Serial changes of coronary endothelial function and arterial healing after paclitaxel-eluting stent implantation View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2016-01

AUTHORS

Yoshiaki Mitsutake, Takafumi Ueno, Fumiaki Ikeno, Shinji Yokoyama, Ken-ichiro Sasaki, Takaharu Nakayoshi, Naoki Itaya, Hidetoshi Chibana, Masahiro Sasaki, Yoshihiro Fukumoto

ABSTRACT

Several studies have shown coronary endothelial dysfunction and delayed arterial healing associated with first-generation drug-eluting stents. However, it remains unclear whether those issues persist for a longer term. We thus evaluated serial changes in endothelial function and intra-stent condition after paclitaxel-eluting stents (PES) implantation. Eight patients with stable effort angina were assessed at 9 and over 24 months (1st and 2nd follow-up) after PES implantation. Endothelial function was evaluated with intracoronary infusion of acetylcholine (Ach). Vascular responses were quantitatively measured. Intra-stent condition was evaluated using angioscopy. We assessed (1) the degree of neointimal coverage over the stent (grade 0: no coverage to grade 3: full coverage); (2) presence of yellow intima inside the stent, and (3) existence of in-stent thrombus. Vasomotions proximal to the stent at 2nd follow-up significantly improved compared with 1st follow-up (p = 0.04), whereas vascular responses at the distal segment did not differ between 1st and 2nd follow-up (p = 0.19). From the angioscopic study, the average of coverage grading was comparable between the 2 points (0.9 ± 0.8 vs. 1.3 ± 1.0, p = 0.20). In addition, the incidence of yellow intima and in-stent thrombus did not differ between 1st and 2nd follow-up (yellow intima; 50 vs. 37.5 %, p = 1.0, thrombus; 75 vs. 50 %, p = 0.61). Endothelial dysfunction and delayed healing with PES could attenuate gradually, but these issues may persist over 24 months in some patients. More... »

PAGES

21-28

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12928-015-0341-5

DOI

http://dx.doi.org/10.1007/s12928-015-0341-5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1034812750

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/26113198


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46 schema:description Several studies have shown coronary endothelial dysfunction and delayed arterial healing associated with first-generation drug-eluting stents. However, it remains unclear whether those issues persist for a longer term. We thus evaluated serial changes in endothelial function and intra-stent condition after paclitaxel-eluting stents (PES) implantation. Eight patients with stable effort angina were assessed at 9 and over 24 months (1st and 2nd follow-up) after PES implantation. Endothelial function was evaluated with intracoronary infusion of acetylcholine (Ach). Vascular responses were quantitatively measured. Intra-stent condition was evaluated using angioscopy. We assessed (1) the degree of neointimal coverage over the stent (grade 0: no coverage to grade 3: full coverage); (2) presence of yellow intima inside the stent, and (3) existence of in-stent thrombus. Vasomotions proximal to the stent at 2nd follow-up significantly improved compared with 1st follow-up (p = 0.04), whereas vascular responses at the distal segment did not differ between 1st and 2nd follow-up (p = 0.19). From the angioscopic study, the average of coverage grading was comparable between the 2 points (0.9 ± 0.8 vs. 1.3 ± 1.0, p = 0.20). In addition, the incidence of yellow intima and in-stent thrombus did not differ between 1st and 2nd follow-up (yellow intima; 50 vs. 37.5 %, p = 1.0, thrombus; 75 vs. 50 %, p = 0.61). Endothelial dysfunction and delayed healing with PES could attenuate gradually, but these issues may persist over 24 months in some patients.
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