrombus: angioscopic comparison between paclitaxel- and sirolimus-eluting stents.
BACKGROUND It recently has been hypothesized that a larger late loss may have a protective role against stent thrombosis. The relationship between angiographic late loss and the presence of thrombus based on angioscopic findings within paclitaxel-eluting stents (PES) and sirolimus-eluting stents (SES) was investigated in this study. METHODS AND RESULTS Prospective 6-month follow-up angiograph...
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عنوان ژورنال:
- American heart journal
دوره 159 5 شماره
صفحات -
تاریخ انتشار 2010