High-risk myocardial infarction in the young: The VALsartan In Acute myocardial iNfarcTion (VALIANT) trial

Anderson, R.E. et al. (2008) High-risk myocardial infarction in the young: The VALsartan In Acute myocardial iNfarcTion (VALIANT) trial. American Heart Journal, 155(4), pp. 706-711. (doi:10.1016/j.ahj.2007.11.016)

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Publisher's URL: http://dx.doi.org/10.1016/j.ahj.2007.11.016

Abstract

Background Advanced age is a well-established prognostic risk factor after acute myocardial infarction (AMI), yet approximately 10% of MIs occur in patients <45 years. We examined characteristics, cardiovascular outcomes, and the influence of risk factors on outcomes in young survivors of AMI. Methods Fourteen thousand seven hundred three patients enrolled in the VALsartan In Acute myocardial iNfarcTion (VALIANT) trial were divided into 3 age groups: 18 to <45 (n = 803), 45 to <65 (n = 6185), >= 65 years (n = 7715). Multivariate Cox regression was used to compare cardiovascular event rates and assess the impact of risk factors on outcomes. Results The youngest patients had less diabetes, hypertension, and history of MI and were more likely to be male (18 to <45 years, 88%; >= 65 years, 59.1 %), nonwhite (18 to <45 years, 9.6%; >= 65 years, 5%), current smokers (18 to <45 years, 73.7%; >= 65 years, 15.9 %), obese (18 to <45 years, 37.9%; >= 65 years, 25.1%), and dyslipidemic at randomization (18 to <45 years, 43.1%; >= 65 years, 32.7%). Adjusted relative risks of smoking (18 to <45 years, hazard ratio [HR] 1.6 [95 % confidence interval {CI} 1.1-2.5]; >= 45 years, HR 0.9 [95% CI 0.9-1.1]; P=.014) and hypertension (18 to <45 years, HR 1.8 [95% CI 1.3-2.6]; >= 45 years, HR 1.2 [95% CI 1.1-1.3]; P=.044) were higher in the young, with significant interactions observed between age and these risk factors. Conclusions After AMI, risk factors and outcomes of the young differ substantively from their older counterparts. The influence of hypertension and smoking is more profound in the young, underscoring the need for aggressive risk factor modification post-AMI.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McMurray, Professor John
Authors: Anderson, R.E., Pfeffer, M.A., Thune, J.J., McMurray, J.J., Califf, R.M., Velazquez, E., White, H.D., Rouleau, J.L., Skali, H., Maggioni, A., and Solomon, S.D.
College/School:College of Medical Veterinary and Life Sciences
College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:American Heart Journal
Publisher:Elsevier
ISSN:0002-8703

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