Blood gasses

How are arterial blood gas specimen parameters affected when the specimen is not maintained under strict anaerobic conditions?

• pH increases, pCO 2 decreases, pO 2 increases

• pH decreases, pCO 2 increases, pO 2 decreases

• pH increases, pCO 2 increases, pO 2 decreases

• pH decreases, pCO 2 decreases, pO 2 increases

Given the following, what is the total carbon dioxide content in mEq/L? pH 7.20 HCO3 20 mEq/L pO2 60 mmHg pCO2 100 mmHg BE +4

• 20

• 23

• 24

• 40

Which of the following represents the Henderson-Hasselbalch equation?

• pH = 6.1 + log H2CO3-/HCO3-

• pH = pKa + log HCO3-/H2CO3

• pH = 6.1 – log H2CO3/HCO3-

• pH = pKa – log HCO3-/H2CO3

Which of the following results in a shift of the oxygen dissociation curve to the right, resulting

• Low temperature

• Low pCO 2 level

• Low blood pH level

• Low concentration of 2,3-DPG

Which of the following findings is consistent with a diagnosis of metabolic alkalosis?

• High pCO 2 , increased HCO 3

• Low pCO 2 , increased HCO 3

• High pCO 2 , decreased HCO 3

• Low pCO 2 , decreased HCO 3

Which of the following is consistent with metabolic acidosis?

• Increase in pCO 2 with a decreased pH

• Decrease in HCO 3 with an increased pH

• Increase in HCO 3 with an increased pH

• Decrease in HCO 3 with a decreased pH

Which of the following is a common cause of metabolic alkalosis?

• Vomiting

• Starvation

• Asthma

• Hyperventilation

The following laboratory results are consistent with what acid-base disorder? Sodium 136 mmol/L Potassium 4.4 mmol/L Chloride 95 mmol/L Carbon dioxide 40 mmol/L

• Respiratory alkalosis

• Respiratory acidosis

• Metabolic alkalosis

• Metabolic acidosis