Neointimal Coverage of Stents Evaluated with Optical Coherence Tomography
Author Information
Author(s): Chen B, Ma F Y, Luo W, Ruan J H, Xie W L, Zhao X Z, Sun S H, Guo X M, Wang F, Tian T, Chu X W
Primary Institution: Beijing Electric Power Hospital
Hypothesis
To analyse the neointimal coverage of sirolimus-eluting stent (SES) and bare-metal stent (BMS) visualised in vivo by optical coherence tomography (OCT).
Conclusion
OCT imaging can clearly visualise stent apposition and neointimal coverage of stent struts, revealing higher rates of incomplete strut apposition and lack of coverage in SES compared to BMS.
Supporting Evidence
- OCT images showed all stent struts with complete apposition in BMS, while SES had more incomplete apposition.
- Significant differences in strut coverage were found between SES and BMS groups.
- The mean maximal and minimal neointimal thickness in SES was significantly less than in BMS.
- One patient experienced acute myocardial infarction after SES stenting, highlighting potential risks.
Takeaway
This study looked at how well different types of heart stents are covered by tissue after being placed in the body, finding that one type of stent had more problems with coverage than the other.
Methodology
OCT images were obtained in 26 coronary vessels of 24 patients at various follow-up times after stent deployment, comparing strut apposition and neointimal thickness.
Limitations
OCT imaging cannot penetrate blood, requiring a blood-free environment, and has limited depth of penetration.
Participant Demographics
24 patients (21 men and 3 women) with coronary artery disease.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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