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Figure 5 Crush Stenting and Side-Branch "Jail" Before and After 1-Step Kissing Post-Dilation
Stent struts opposite the SB ostium have been removed electronically (A) to allow clear viewing of the SB ostium (B and D) for these Cypher Select stents (Cordis Corporation, Miami Lakes, Florida). Before kissing post-dilation, there are 2 layers of stent struts separating the MB stent lumen from the SB lumen (B). Conventional 1-step kissing balloon post-dilation (C) partially clears the struts separating MB from SB but residual struts overlie the SB ostium (D, arrow). This residual metallic stenosis is not visible on angiography (E and F), nor is it visible when the stent is viewed on the bench from its side (E). It was present with all stent designs at all angles tested after classical crush and 1-step kissing. Abbreviations as in Figure 1.
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