Case Report
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World J Cardiol. Aug 26, 2013; 5(8): 313-316
Published online Aug 26, 2013. doi: 10.4330/WJC.v5.i8.313
Longitudinal stent compression of everolimus-eluting stent: A report of 2 cases
Rajesh Vijayvergiya, Alok Kumar, Smit Shrivastava, Naveen K Kamana
Rajesh Vijayvergiya, Alok Kumar, Smit Shrivastava, Naveen K Kamana, Department of Cardiology, Advanced Cardiac Centre, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
Author contributions: All authors were actively involved in management of the index cases.
Correspondence to: Dr. Rajesh Vijayvergiya, MD, DM, FSCAI, FISES, FACC, Associate Professor, Department of Cardiology, Advanced Cardiac Centre, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh 160012, India. rajeshvijay999@hotmail.com
Telephone: +91-172-2756512 Fax: +91-172-2744401
Received: March 19, 2013
Revised: May 1, 2013
Accepted: July 17, 2013
Published online: August 26, 2013
Abstract

Second generation drug eluting stents (DES) have shown better safety and efficacy in comparison to first generation DES, because of thinner struts, nondurable polymers and coating with better anti-proliferative drugs. The newer DES with cobalt alloy base have demonstrated a greater trackability, deliverability, conformability, flexibility and radio-opacity. However, these thin strut stents have a downside of poor longitudinal axial strength, and therefore get easily deformed/compressed at their end with a slight trauma during exchange of various catheters. We hereby report two cases of “longitudinal stent compression (LSC)” of everolimus-eluting stent, which happened during percutaneous coronary intervention of right coronary artery. Both the cases were successfully managed with non-compliant balloon dilatation. Various reasons for LSC and its management are discussed in the article.

Keywords: Complication, Everolimus-eluting stent, Longitudinal stent compression, Percutaneous coronary intervention, Stent structure, Stent deformation

Core tip: The newer second generation drug eluting stent (DES) have shown a greater safety and efficacy compared to first generation DES, because of thinner struts, nondurable polymers and coating with better anti-proliferative drugs. Though their performance is excellent for various type of coronary lesions, one downside is that they are susceptible for compression/ deformation because of poor longitudinal axial strength. We came across longitudinal stent compression (LSC) of everolimus-eluting stent in two cases, which was successfully managed by balloon dilatation. Various reasons for LSC and its management are discussed in the article.