ABG clinical problems
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| pH<7.35 and PaCO2 > 45 HCO3 Normal | RESPIRATORY ACIDOSIS
chronic obstruction lung disease
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| Chronic Obstruction lung disease | emphysema, chronic bronchitis, severed asthma, ARDS, Guillian-Barre syndrome, anesthesia and pneumonia
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| pH<7.35 and HCO3 <22 | METABOLIC ACIDOSIS
DKA, severe diarrhea, starvation/malnutrition, kidney failure, burns, shock and acute MI
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| drugs that cause a low pH | narcotics, barbiturates, acetazolamide (Diamox), ammonium chloride and paraldehyde
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| pH> 7.45 and PaCO2<35 | RESPIRATORY ALKALOSIS
salicylate toxicity (early phase), anxiety, hysteria, tetany, strenuous exercise (swimming, running) fever, hyperthyroidism, delirium tremens, pulmonary embolism, sepsis. If a mechanical vent patient (too much f or VT)
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| pH > 7.45 and HCO3 > 26 | METABOLIC ALKALOSIS
severe vomiting, gastric suction, peptic ulcer, potassium loss (hypokalemia), excess administration of sodium bicarbonate, cystic fibrosis, hepatic failure
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| drugs that cause an elevated pH | sodium bicarbonate, sodium oxalate, potassium oxalate
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| Compensated Respiratory Acidosis | pH Normal
PaCO2 > 45
HCO3> 26
Leave mechanical vent patient alone. There are no changes to be made they are compensating
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| Metabolic Alkalosis | pH alkalotic
HCO3 alkalotic
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| Metabolic Acidosis | pH is acidotic
HCO3 acidotic
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| Compensated state | pH is in normal range (7.35-7.45)
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| uncompensated | pH outside normal range and CO2 or HCO3 is normal
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| Respiratory Alkalosis | pH is alkalotic
CO2 is alkalotic
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| Respiratory Acidosis | pH is acidotic
CO2 is acidotic
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| Partially compensated | pH outside normal
CO2 and HCO3 outside of normal
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