Plaque rupture in non-obstructive lesions of non-IRAs was present in 12% of AMI patients. Larger plaque volume, positive remodeling, and thinner fibrous cap were associated with rupture. More than half of untreated ruptures transitioned into stable morphologies. Thin-cap fibroatheroma was the most frequent underlying morphology of new-onset rupture.
Kakizaki et al. (Mon,) studied this question.