All stent strut malappositions are not created equal

Key Points

• The current meta-analysis evaluates the relationship of late incomplete stent apposition (LISA) observed either by IVUS or OCT 6–18 months after PCI and long-term outcomes, particularly in regard to stent thrombosis (ST) and has demonstrated a small but significant increase in ST with LISA.
• The results of the current study do not apply to acute stent malapposition whose relevance to adverse outcomes is uncertain based on current evidence and a malapposition classification based on presence, length, and severity of malapposed struts.
• A classification of stent malapposition based on cause of malapposition is proposed as a method to determine prognostic importance of acute incomplete stent apposition.

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