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N4117
Exam II Rules for ABG & Interpretation
| Question | Answer |
|---|---|
| C02 is always what? | Acidotic |
| HC03 is always what? | Alkalotic |
| In the resp. parameters, what ONLY can manipulate C02? | Lungs |
| In the metabolic parameters, what ONLY can manipulate HC03? | Kidneys |
| What are the 2 ways to become acidotic? | Gain acid or lose base |
| What are the 2 ways to become alkalotic? | Gain base or lose acid |
| Normal values for pH (H+ ion concentration)? | 7.35 - 7.45 |
| Normal values for PC02 (Resp.component)? | 35 - 45 |
| Normal values for HC03 (metabolic component)? | 22 - 26 |
| Normal values for Pa02 | 80 - 100 |
| Normal value for Base Excess? | ±2 |
| Base Excess < 2 is what? | Metabolic acidosis |
| Base Excess >2 is what? | Metabolic alkalosis |
| What is Base Excess & Base Deficit | Reflects non-respiratory contribution to acid-base balance |
| What is step 1 in ABG interpretation? | Does the PaO2 level indicate hypoxemia? |
| What is step 2 in ABG interpretation? | Is the pH level on the acid or alkaline side of 7.40? |
| What is step 3 in ABG interpretation? | Does the PaCO2 level indicate respiratory acidosis, alkalosis or normalcy? |
| What is step 4 in ABG interpretation? | Does the HCO3 level indicate metabolic acidosis, alkalosis or normalcy? |
| What is step 5 in ABG interpretation? | Does the pH show a compensated or uncompensated condition? |
| Rule for uncompmsated pH? | An abnormal pH + one abnormal value (either PCO2 or HCO3) |
| Interprete this: pH 7.25, Pc02 50, HC03 24. | Respiratory acidosis uncompensated |
| Interprete this: pH 7.51, PC02 30, HC03 26. | Respiratory alkalosis uncompensated |
| Rule for Partial pH compensation? Tips All values abnormal. | An Abnormal pH + 2 abnormal values (PCO2 and HCO3) |
| Interprete this: pH 7.31, PC02 32, HC03 18. | Metabolic acidosis with partial compensation |
| Interprete this: pH 7.58, PC02 32, HC03 20 | Respiratory alkalosis with partial compensation |
| Rule for Full pH compnsation? | A Normal pH + 1 or 2 abnormal values (pCO2 and/or HCO3) |
| Interprete this: pH 7.38, PC02 49, HC03 32. | Resp. acidosis with full compensation |
| Interprete this: pH 7.43, PC02 32, HC03 21. | Resp. alkalosis w/ full compensation |
| What are tne panic values of pH? | <7.2 and >7.6 |
| Panic values for PaC02 is? | <20 and >70 |
| Panic level of HC03 is? | <10 and >40 |
| Pa02 value <80mmHg is indicative of? | Hypoxemia. |
| Interprete this: pH 7.44, PaCO2 28, HCO3 24, PaO2 54. | Compensated Respiratory Alkalosis with hypoxemia |
| pH= 7.48, PaCO2= 28, HCO3= 22, PaO2= 85, | Respiratory Alkalosis: Uncompensated |
| pH= 7.33, PaCO2= 25, HCO3= 12, PaO2= 89. | Metabolic Acidosis with Partial compensation |
| pH= 7.49, PaCO2= 40, HCO3= 32, PaO2= 100. | Metabolic alkalosis: uncompensated |
| pH= 7.31, PaCO2= 53, HCO3= 29, PaO2= 95. | Respiratory Acidosis: partial compensation |
| pH= 7.32, PaCO2=44, HCO3=18, PaO2=85. | Metabolic Acidosis: Uncompensated |
| pH= 7.54, PaCO2= 25, HCO3= 20, PaO2= 80. | Respiratory Alkalosis with Partial compensation |
| pH= 7.29, PaCO2= 51, HCO3= 24, PaO2= 90 | Respiratory acidosis: uncompensated |
| pH= 7.42, PaCO2= 55, HCO3= 33, PaO2= 90 | Metabolic Alkalosis with complete compensation |
Created by:
nze
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