TUTORIAL 2 : TOPIC 2HYDROGEN ION

HOMEOSTASIS

CHM60304 CLINICAL CHEMISTRY

STEPS TO ABG INTERPRETATION

EXAMPLE - CASE 1

• ABG Results:pH : 7.30 (7.35 - 7.45)pCO2: 55 (35 - 45)

HCO3: 26 (22 – 26)

• Interpretation:pH : 7.30 (Acid)pCO2: 55 (Acid) = Lungs

HCO3: 26 (Normal) = Kidneys

• Interpretation:Respiratory acidosis

STEPS TO ABG INTERPRETATION IN COMPENSATION

EXAMPLE - CASE 2

• ABG Results:pH : 7.38 (7.35 - 7.45)pCO2: 56 (35 - 45)

HCO3: 35 (22 – 26)

• Interpretation:pH : 7.38 (NORMAL)pCO2: 55 (Acid) = Lungs

HCO3: 35 (Alk) = Kidneys

• Use pH 7.40 7.38 = Acid

• Interpretation:

Respiratory acidosis - compensated

NOW, ATTEMPT THE ABG CASES IN TIMES TUTORIAL 2 QUIZ…