Prevalence, predictors, and outcomes of patients with non-ST-segment elevation myocardial infarction and insignificant coronary artery disease: results from the Can Rapid risk stratification of Unstable angina patients Suppress ADverse outcomes with Early implementation of the ACC/AHA Guidelines (CRUSADE) initiative. Am Heart J 2006 Oct;152(4):641-7
Date
09/26/2006Pubmed ID
16996828DOI
10.1016/j.ahj.2006.02.035Scopus ID
2-s2.0-33748681721 (requires institutional sign-in at Scopus site) 163 CitationsAbstract
BACKGROUND: Unlike ST-segment elevation myocardial infarction, the degree of stenosis and physiology of ischemia varies in patients with non-ST-segment elevation myocardial infarction (NSTEMI). The prevalence, predictors, and outcomes of patients with NSTEMI who lack significant epicardial coronary artery disease (CAD) in routine clinical practice remain poorly characterized. We sought to determine the prevalence, predictors, and outcomes of patients with NSTEMI and insignificant CAD.
METHODS: We analyzed 38301 patients with NSTEMI in the CRUSADE quality improvement initiative who underwent cardiac catheterization to determine the prevalence and factors associated with insignificant CAD (all coronary stenoses <50%) and inhospital outcomes for patients with and without CAD. A multivariable model was used to determine the factors associated with insignificant CAD.
RESULTS: A total of 3306 (8.6%) of 38301 patients had insignificant CAD. The strongest multivariable predictors of insignificant CAD were female sex (odds ratio 2.8, 95% CI 2.6-3.1), younger age (odds ratio per 10-year decrease 1.5, 95% CI 1.5-1.6), and lack of current/recent smoking (odds ratio 1.9, 95% CI 1.7-2.0). Inhospital rates of death were 0.65% for patients with insignificant CAD compared with 2.36% for patients with CAD (P < .0001).
CONCLUSION: Insignificant CAD is present in 9% of patients with NSTEMI and is associated with a low incidence of adverse outcomes. The strongest predictors of insignificant CAD are female sex and younger age. These findings underscore the need for research to understand the pathophysiology of myocardial infarction in this population.
Author List
Patel MR, Chen AY, Peterson ED, Newby LK, Pollack CV Jr, Brindis RG, Gibson CM, Kleiman NS, Saucedo JF, Bhatt DL, Gibler WB, Ohman EM, Harrington RA, Roe MTAuthor
Jorge Saucedo MD Chief, Professor in the Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Acute DiseaseAge Distribution
Aged
Angina, Unstable
Coronary Artery Disease
Electrocardiography
Female
Guideline Adherence
Hospital Mortality
Hospitalization
Humans
Male
Middle Aged
Myocardial Infarction
Practice Guidelines as Topic
Prevalence
Prognosis
Risk Assessment
Sex Distribution
Smoking
Syndrome