CLINICAL CHEM 230 EXAM II QUESTIONS &
ANSWERS
The kidneys compensate for respiratory alkalosis by (excretion OR retention) of
bicarbonate and (increased or decreased) excretion of sodium phosphate. - Answer -
Excretion, decreased
Hypoventilation can compensate for: - Answer -Metabolic alkalosis
How do healthy lungs compensate for the decrease in pH in a state of metabolic
acidosis? - Answer -Stimulating hyperventilation
How do healthy kidneys compensate for the excess hydrogen ions and concurrent low
pH observed in metabolic acidosis? - Answer -Increasing excretion of acid
What is the most probable acid/base imbalance in the patient described below?
26-year-old male presents with the following signs and symptoms:
Extreme hysteria
Hyperventilating
Pulse 110 BPM
Lab data for ABGs:
pH = 7.550
pCO2 = 27 mmHg
HCO3- =27 mEq/L
pO2 = 98 mmHg - Answer -Respiratory alkalosis
Which of the following compensatory mechanisms is correct for a patient in respiratory
acidosis? - Answer -Decrease whole blood pCO2
Respiratory alkalosis can be seen in patients with: - Answer -Hysterical hyperventilation
The specimen of choice for measuring blood pH, pO2, and pCO2 is: - Answer -
Heparinized arterial blood
Name the equation shown below.
pH = pK' + log cHCO3-/a x pCO2 - Answer -Henderson-Hasselbalch equation
Which of the following effects result from exposure of a normal arterial blood sample to
room air? - Answer -PO2 increased, PCO2 decreased, pH increased
Which of the following tests is only of the absorptivity ability of the intestine? - Answer -
D-xylose test
ANSWERS
The kidneys compensate for respiratory alkalosis by (excretion OR retention) of
bicarbonate and (increased or decreased) excretion of sodium phosphate. - Answer -
Excretion, decreased
Hypoventilation can compensate for: - Answer -Metabolic alkalosis
How do healthy lungs compensate for the decrease in pH in a state of metabolic
acidosis? - Answer -Stimulating hyperventilation
How do healthy kidneys compensate for the excess hydrogen ions and concurrent low
pH observed in metabolic acidosis? - Answer -Increasing excretion of acid
What is the most probable acid/base imbalance in the patient described below?
26-year-old male presents with the following signs and symptoms:
Extreme hysteria
Hyperventilating
Pulse 110 BPM
Lab data for ABGs:
pH = 7.550
pCO2 = 27 mmHg
HCO3- =27 mEq/L
pO2 = 98 mmHg - Answer -Respiratory alkalosis
Which of the following compensatory mechanisms is correct for a patient in respiratory
acidosis? - Answer -Decrease whole blood pCO2
Respiratory alkalosis can be seen in patients with: - Answer -Hysterical hyperventilation
The specimen of choice for measuring blood pH, pO2, and pCO2 is: - Answer -
Heparinized arterial blood
Name the equation shown below.
pH = pK' + log cHCO3-/a x pCO2 - Answer -Henderson-Hasselbalch equation
Which of the following effects result from exposure of a normal arterial blood sample to
room air? - Answer -PO2 increased, PCO2 decreased, pH increased
Which of the following tests is only of the absorptivity ability of the intestine? - Answer -
D-xylose test
