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Published on: January 28, 2020
Response of serum C-reactive protein to percutaneous coronary intervention has prognostic value
Nawsad Saleh1, Bertil Svane, Lars-Olof Hansson
1Department of Cardiology, Karolinska University Hospital, Karolinska Institute, Stockholm, Sweden. nawzad.saleh@karolinska.se
Insights
Elevated C-reactive protein (CRP) after percutaneous coronary intervention (PCI) predicts long-term adverse outcomes, including death or myocardial infarction. This inflammatory marker offers valuable risk stratification post-PCI, independent of procedural injury.
Area of Science:
- Cardiology
- Biomarkers
- Interventional Cardiology
Background:
- Limited data exists on C-reactive protein (CRP) and long-term prognosis after percutaneous coronary intervention (PCI).
- Percutaneous coronary intervention is known to elicit an inflammatory response.
- The prognostic significance of the CRP response to PCI requires further investigation.
Purpose of the Study:
- To test the hypothesis that the CRP response following PCI has prognostic value.
- To evaluate the association between CRP levels and long-term outcomes after PCI.
- To determine if CRP serves as an independent predictor of adverse events post-PCI.
Main Methods:
- Investigated 891 patients undergoing PCI for stable or unstable angina.
- Measured serum CRP and cardiac troponin T before and after PCI.
- Followed patients for a mean of 2.6 years, with endpoints of death or nonfatal myocardial infarction.
Main Results:
- A more than 2-fold increase in CRP was observed post-PCI.
- Patients in the highest tertile of CRP response had an increased risk of death or nonfatal myocardial infarction.
- 21% of patients experienced myocardial infarction during the procedure.
Conclusions:
- Increased serum CRP post-PCI is an independent predictor of death or nonfatal myocardial infarction.
- The prognostic value of CRP is independent of myocardial injury sustained during the procedure.
- CRP measurements may enhance risk stratification for patients undergoing PCI.
Background:
Data are sparse regarding the association between C-reactive protein (CRP) and percutaneous coronary intervention (PCI) in long-term prognosis. Previous studies have shown that PCI evokes an inflammatory response. We tested the hypothesis that the CRP response to PCI has a prognostic value.
Methods:
We investigated 891 consecutive patients presenting with stable or unstable angina pectoris, with serum concentrations of cardiac troponin T < or =0.03 microg/L, who were undergoing a variety of PCIs. Serum concentrations of CRP and cardiac troponin T were determined before and the day after PCI. The mean follow-up time after PCI was 2.6 years, and the endpoint was death or nonfatal myocardial infarction.
Results:
Seventy-six patients reached the endpoint (4.6% death, 3.9% nonfatal myocardial infarction), whereas 21% developed myocardial infarction during the procedure. CRP increased more than 2-fold after the procedure. Patients in the third tertile of the CRP response to PCI had an increased risk for death or nonfatal myocardial infarction in multivariate analysis.
Conclusions:
Increased serum CRP in response to PCI is an independent predictor of death or nonfatal myocardial infarction independent of myocardial injury during the procedure. CRP determinations might be of value in risk stratification after PCI.
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