Does Postsystolic Motion or Shortening Predict Recovery of Myocardial Function After Primary Percutanous Coronary Intervention?

In patients with ST-elevation myocardial infarction postsystolic motion or shortening appears more frequently in the acute phase in myocardial segments with impaired systolic function compared with normally functioning segments. However, presence of postsystolic contraction is not associated with improvement in strain or wall-motion score at follow-up, and does not seem to be a marker of viability.