ABG.pptx

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1. ABG Interpretation. Ahmad Thanin

2. Introduction Interpreting an arterial blood gas (ABG) is a crucial skill for physicians, nurses, respiratory therapists, and other healthcare personnel. ABG interpretation is especially important in critically ill patients.

3. 6 STEPS TO INTERPRET ABG RESULT:

4. normal values for arterial blood gases

5. STEP 1: ANALYZE THE PAO2 AND THE SAO2

6. PAO2:

7. SAO2: Normal range (96% - 100%)

8. P/F RATIO:

9. O2 CONTENT :

10. SCENARIO:

11. Answer CO Poisoning

12. CO Poisoning

13. CARBOXYHEMOGLOBIN TEST:

14. STEP 2: ANALYZE THE pH: This is usually the primary disorder Remember: an acidosis or alkalosis may be present even if the pH is in the normal range (7.35 – 7.45)

15. STEP 3: ANALYZE THE CO2

16. STEP 3: ANALYZE THE HCO3:

17. STEP 5+6: MATCH THE CO2 OR THE HCO3 WITH THE pH.

18. pH Acidosis Alkalosis PaCo2 Respiratory Metabolic Anion Gap Acute Chronic Inversely Proportionally

19. IF IT’S RESPIRATORY: ACUTE OR CHRONIC?

20. COMPENSATED OR NOT:

21. PARTIALLY COMPENSATED: With partially compensated ABGs, the body has begun to correct the acid-base problem via either the lungs or the kidneys. The pH has not returned to the normal range.

22. CASE 1A :

23. CASE 1B :

24. CASE 1C :

25. CASE 2 A :

26. CASE 2B :

27. CASE 1C :

28. IF IT’S METABOLIC: ANION GAP

29. CAUSES OF HIGH-ANION-GAP METABOLIC ACIDOSIS Elevated anion gap represents metabolic acidosis

30. REFERENCES: