1. Acute stent malapposition: Harmful or harmless?

    Acute stent malapposition: Harmful or harmless?

    Acute Stent malapposition (ASM) is the post-procedure lack of contact of stent struts with vessel wall. Operators are naturally displeased when ASM is revealed by intravascular imaging modalities, such as optical coherence tomography (OCT), because previous studies have reported presence of ASMs in patients suffering from stent thrombosis [1–3]. Actually, ASMs are not that rare [4–6]. We should be aware of what we should do when we encounter the cases of ASM. Many of us may consider postdilation to correct a malapposition with a larger balloon or higher pressure, especially in cases with coexisting stent underexpansion.

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