Clinical Chemistry: Blood gases, pH and Buffer Systems

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  1. True or False?
    Base excess is a blood gas parameter that measures the deviation from the normal buffer base and can be either positive or negative.
  2. True or False?
    an increased p50 causes a shift of the oxygen dissociation curve to the left.
  3. Upon receiving an arterial specimen for blood gases in the lab, you observe that it was not maintained under strict anaerobic conditions. You refuse to analyze the specimen. You base your decision on the premise that the following parameters have been altered:
    pH increased, pCO decreased, pO2 increased
  4. You have determined the following blood gas parameters on a patient with emphysema. Calculate the total carbon dioxide content in mEq/L
    pH= 7.20 HCO3= 20 mEg/L pO2=60mmHg pCO2= 100 mmHg BE= +4
  5. True or False?
    Arterialized blood is always an acceptable alternative to arterial blood providing you warm up the puncture site before obtaining the specimen.
  6. The solubility coefficient of carbon dioxide in plasma is:
  7. Which of the following forms of the Henderson Hasselbalch equation is (are) correct?
    pH= 6.1 + log HCO3/ H2CO3 and pH=pKa + log HCO3/H2CO3
  8. What is true about partially compensated respiratory alkalosis are true:
    Hypoventilation is the causative defect
  9. A shift of the oxygen dissociation curve to the right, resulting in a decreased affinity of hemoglobin oxygen, may be due to:
    Low blood pH level
  10. A patient is admitted to the ER in a state of metabolic alkalosis. Which of the following would most likely be consistent with this diagnosis?
    high pCO2, increased HCO3
  11. Metabolic acidosis is described as a (n)
    Deceased in HCO3 and pCO2 with a decreased pH
  12. A common cause of respiratory alkalosis is:
  13. In an enzyme activity assay, the concentration of a coenzyme:
    Should be in excess of its requirement

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Clinical Chemistry: Blood gases, pH and Buffer Systems
2011-10-15 09:12:42
Clinical Chemistry Blood Gases pH Buffer Systems

Clinical Chemistry: Blood gases, pH and Buffer Systems
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