Conclusion of Stent Apposition Assessment With Optical Coherence Tomography

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Summary

Conclusion

OCT can be useful in identifying lesions with a high risk of ISA and guide the procedure strategy in order to minimise risk and optimize the final result.

Factors Influencing Incomplete Stent Apposition

1. Stent Design
2. Lesion Characteristics
   • Calcification
   • Bifurcation
   • Length of Lesion
3. Procedural Technique
   • High-pressure Implantation
   • Pre-dilatation
   • Post-dilatation

At follow-up, OCT can assess the presence of late acquired malapposition and provide insight into its mechanisms. Finally, stent apposition has been observed more often with OCT than IVUS; IVUS studies suggest a possible relationship between incomplete DES apposition and subsequent thrombosis. However, the clinical significance of incomplete stent strut apposition as evaluated with OCT is not completely understood.

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