1. Classification of mechanisms of strut malapposition after angiographically optimized stent implantation: An optical coherence tomography study

    Classification of mechanisms of strut malapposition after angiographically optimized stent implantation: An optical coherence tomography study

    Aims To elucidate causes and extent of strut malapposition in angiographically optimized stenting. Methods and Results Using a new classification system for strut malapposition, the mechanisms of stent strut malapposition were classified as localized lumen enlargement, vessel asymmetry, stent undersizing, strut underexpansion and stent deployment issue. Stent implantations ( n  = 110) in 100 consecutive patients undergoing optical coherence tomography (OCT) after the operator considered the stent as optimally deployed angiographically were reviewed to determine if strut apposition was complete. 127,894 stent struts in 110 stents were analyzed. There were 6,644 struts malapposed (5.2% ±7.3%), with strut malapposition ...

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