The incidence and clinical impact of stent strut fractures developed after drug-eluting stent implantation

Wook Sung Chung, Chul Soo Park, Ki Bae Seung, Pum Joon Kim, Jong Min Lee, Bon Kwon Koo, Yang Soo Jang, Joo Young Yang, Jung Han Yoon, Doo Il Kim, Young Won Yoon, Jong Seon Park, Yoon Haeng Cho, Seung Jung Park

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Abstract

Background: Cases of stent strut fractures (SSFs) after DES implantation have been reported, but the clinical significance is uncertain. Then we sought to define the incidence and clinical implications of SSFs developed after drug-eluting stent (DES) implantation. Methods: We gathered SSF cases from 13 centers in Korea retrospectively. SSF was defined as angiographically visible interrupted connection of stent struts or fewer visible stent struts at the suspected site than normally looking stented area on intravascular ultrasound (IVUS). Furthermore, we classified the SSFs cases into three patterns (disruption, avulsion, and displacement) according to the interruption site and absence or presence of displacement. Results: Thirty-seven SSFs (2 disruption, 7 avulsion, 28 displacement) were detected in 35 lesions in 35 patients. All fractured stents were sirolimus-eluting stents (SESs). The incidence of SSFs was 0.84% and the proportion of restenosis related with SSF was 6.3% after SES implantation driven from the data of 8 centers. The average length of stent used was 49 mm, overlapping stenting was performed in 19 lesions (54%), and the average maximal angulation in the initial coronary angiography was 67°. Twenty-four fractures (65%) were associated with focal in stent restenosis and 11 fractures (30%) with target lesion revascularization. No acute coronary syndrome developed. Conclusions: SSF after DES implantation might be a considerable complication after DES implantation especially after SES implantation.

Original languageEnglish
Pages (from-to)325-331
Number of pages7
JournalInternational Journal of Cardiology
Volume125
Issue number3
DOIs
Publication statusPublished - 2008 Apr 25

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All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

Cite this

Chung, W. S., Park, C. S., Seung, K. B., Kim, P. J., Lee, J. M., Koo, B. K., Jang, Y. S., Yang, J. Y., Yoon, J. H., Kim, D. I., Yoon, Y. W., Park, J. S., Cho, Y. H., & Park, S. J. (2008). The incidence and clinical impact of stent strut fractures developed after drug-eluting stent implantation. International Journal of Cardiology, 125(3), 325-331. https://doi.org/10.1016/j.ijcard.2007.02.033