Plaque distribution and vascular remodeling of ruptured and nonruptured coronary plaques in the same vessel: an intravascular ultrasound study in vivo
Clemens von Birgelen, MD, PhD*,
Wolfgang Klinkhart, MD*,
Gary S. Mintz, MD, FACC ,
Alexandra Papatheodorou, MD*,
J.örg Herrmann, MD*,
Dietrich Baumgart, MD*,
Michael Haude, MD*,
Heinrich Wieneke, MD*,
Junbo Ge, MD* and
Raimund Erbel, MD, FACC*
* Department of Cardiology, University Essen, Essen, Germany
Washington Hospital Center, Washington, D.C., USA

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Figure 1 Example of ruptured and nonruptured plaques in right coronary artery. Intravascular ultrasound (IVUS) images of proximal reference, target site and distal reference of ruptured plaque (AC) and nonruptured plaque (DE) are shown on side panels. Sites of IVUS image acquisition are indicated on angiogram (center). Schemes next to IVUS images indicate boundaries of lumen, external elastic membrane and cavity inside ruptured plaque (*). Note eccentric plaque distribution and lumen position at site of plaque rupture (B).
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Figure 2 Vascular remodeling data. Compensatory enlargement was predominant remodeling type in ruptured and nonruptured plaques (66% and 48%), whereas shrinkage was most frequently observed in control plaques (48%). Data are absolute frequencies (n = 29 for each group). The remodeling pattern differed significantly among the three groups (p = 0.0002, Fisher exact test); pairwise comparison revealed significant differences between ruptured and nonruptured plaques vs. control plaques (p = 0.0001 and 0.003, respectively). Striped bars: compensatory, Black bars: no remodeling, White bars: shrinkage.
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