title: The effects of prior beta-blocker therapy on serum C-reactive protein levels after percutaneous coronary intervention.
abstract: BACKGROUND
  There are no studies in the literature related to the effect of beta blockers (BB) on changes in C-reactive protein (CRP) levels after percutaneous coronary intervention (PCI).
  
  
  OBJECTIVE
  We designed a prospective randomized study to investigate the impact of BB therapy on CRP in patients who underwent elective PCI.
  
  
  METHODS
  In all, 300 patients with coronary artery disease were included. Patients were randomized to either a metoprolol or to a control group before PCI. Blood samples for CRP levels were obtained before BB treatment, and at the 6th, 24th, and 36th h after PCI.
  
  
  RESULTS
  Of 300 patients, 150 received metoprolol 100 mg/day (mean age, 59.0 +/- 10.2 years; 106 men, 44 women), and 150 received no BB (mean age, 59.8 +/- 9.8 years; 114 men, 36 women) and served as the control group. Baseline clinical characteristics of both groups were similar. Basal CRP levels between the two groups were similar. Of the patients included in the study, 40.8% in the BB group and 39.6% in the control group had elevated basal CRP levels. The CRP levels increased above baseline values in 85% of patients in the BB group and in 89.3% of patients in the control group (p > 0.05) during follow-up. The CRP levels in patients in the BB group at the 6th, 24th, and 36th h were lower than those in the control group; however, this difference did not reach statistical significance.
  
  
  CONCLUSIONS
  Prior BB therapy seems to have no effect on CRP levels after PCI.
authors.affiliation: Department of Cardiology, Başkent University, Ankara, Turkey. ilyasatar@ttnet.net.tr
authors.forename: Ilyas
authors.initials: I
authors.lastname: Atar
authors.forename: Oykü
authors.initials: O
authors.lastname: Gülmez
authors.forename: Asli
authors.initials: A
authors.lastname: Atar
authors.forename: Hüseyin
authors.initials: H
authors.lastname: Bozbas
authors.forename: Aylin
authors.initials: A
authors.lastname: Yildirir
authors.forename: Bülent
authors.initials: B
authors.lastname: Ozin
authors.forename: Mehmet Emin
authors.initials: ME
authors.lastname: Korkmaz
authors.forename: Haldun
authors.initials: H
authors.lastname: Müderrisoglu
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D015906:Angioplasty, Balloon, Coronary; D002097:C-Reactive Protein / Q000032:analysis*; D005260:Female; D006801:Humans; D008297:Male; D008790:Metoprolol / Q000494:pharmacology; D008875:Middle Aged; D011446:Prospective Studies
chemical_list: D000319:Adrenergic beta-Antagonists; D002097:C-Reactive Protein; D008790:Metoprolol