Clinical Chemistry: Electrolytes

Card Set Information

Author:
jcaliso
ID:
109031
Filename:
Clinical Chemistry: Electrolytes
Updated:
2011-10-15 04:45:15
Tags:
Clinical Chemistry Electrolytes
Folders:

Description:
Clinical Chemistry: Electrolytes
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user jcaliso on FreezingBlue Flashcards. What would you like to do?


  1. A plasma specimen from a hospital patient is analyzed on an osmometer and reported as 400 mOsm/Kg. What is the most likely effect on this patient's water distribution in the tissues?
    dehydration
  2. True or False?
    Choloride is the major extracellular anion in plasma.
    True
  3. True or False?
    The main function of antidiuretic hormone is to increase the reabsorption of sodium and increase the secretion of potassium.
    False
  4. The sweat test for chloride is used as a screening test for:
    Cystic fibrosis
  5. Which of the following electrolytes would be increased in the serum if the blood specimen was hemolyzed?
    Potassium and phosphate
  6. When a mole of NaCl is added to a kilogram of water, which of the following changes occurs in its colligative properties?
    The osmotic pressure is increased and the freezing point is decreased
  7. A patient brought to the emergency room has the following laboratory results:
    Sodium= 140 mmol/L glucose= 80 mg/dL BUN= 6.0 mg/dL Osmolity= 316 mOsm/Kg H20
    The calculated osmolity on this patient using the Weisburg formula is:
    286
  8. A patient brought to the emergency room has the following laboratory results:
    Sodium= 140 mmol/L glucose= 80 mg/dL BUN= 6.0 mg/dL Osmolity= 316 mOsm/Kg H20
    True or False?
    The "Osmolal gap" suggests that this patient could be suffering from ethanol intoxication or ingestion of some other volatile substance:
    True
  9. You just received a blood specimen from the emergency room. According to the requisition, the patient had overdosed on an antacid medication containing bromide salts. You have been asked to run a STAT set of electrolytes on the serum. Which electrolyte would most likely be falsely elevated?
    Chloride
  10. True or False?
    Blood is drawn into a Vacutainer tube and allowed to clot. If the serum is not seperated from the cells, the serum potasssium will tend to decrease and the serum sodium will tend to increase.
    False
  11. One cause for a DECREASED "anion gap" is:
    A decrease in albumin
  12. The membrane substance used in the potassium ion-selective electrode is:
    Valinomycin
  13. An electrolyte panel was performed on a patient in the emergency room. The following values were reported:
    Sodium: 150 meq/L Potassium: 5 meq/L Chloride: 110 meg/L Bicarbonate: 30 meq/L
    The anion gap (without using K) for this patient is:
    10
  14. Hypernatremia commonly occurs in:
    Burns and excessive sweating without water intake
  15. Hyperkalemia may be seen in all the following EXCEPT:
    Diuretic therapy only
  16. One notable exception where hypochloremia does not mimic hyponatremia is:
    Vomiting
  17. A low plasma osmolity and low sodium would be expected in a patient with:
    SIADH
  18. What is the purpose of the hydroxyquinoline in the cresolpthalen determination for calcium?
    Reduce Mg interference
  19. The combination of non-fasting and hemolyzed serum from a patient for phosphorus determination could possibly cause results to be:
    Normal
  20. Which of the following enzyme tests is most affected by "hemolysis"?
    Lactate dehydrogenase
  21. One International Unit is defined as one __________ of substrate converted to product per ____________.
    Micromole; minute
  22. Which of the following is NOT considered a coenzyme?
    Magnesium
  23. Which of the following enzymes requires chloride (Cl) as an activator?
    Amylase
  24. The enzyme that is inhibited by hemoglobin is:
    Lipase
  25. Prostatic acid phosphatase measurement has been replaced by:
    PSA
  26. Of the following, the only clinically analyzed enzyme in the urine is:
    Amylase
  27. In the Szasz method for gamma glutamyl transferase (GGT), the typical receptor molecule is:
    Glycyl glycine
  28. A reaction rate assay measures enzyme __________; an endpoint assay measures enzyme _____________.
    Activity; activity
  29. The method of choice for measurement of serum ionized calcium is:
    Ionselective electrode

What would you like to do?

Home > Flashcards > Print Preview