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  4. Management of Stent Malapposition

It is recommended that if stent malapposition is detected, further stent expansion should be considered during the intervention if there is stent under-expansion. Stent under-expansion is defined as an MSA of the proximal segment <90% of the proximal reference lumen area or an MSA of the distal segment <90% of the distal reference lumen area.1

1Lancet 2016; 388:2618-28.

 

Figure I. An example of a malapposed stent which met criteria for stent under-expansion. A decision was made to further expand the stent with multiple balloon inflations. The following image demonstrates the same vessel with significantly improved apposition of the stent struts.

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