Pathological correlates of late drug-eluting stent thrombosis: strut coverage as a marker of endothelialization
- 1Cardiac Unit, Department of Internal Medicine, Massachusetts General Hospital, Boston, USA.
- 0Cardiac Unit, Department of Internal Medicine, Massachusetts General Hospital, Boston, USA.
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View abstract on PubMed
Summary
This summary is machine-generated.Late stent thrombosis (LST) risk increases with more uncovered stent struts. Incomplete endothelial healing is a key factor in LST development, highlighting the importance of stent coverage.
Area Of Science
- Cardiovascular Research
- Biomedical Engineering
- Pathology
Background
- Late stent thrombosis (LST) is a significant concern following drug-eluting stent implantation.
- Clinical predictors of LST are known, but morphological and histological factors remain unclear.
Purpose Of The Study
- To investigate the morphological and histological correlates of LST.
- To identify predictors of LST in drug-eluting stents.
Main Methods
- Analysis of 62 drug-eluting stent lesions from 46 human autopsies (>30 days post-implantation).
- Comparison of 28 thrombosed lesions with 34 non-thrombosed lesions using morphometric and histological analyses.
- Logistic generalized estimating equations modeling to identify predictors of LST.
Main Results
- Endothelialization was the strongest predictor of stent thrombosis.
- The ratio of uncovered to total stent struts was the best morphometric predictor.
- Increased uncovered struts significantly correlated with higher LST risk (OR > 30% uncovered struts = 9.0).
Conclusions
- Incomplete endothelial coverage is the primary histological predictor of LST.
- The ratio of uncovered stent struts is the best morphometric predictor of LST.
- Heterogeneity in stent healing and incomplete healing are crucial in LST pathophysiology.
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