title: Use of nefidipine and acute kidney injury incidence in postoperative of myocardial revascularization surgery with cardiopulmonary bypass.
abstract: OBJECTIVE
  The objective of this work was to evaluate the influence of the use of nifedipine on the outcome of renal function in patients undergoing myocardial revascularization with extracorporeal circulation.
  
  
  METHODS
  The casuistics and variables related to extracorporeal circulation were studied. Serum creatinine levels were measured preoperatively, 24, 48 hours and on 7th day postoperatively. Renal failure was defined as an increase in 30% of serum creatinine levels at 24 or 48 hours postoperatively compared to those at baseline. Patients were assigned to four groups: G1 (patients who received nifedipine preoperatively); G2 (patients who received nifedipine postoperatively); G3 (patients who received nifedipine pre and postoperatively) and G4 (patients who did not receive nifedipine).
  
  
  RESULTS
  The mean serum creatinine levels postoperatively presented greater rise in G4 (G4>G1=G2=G3), and G4 also presented a higher percentage of patients with acute renal failure (G4>G1 and G4>G3, P<0.05; G1=G3 and G2=G4, P>0.05).
  
  
  CONCLUSIONS
  The evaluation of serum creatinine values and incidence of acute kidney injury postoperatively suggest a possible nefro-potective effect of nifedipine in patients undergoing myocardial revascularization with extracorporeal circulation.
authors.affiliation: Department of Surgery and Orthopedics - Faculdade de Medicina de Botucatu, UNESP - Universidade Estadual Paulista, Botucatu, SP - Brazil. andreia@fmb.unesp.br
authors.forename: Andréia Cristina
authors.initials: AC
authors.lastname: Passaroni
authors.forename: Marcos Augusto de Moraes
authors.initials: MA
authors.lastname: Silva
authors.forename: Antônio Sérgio
authors.initials: AS
authors.lastname: Martins
authors.forename: Ana Cláudia
authors.initials: AC
authors.lastname: Kochi
mesh_terms: D058186:Acute Kidney Injury / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D002121:Calcium Channel Blockers / Q000627:therapeutic use*; D002315:Cardiopulmonary Bypass / Q000009:adverse effects*; D003404:Creatinine / Q000097:blood; D005260:Female; D006801:Humans; D015994:Incidence; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization; D009543:Nifedipine / Q000627:therapeutic use*; D019990:Perioperative Care; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D011446:Prospective Studies
chemical_list: D002121:Calcium Channel Blockers; D003404:Creatinine; D009543:Nifedipine