Long-Term Coronary Endothelial Function After Zotarolimus-Eluting Stent Implantation <b>A 9 Month Comparison Between Zotarolimus-Eluting and Sirolimus-Eluting Stents</b>

Dong Il Shin; Ki-Bae Seung; Pum Joon Kim; Kiyuk Chang; Jae Kee Choi; Doo Soo Jeon; Mi-Jeong Kim; Man Young Lee; Wook Sung Chung

doi:10.1536/ihj.49.639

Clinical Studies

Long-Term Coronary Endothelial Function After Zotarolimus-Eluting Stent Implantation

A 9 Month Comparison Between Zotarolimus-Eluting and Sirolimus-Eluting Stents

Dong Il Shin, Ki-Bae Seung, Pum Joon Kim, Kiyuk Chang, Jae Kee Choi, Doo Soo Jeon, Mi-Jeong Kim, Man Young Lee, Wook Sung Chung

Author information

Dong Il Shin
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Ki-Bae Seung
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Pum Joon Kim
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Kiyuk Chang
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Jae Kee Choi
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Doo Soo Jeon
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Mi-Jeong Kim
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Man Young Lee
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea
Wook Sung Chung
Division of Cardiology, Department of Internal Medicine, Kangnam St. Mary’s Hospital, The Catholic University of Korea

Keywords: Endothelium, Drug-eluting stent (DES), Zotarolimus-eluting stent (ZES), Vasoconstriction, Acetylcholine

JOURNAL FREE ACCESS

2008 Volume 49 Issue 6 Pages 639-652

DOI https://doi.org/10.1536/ihj.49.639

Details

Abstract

Implantation of a paclitaxel- or sirolimus-eluting stent (SES) may be associated with endothelial dysfunction. In the present sudy, we compared coronary endothelial function after zotarolimus-eluting stent (ZES) implantation to that after SES implantation.
Patients who had one stent implantation for a single lesion in the left anterior descending artery were enrolled. After 6 to 9 months, coronary endothelial function was assessed in patients who showed no angiographic restenosis. Endothelium-dependent vasomotion was determined after intracoronary infusion of acetylcholine. Also, endothelium-independent vasomotion was assessed after nitrate infusion. A total of 23 patients (11 in the ZES group, 12 in the SES group) were included. In distal and far distal segments, the SES group showed significant vasoconstriction by acetylcholine. However, no significant vasomotion was observed in the ZES group (SES versus ZES: -36.1% versus -3.3% for distal; P = 0.003, -34.7% versus -3.4% for far distal; P = 0.003). Endothelium-independent vasodilatation by nitrates was preserved in all subjects.
SES implantation may induce significant impairment of the endothelium-dependent vasomotor function in the distal portion of the treated vessel, while ZES implantation may not. Our results suggest that the change in coronary endothelial function after stent implantation could be different according to the type of DES.

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