JACC Case Rep
September 2025
Background: Cardiac syncope due to sinus arrest may result from either a vasovagal cardioinhibitory mechanism or an intrinsic sinus node dysfunction.
Case Summary: A 67-year-old woman with a recently diagnosed right hilar mass presented with new-onset episodes of syncope associated with sinus arrest. Resting electrocardiogram was normal, and no electrolyte abnormalities were identified.
Background: In the observational SUPER-MIMI study, a minimalist immediate mechanical intervention (MIMI) technique-which involves restoring blood flow in the acute phase and postponing stenting-was shown to be safe and effective among patients with a high thrombotic burden after ST-segment elevation myocardial infarction (STEMI). We aim to assess whether a non-stenting strategy after a SUPER-MIMI strategy was safe at 4-year follow-up in patients enrolled in the SUPER-MIMI study who were not stented.
Methods: This prospective cohort study assessed the long-term outcomes of a subgroup of patients included in the SUPER-MIMI study.