title: SjO2/SvO2 correlation during pediatric cardiac surgery with cardiopulmonary bypass.
abstract: OBJECTIVE
  To compare the SjO2 (cerebral oxygenation indicator) and SvO2 (cardiac output indicator) during pediatric cardiac surgery with cardiopulmonary bypass (CPB).
  
  
  METHODS
  Retrospective study. Data of SjO2 and SvO2 measured simultaneously at critical time periods during cardiac surgery with CPB were analyzed by the Spearman correlation test and Bland- Altman plot.
  
  
  RESULTS
  Regression analysis of the pooled data showed poor correlation between SjO2 and SvO2 (r²=0.14, P=0.03) and Bland- Altman plot had a high bias (-7.9), indicating independency of the two variables. SjO2<50% (indicative of cerebral ischemia-hypoxia) were observed in 50% of the measurements after rewarming during hypothermic CPB.
  
  
  CONCLUSIONS
  SvO2 is not a good predictor of SjO2 during pediatric cardiac surgery with CPB, and low SjO2 can be undetected measuring SvO2 only.
authors.affiliation: Departamento de Biomecânica, Medicina e Reabilitação do Aparelho Locomotor, FMRP, USP, Ribeirão Preto, SP, Brasil. jgklamt@fmrp.usp.br
authors.forename: Jyrson Guilherme
authors.initials: JG
authors.lastname: Klamt
authors.forename: Pamela Regina Teixeira
authors.initials: PR
authors.lastname: Nabarro
authors.forename: Walter Villela de Andrade
authors.initials: WV
authors.lastname: Vicente
authors.forename: Luis Vicente
authors.initials: LV
authors.lastname: Garcia
authors.forename: Cesar Augusto
authors.initials: CA
authors.lastname: Ferreira
mesh_terms: D001786:Blood Glucose / Q000378:metabolism; D001921:Brain / Q000378:metabolism*; D002302:Cardiac Output / Q000502:physiology*; D002315:Cardiopulmonary Bypass / Q000379:methods*; D002560:Cerebrovascular Circulation / Q000502:physiology*; D002675:Child, Preschool; D004812:Epidemiologic Methods; D006330:Heart Defects, Congenital / Q000601:surgery; D006801:Humans; D007223:Infant; D007601:Jugular Veins / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology*
chemical_list: D001786:Blood Glucose