title: Preoperative CRP levels is not predictive early renal dysfunction after coronary artery bypass surgery.
abstract: BACKGROUND
  The aim of this retrospective study is to determine the correlation between preoperative CRP levels and the early renal dysfunction after cardiac surgery.
  
  
  METHODS
  From January 2012 to December 2013, values for preoperative CRP were available for 546 unselected patients undergoing cardiac operations. CRP was used to divide this cohort in two groups: a normal CRP levels group (Group I) of 432 patients with CRP of less than 0.5 mg/dL, and a high CRP levels group (group II) of 114 patients with a CRP of 0.5 mg/dL or more.
  
  
  RESULTS
  Median CRP preoperative values were significantly different in the group II (2.49±1.03 mg/dL) than in the group I (0.32±0.14 mg/dL; P < 0.0001). Median CRP postoperative values were significantly different in the group I (17.62±2.99) than in the group II (23.13±3.01; P < 0.0001). Preoperative levels of serum blood urea nitrogen (BUN), creatinine and CrCl were not significantly different between group I and group II. Postoperative levels of BUN, Cr and CrCl between the two groups were not significantly different.
  
  
  CONCLUSIONS
  The early Cr and CrCl levels after surgery are not significantly different in group I and group II. The early renal function after CABG is not correlated with the preoperative CRP levels.
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Veysel
authors.initials: V
authors.lastname: Sahin
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Mehmet Besir
authors.initials: MB
authors.lastname: Akpinar
authors.affiliation: Division of Clinical Microbiology and Infectious Diseases, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Erol
authors.initials: E
authors.lastname: Sevim
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Ihsan Sami
authors.initials: IS
authors.lastname: Uyar
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Ahmet Feyzi
authors.initials: AF
authors.lastname: Abacilar
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Halil
authors.initials: H
authors.lastname: Uc
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Funda
authors.initials: F
authors.lastname: Tetik
authors.affiliation: Division of Anesthesiology, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Ertan
authors.initials: E
authors.lastname: Damar
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Faik Fevzi
authors.initials: FF
authors.lastname: Okur
authors.affiliation: Division of Cardiac Surgery, Sifa University Medical Faculty Izmir, Turkey.
authors.forename: Emin Alp
authors.initials: EA
authors.lastname: Alayunt
keywords: C-reactive protein; cardiopulmonary bypass; renal function