18 Questions
What would be the expected condition with hypochloremia?
Metabolic alkalosis
What is the primary mechanism causing respiratory alkalosis?
Hyperventilation
What would cause an increased anion gap?
Renal failure
What is a condition resulting in acidosis?
Cystic fibrosis
What is associated with an increase in ionized calcium (Cai) in the blood?
Alkalosis
What laboratory result is consistent with primary hypoparathyroidism?
Low calcium; high inorganic phosphorus Pi
What is the anticoagulant of choice for blood gas studies?
Lithium heparin 100 U/mL blood
A patient's blood gas results are pH = 7.26, dCO2 = 2.0 mmol/L, HCO3– = 29 mmol/L. What would be the classification of these results?
Metabolic acidosis
A patient's blood gas results are pH = 7.50, PCO2 = 55 mm Hg, HCO3– = 40 mmol/L. What do these results indicate?
Metabolic alkalosis
Which set of results is consistent with uncompensated respiratory alkalosis?
pH 7.66, HCO3 22 mmol/L, PCO2 20 mm Hg
What would shift the O2 dissociation curve to the left?
Alkalosis
In which circumstance would the reporting of calculated oxygen saturation of hemoglobin be in error?
Carbon monoxide poisoning
What is a characteristic of pseudohyponatremia?
It occurs when undiluted samples are measured
Which of the following is true about potassium levels in heparinized plasma versus serum?
Potassium levels are slightly higher in heparinized plasma
What is the effect of hypoalbuminemia on total calcium levels?
It decreases total calcium levels
Which of the following laboratory results is associated with cystic fibrosis?
Sweat chloride greater than 60 mmol/L
Which of the following statements is true about enzyme activity?
Apoenzyme + prosthetic group = holoenzyme
What is the most common analytical error in sweat chloride collection?
Leaving the preweighed gauze on the inside of the arm exposed to air during collection
This quiz tests your knowledge on electrolytes and acid-base balance in the human body, including hypochloremia, anion gap, and the effects of certain conditions on electrolyte levels.
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