Background: Elevated hs-CRP is associated with worse cardiovascular outcomes in patients with acute myocardial infarction (AMI), but little is known about predictors of elevated hs-CRP after AMI.
Methods: TRIUMPH and VIRGO are prospective AMI registries that assessed hs-CRP levels 30 days after AMI. TRIUMPH assessed hs-CRP levels at 6 months. Multivariable regression analysis was conducted to examine predictors of elevated hs-CRP [≥2.0 mg/L] at 30 days and at 6 months after an AMI (TRIUMPH only).
Results: Of 3410 patients in both registries, 58.6% had elevated hs-CRP 30 days post AMI. Patients with elevated hs-CRP were more likely to be female, black, obese, smokers, to have had higher LDL-C at the time of their AMI, with more peripheral vascular disease and history of heart failure, and were less likely to have had a prior PCI (Table). In TRIUMPH, baseline hs-CRP ≥2 mg/L (n=1301) was significantly associated with elevated hs-CRP at 6 months (p<0.001). Patients with elevated hs-CRP at 6 months (n=407) were more likely to be black, obese, smokers, have peripheral vascular disease and have higher baseline hs-CRP.
Conclusions: hs-CRP remains elevated in a large proportion of patients following AMI. We identified several predictors of elevated hs-CRP at 1 and 6 months post AMI. Further studies are needed to validate the findings and understand the utility of routine screening of hs-CRP in post AMI patients.