Abg analysis
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Abg analysis

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Abg analysis Abg analysis Presentation Transcript

  • Arterial Blood Gas AnalysisVelia Marta Antonini, Parma University HospitalDepartment of Anesthesia and Intensive Care
  • 1° Gas Exchange andOxygenation evaluation Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • PaO2/PaCo2 tension = Pp activity of unbounded moleculesVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care View slide
  • PaO2 don’t forget FiO2!Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care View slide
  • PaO2 /FiO2 ratioVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • HbVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • O2 blood content + CaO2 = (Hb x SaO2 x 1.34)+PaO2 x 0.003) CvO2 = (Hb x SvO2 x 1.34)+PvO2 x 0.003) Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • O2 delivery + DO2 = CI x CaO2 CI = Cardiac Index = CO/BSA Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • O2 uptake frommicrocirculation + VO2 = CO * (CaO2 - CvO2) VO2 = CO x 1.34 x 10 x Hb x(SaO2 - SvO2) Fick principle Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • O2 extraction ratio O2ER = VO2/DO2 x 100 +VO2 = DO2 x O2ER ! O2ER normal value 20-30% Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • if Hb/SaO2 = constant Sv/SvcO2... Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • if Hb/SaO2 = constant Sv/SvcO2... Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • PaCo2Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • 2° Acid-Base Balance Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • PaCo2 pH = -log10[H+]Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • HCO3 -Be = base excessVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • balance between...PCO2[HCO3 -][H+] in mEq/L =24 x (PCO2 / [HCO3 -] ) Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • CO2 + H2O H2CO3 H2CO3 H+ + HCO3 - Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • 3° electrolytes and lactate Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • electrolytesVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • metabolism?Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • temperature...Velia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care
  • pHVelia Marta Antonini, Parma University Hospital - Department of Anesthesia and Intensive Care