ABG Brad Quiz.txt

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ABG Brad Quiz.txt
2012-01-21 05:02:06
ABG Brad

ABG Brad's quiz
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  1. What do you need to perform before doing a percutaneous punture of the radial artery or dorsalid pidas artery?
    Allen's Test
  2. What size needle is used for adults?
    23-25 gauge
  3. What size needle is used for infants?
    25-26 guage
  4. Where is the artery sample obtained in the infant?
  5. What should be used to prep the puncture sight?
    70% isopropanol
  6. What should be in the syringe prior to puntuce of the artery and abtaining the sample?
    Sodium or Heparin
  7. To alleviate possible pain and pt. anxiety, what can be used as a local anethetic?
    1% Lidocaine
  8. Why is the blood drawn anaerobically?
    to prevent contamination by room air
  9. If you are going to take a capillary blood gas sample from an infants' heel or earlobe, what should you do first?
    Warm the area to increase perfusion
  10. In an adult, when drawing blood from an A-Line, how much should be removed and discarded before drawing the sample?
  11. How quickly should un-iced specimens be analyzed?
    within 5 minutes
  12. What are the erroneous results you might get from not analyzing the sample in time?
    reduction in PaO2 and rise in PaCO2
  13. After drawing the sample from the A-Line, why do you flush the line?
    To prevent coagulation
  14. Why does the erroneous results happen?
    Blood cells remain metabolically active in vitro
  15. What type of pt's would particularly have a problem with erroneous results?
    High White Blood Cell Count
  16. What represents unuversal neutrality?
    pH 7.00
  17. How cold should the blood sample be chilled?
    Below 5 degrees C
  18. Blood can contain how many types of hemoglobin?
  19. What three electrodes does a typical blood gas monitor have?
    pH, PaCO2, PaO2
  20. Most commercially available co-oximeters provide measurements for how many types of hemoglobin?
  21. pH is a shorthand way of expressing the hydrogen ion activity of solutions? T or F
  22. What types of hemoglobin do co-oximeters typically measure?
    O2Hb, HHb, HbCO, and metHb
  23. O2Hb and HHb are measured with a pulse oximeter, using red light at 660nm and IR light at 940nm. Which absorbs more light?
  24. O2Hb and HbCO have similar absorbtion coefficients for red light or IR light?
    Red light
  25. Significant levels of HbCO will lead to?
    Overestimation of SpO2
  26. metHb absorbs?
    Both IR and red light
  27. Do pulse-oximeters report fractional or functional hemoglobin saturation?
  28. What is the best way to deal with inaccurate readings due to low perfusion when using a pulse-ox?
    reposition to an area of higher perfusion
  29. If enough metHb is present to dominate all pulsatile absorption, the pulse-ox will measure a red-IR ratio of 1:1, corresponding to an SpO2 of?
  30. Regarding non-COPD patients, a PaCO2 greater than ________ would equate to ventilatory failure.
  31. Moderate hypoxemia
  32. Regarding COPD patients, acute ventilatory failure is said to exist if the PaCO2 is well above 50 mmHg and the pH is below?
  33. The preceding hypoxemia levels were based on a pt. under 60 years of age. For mild and moderate hypoxemia in pt;s over 60, for each year of age over 60 you would?
    Subtract 1 mmHg to the limits
  34. Mild hypoxemia?
  35. A PaO2 of 40 mmHg indicates severe hypoxemia in any pt. at any age: T or F?
  36. The most common iatrogenic blood gas abnormality in the hospital is?
    Metabolic Alkalosis
  37. Severe hypoxemia?
    <40 mmHg
  38. What are some causes of metabolic acidosis?
    Diarrhea, Methanol ingestion, and Diabetes mellitus
  39. What are some causes of respiratory acidosis?
    Neuromuscular disorders, Pneumothorax, Restrictive pulmonary disease
  40. What are some causes of metabolic alkalosis?
    Diuretic therapy, Vomiting, Nasogastric suctioning
  41. What are some causes of respiratory alkalosis?
    Anxiety, Encephalitis, Progesterone