Abstract
The purpose of this study was to clarify a cut-off value for acute incomplete stent apposition (ISA) volume and maximum-depth to predict ISA resolution at 1- and 3-month follow-up in patients treated with cobalt–chromium everolimus-eluting stents. In total, 95 cases and 103 stents were registered in the MECHANISM-Elective sub-study. Acute ISA-volume was measured by the trapezoid rule. ISA resolution of cut-off value at 1- and 3-month was estimated by ISA-volume and maximum-depth using receiver operatorating characteristic curve analysis. The total number of analysed acute ISAs was 202 in the 1-month group and 225 in the 3-month group. A total of 123 ISAs at 1-month and a total of 169 ISAs at 3-month had been resolved. The cut-off value of ISA resolution by ISA-volume was 0.169 mm3 at 1-month (AUC: 0.725, sensitivity: 72.2%, specificity: 61.0%) and 0.295 mm3 at 3-month (AUC: 0.757, sensitivity: 75.0%, specificity: 60.4%). The cut-off value of ISA resolution by ISA maximum-depth demonstrated was 0.285 mm at 1-month (area under curve (AUC): 0.789, sensitivity: 70.9%, specificity: 69.9%) and 0.305 mm at 3-month (AUC: 0.663, sensitivity: 60.7%, specificity: 66.9%). Incidence of ISA resolution was significantly lower in combination with cut-off values of ISA-volume and maximum-depth (33%, p < 0.001, at 1-month; 56%, p = 0.003, at 3-month). Combining the cut-off value of ISA-volume with the maximum-depth might be helpful to consider the endpoint of the PCI procedure.
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Acknowledgements
The authors are deeply grateful to the core-analysis laboratory members: Kanako Omiya and Yumiko Okuyama (ARCHIMEDES (The Academic ResearCH Group for Exploring Undiscovered Mechanisms of Cardiovascular DiseasES), Kayoko Fujiwara (secretary, ICAL) and Tatsuya Shinke (image technician, ICAL).
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Tomonori Itoh: Lecture honoraria (Daiichi-Sankyo, Abbott Vascular Japan). Hiromasa Otake: Lecture honoraria (Abbott Vascular Japan). Yoshihiro Morino: Research grant (Daiichi Sankyo), Lecture honoraria (Daiichi-Sankyo, Abbott Vascular). Toshiro Shinke: Research grant (Daiichi-Sankyo), Lecture honoraria (Daiichi Sankyo, Abbott Vascular). Any other authors do not have any conflict of interest.
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Uchimura, Y., Itoh, T., Oda, H. et al. Cut-off value of mal-apposition volume and depth for resolution at early phase of acute incomplete stent apposition after CoCr-EES implantation. Int J Cardiovasc Imaging 35, 1979–1987 (2019). https://doi.org/10.1007/s10554-019-01657-y
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DOI: https://doi.org/10.1007/s10554-019-01657-y