Impact of Coronary Collaterals on Long-term Prognosis in Patients Treated With Primary Angioplasty.

Introduction And Objectives: The beneficial effect of coronary collateral circulation (CC) in patients with ST-segment elevation myocardial infarction is controversial. The aim of this study was to evaluate the impact of CC before reperfusion with primary angioplasty (PA) on the long-term prognosis of these patients.

Methods: Retrospective observational study of a cohort of 947 patients treated with PA and TIMI grade ≤ 1 flow in a single center from 2005 to 2013.

[Retrograde angioplasty: an option for total coronary artery occlusions].

The safety and effectiveness of angioplasty for chronic total occlusions of the coronary arteries have been demonstrated in several studies, but the success rate is less than for conventional interventions. The complexity of the procedures presents a major challenge. In selected cases, performing angioplasty of the occlusion via a retrograde approach has been used as an alternative.