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Title: Changes in BNP, hs-CRP and TIMI risk index with addition of tirofiban during primary percutaneous coronary intervention for acute STEMI: a prospective observational cohort study.
Author: Kurt IH, Demirkol S, Ünal I, Batur MK.
Journal: Anadolu Kardiyol Derg; 2012 Mar; 12(2):107-14. PubMed ID: 22281789.
Abstract:
OBJECTIVE: This study aimed to investigate the relationship of tirofiban, added to the treatment of acute ST-elevation myocardial infarction (STEMI) patients underwent primary percutaneous coronary intervention (PCI), with changes in the TIMI risk index (TRI) of TIMI flow, B-type natriuretic peptide (BNP) and high-sensitive C-reactive protein (hs-CRP) levels. METHODS: This single-center, prospective observational cohort study included 102 consecutive patients who were admitted with the diagnosis of acute STEMI (70 male; 54.9±10.4 years). Primary PCI was applied to all cases with STEMI, who applied to our hospital in the first 6 hours due to chest pain complaints. Tirofiban was administered to one group (n=55) (male: 36; 54.1±11.3 years), while the other group was not given tirofiban (n=47) (male: 34; 55.9±9.1 years). The primary end-point was TIMI flow 2 or 3 for reperfusion after primary PCI. Chi-square test, paired t-test or Wilcoxon signed rank test, Spearman correlation analysis and Kaplan-Meier survival analysis were used for statistical analysis where appropriate. RESULTS: BNP level remained the same in the tirofiban group, whereas a significant increase was observed in the group that was not treated with tirofiban (105.9±126.8 versus 261.3±202.3 pg/ml p<0.001). The hs-CRP level tended to rise significantly in both groups despite the treatment (tirofiban group - from 0.67±0.66 to 0.90±0.44 mg/L, p=0.015, non tirofiban group - from 0.51±0.43 to 1.08±0.74 mg/L, p<0.001). BNP and hs-CRP values remained the same in cases with TIMI 2 flow in the tirofiban group, whereas a significant increase was detected in the post-treatment BNP (before 97.8±122.3 after 281.6±217.3 pg/ml, p=0.011) and hs-CRP (before 0.65±0.69; after 1.33±0.80 mg/L, p=0.028) values in the group not treated with tirofiban. In patients with TIMI 3 flow, BNP (tirofiban group before 146.5±114.2; after 184.4±139.4 pg/ml, p=0.011, non tirofiban group before 172.1±297.9; after 295.9±384.9 pg/ml, p<0.001) and hs-CRP levels (tirofiban group before 0.66±0.58; after 0.92±0.65 mg/L, p=0.011, non tirofiban group before 0.81±0.74; after 1.45±1.23 mg/L, p<0.001) were found to be similarly reduced in both treatment groups p<0.05. Three patients with minor hemorrhage did not need blood transfusion. CONCLUSION: It was concluded at the end of them PCI application in STEMI that the addition of tirofiban treatment in patients with ≥TIMI 2 flow and anterior location MI could decrease the expected rise in BNP and CRP values.

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