Long-term endothelial dysfunction after coronary artery stenting
Paulo R. A. Caramori, MD, FACCa,b,
Valter C. Lima, MDa,b,
Peter H. Seidelin, MDa,b,
Gary E. Newton, MDa,b,
John D. Parker, MD, FACCa and
Allan G. Adelman, MD, FACCa,b
a Bayer Inc., Cardiovascular Clinical Research Laboratory, Toronto, Canada
b Department of Medicine, Mount Sinai Hospital, University of Toronto, Toronto, Canada

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Figure 1 Percent change in mean luminal diameter of the left anterior descending coronary artery (A) and circumflex artery (B) from baseline, in response to intracoronary acetylcholine infusion. *p = 0.02 versus balloon angioplasty and directional atherectomy groups. Open triangle = Stent group. Closed circle = Balloon angioplasty group. Open square = Directional atherectomy group.
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Figure 2 Representative coronary angiograms from patients previously treated with coronary stenting (A), balloon angioplasty (B), and directional atherectomy (C) in the control state (Control) and after acetylcholine 104 molar infusion (Ach 104). Arrows indicate the intervened left anterior descending artery.
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Figure 3 Mean luminal diameter of the left anterior descending coronary artery at baseline (C) and in response to maximal intracoronary acetylcholine infusion (Ach) for all the study patients. BA = balloon angioplasty group; DCA = directional coronary atherectomy group; Stent = stent group. *p = 0.02 versus balloon angioplasty and directional atherectomy groups.
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