Arterial Blood Gas analysis
Terms
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PaC02
Normal value?
Range? -
PaCO2
Normal value=40mmHg
Range=35-45mmHg -
HCO3
Normal value?
Range? -
HCO3
Normal=24mEq/L
Range= 22-26mEq/L -
SaO2
Normal Range? -
SaO2
Normal range=93-100% -
PaO2
Normal?
Range? -
PaO2
Normal=90mmHg
Range=80-100mmHg -
pH
Normal?
Range? -
pH
Normal=7.4
Range=7.35-7.45 - Lab value showing METABOLIC acidosis:
- HCO3 less than 22 mEq/L
- Lab value showing METABOLIC alkalosis:
- HCO3 greater than 26 mEq/L
- Lab value showing RESPIRATORY acidosis:
- PaCO2 greater than 45 mmHg
- Lab value showing RESPIRATORY alkalosis:
- PaCO2 less than 35 mmHg
- Alkalosis
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pH above 7.45
(7.4 is normal) - Acidosis:
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pH below 7.35
(7.4 is normal) - Clinical manifestations of METABOLIC ACIDOSIS:
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1) hyperkalemia
2)anorexia, nausea, and vomiting
3) warm, flushed skin
4) cardiac dysrhythmias and CNS dysfunction
5) headache, diarrhea, tremors - Clinical manifestations of METABOLIC ALKALOSIS:
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1) cardiac dysrhythmias; seizures; confusion; muscle twitching, agitation
2) elevated pH; elevated HCO3; normal PaCO2 or elevated if compensation occurs. - Clinical manifestations of RESPIRATORY ACIDOSIS:
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1)lowered pH; elevated PaCO2; HCO3 is normal or elevated (with renal compensation)
2) vasodilation; cardiac dysrhythmias, tachycardia, somnolence, decreased ventilation - Clinical manifestations of RESPIRATORY ALKALOSIS:
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1) elevated pH; lowered PaCO2; HCO3 normal or low due to compensation
2) nausea, vomiting, tingling of fingers