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J Interv Cardiol. 2014 Feb;27(1):12-20. doi: 10.1111/joic.12078. Epub 2013 Oct 23.

Impact of occluded culprit arteries on long-term clinical outcome in patients with non-ST-elevation myocardial infarction: 48-month follow-up results in the COREA-AMI Registry.

Author information

1
Cardiovascular Center, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, South Korea.

Abstract

BACKGROUND:

The prognostic impact of occluded culprit arteries in non-ST-elevation myocardial infarction (NSTEMI) patients beyond 12 months has not been investigated.

OBJECTIVES:

The impact of occluded culprit arteries on a composite of cardiac death (CD), recurrent nonfatal MI (RMI), and target vessel revascularization (TVR) in patients who presented with NSTEMI was investigated during a 48-month follow-up using propensity-score (PS) matching.

METHODS:

A total of 2,878 NSTEMI patients in the COREA-AMI (COnvergent REgistry of cAtholic and chonnAm university for Acute MI) Registry were classified according to the angiographic flow of culprit arteries (occlusion [OC], n = 1,070; nonocclusion, n = 1,808). After PS matching, the incidence of the primary end-point, a composite of CD, RMI, and TVR was compared.

RESULTS:

The median follow-up duration was 47.3 months (IQR 32.7-66.2). In the PS-matched population, the 48-month cumulative rates of the primary end-point (27.5% vs. 17.9%, P < 0.001) and each event were higher in the OC group (CD: 9.0% vs. 5.4%, RMI: 16.3% vs. 9.4%, TVR: 10.5% vs. 5.6%, respectively, P < 0.05). In multivariate Cox regression analysis, occluded culprit arteries showed the significant statistical impact on the primary end-point (HR 1.689 [1.385-2.059], P < 0.001) and each event (CD: 1.736 [1.218-2.475], RMI: 1.918 [1.468-2.505], TVR: 2.042 [1.453-2.869], respectively, P < 0.05). Furthermore, in the 12-month landmark analysis, occluded culprit arteries were still associated with higher risk of primary end-point beyond 12 months (P < 0.001).

CONCLUSIONS:

Occluded culprit arteries were independently associated with the higher risk of CD, RMI, and TVR in NSTEMI patients during the 48-month follow-up.

PMID:
24147831
DOI:
10.1111/joic.12078
[Indexed for MEDLINE]

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