Clinical Chemistry Rotation Exam 2 Medical Laboratory Science Review (5.2)
Which PCO2 value would be seen in maximally compensated metabolic acidosis
15 mmHg
What is the maximum recommended storage time and temperature for an arterial blood gas sample drawn in a plastic syringe
30 minutes, 22C
Which condition is associated with respiratory alkalosis
Anxiety
Which of the following mechanisms is responsible for metabolic acidosis
Bicarbonate deficiency
Which of the following disorders is associated with lactate acidosis
Alcoholism
Which of the following conditions is associated with hypokalemia
Alkalosis
Which of the following will shift the O2 dissociation curve to the left
Alkalosis
Which electrolyte measurement is least affected by hemolysis
Calcium
A single point calibration is performs between each blood gas sample in order to
Correct electrode and instrument drift
Alcoholism, liver failure, and hypoxia induce acidosis by causing
Depletion of cellular NAD+
Which of the following conditions is associated with hypernatremia
Diabetes insipidus
Which of the following is classified as normochloremic acidosis
Diabetic ketoacidosis
Which of the following conditions is most likely to produce an elevated plasma potassium
Digitalis overdose
Which of the following is associated with hyponatremia
Diuretic therapy
Which condition can result in acidosis
Excessive O2 therapy
Which of the following conditions is associated with both metabolic and respiratory alkalosis
Hypokalemia
Select the anticoagulant of choice for blood gas studies
Lithium heparin
A patients blood gas results are as follows pH: 7.50 Pco2: 55 mm Hg HCO3: 40 mmol/L These results would be classified as
Metabolic alkalosis
In which condition would hypochloremia be expected
Metabolic alkalosis
In uncompensated metabolic acidosis, which of the following will be normal
PCO2
Which of the following conditions will cause an increased anion gap
Renal failure
Which condition results in metabolic acidosis with severe hypokalemia and chronic alkaline urine
Renal tubular acidosis
A patients blood gas results are as follows: pH: 7.26 dco2: 2.0 mmol/L HOC3: 20 mmol/L These results would be classified as
Respiratory acidosis
Which electrolyte level best correlates with plasma osmolality
Sodium
Which electrolytes is least likely to be elevated in renal failure
Sodium
Why are 3 levels used for QC of pH and blood gases
Systemic errors can be detected earlier than with two controls
Which of the following is the primary mechanism causing respiratory alkalosis
Hyperventilation
Which of the following is the primary mechanism of compensation for metabolic acidosis
Hyperventilation
Which of the following is the primary mechanism for vasopressin (ADH) release
Hyperosmolar plasma
