Nonobstructive coronary artery disease and risk of myocardial infarction.

ABSTRACT:

Importance

Little is known about cardiac adverse events among patients with nonobstructive coronary artery disease (CAD).

Objective

To compare myocardial infarction (MI) and mortality rates between patients with nonobstructive CAD, obstructive CAD, and no apparent CAD in a national cohort.

Design, setting, and participants

Retrospective cohort study of all US veterans undergoing elective coronary angiography for CAD between October 2007 and September 2012 in the Veterans Affairs health care system. Patients with prior CAD events were excluded.

Exposures

Angiographic CAD extent, defined by degree (no apparent CAD: no stenosis >20%; nonobstructive CAD: ≥1 stenosis ≥20% but no stenosis ≥70%; obstructive CAD: any stenosis ≥70% or left main [LM] stenosis ≥50%) and d

SUBMITTER: Maddox TM 

PROVIDER: S-EPMC4893304 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature