Abstract:
AIMS:Microvascular obstruction (MVO) is associated with a worse prognosis in patients with ST-elevation myocardial infarction (STEMI) treated by primary percutaneous coronary intervention (PCI). However, data about incidence, clinical outcome and correlates of MVO in latecomers after STEMI are still lacking. METHODS:We prospectively enrolled consecutive patients that were latecomers after STEMI (symptoms onset >12h) undergoing PCI. We performed an angiographic analysis to assess the occurrence of MVO [defined as TIMI flow grade ≤2 or 3 with a myocardial blush grade <2]. Moreover, we performed a clinical and echocardiographic follow-up to assess the occurrence of major adverse cardiovascular events (MACE), defined as the composite of cardiac death, myocardial infarction and rehospitalization for heart failure, and to evaluate left ventricle remodelling. RESULTS:Seventy-eight patients were enrolled [mean age 67.58±11.72years, 57 (73%) male; mean time of symptom onset 23.14±16.06h] with a mean follow-up time of 29.7±14.1months. MVO occurred in 39 (50%) patients. Patients with MVO had a higher rate of MACE [18 (46%) vs. 3 (8%), p<0.001] and LV remodelling [25 (64%) vs. 6 (15%), p<0.001] compared with patients without MVO. By multivariable Cox regression MVO and left anterior descending artery were independent predictors of MACE. CONCLUSIONS:Latecomers after STEMI have a high risk to develop MVO that is related to an adverse prognosis. Appropriate management and follow-up strategies should be implemented in such high-risk patients group.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Montone RA,Niccoli G,Minelli S,Fracassi F,Vetrugno V,Aurigemma C,Burzotta F,Porto I,Trani C,Crea Fdoi
10.1016/j.ijcard.2017.02.023subject
Has Abstractpub_date
2017-06-01 00:00:00pages
30-35eissn
0167-5273issn
1874-1754pii
S0167-5273(16)34261-9journal_volume
236pub_type
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