Neonates Chapter 9

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  1. What is not an indication for obtaining a blood gas sample?
    Significant blood loss
  2. Which of the following are common sites used to obtain arterial blood in neonates?
    1. Umbilical artery
    2. Radial artery
    3. Femoral artery
    4. Capillary
    5. Carotid artery
    • Umbilical artery
    • Radial artery
    • Carotid artery
  3. In the presence of right-to-left shunting of blood through the ductus arteriosus, arterial blood from the UAC would show:
    A low arterial PO2
  4. The complication of necrotizing enterocolitis is most prevalent in which of the following blood gas access sites?
    Umbilical artery
  5. Reliable values obtained from caplillary samples require which of the following?
    Consistency in the technique
  6. What best describes PaO2?
    The pressure of oxygen dissolved in plasma
  7. What defines alveolar ventilations?
    Minute ventilation minus deadspace ventilation
  8. As respiratory rate increases at a static tidal volume, which of the following occurs?
    1. PaCO2 decreases
    2. PaCO2 increases
    3. Alveolar ventilation increases
    4. Alveolar ventilation decreases
    • PaCO2 decreases
    • Alveolar ventilation increases
  9. At a pH of 7.40, which of the following represents the correct balance of bicarbonate to dissolved carbon dioxide?
  10. In the presence of respiratory acidosis, which of the following is the amount of bicarbonate the body retains for each 1 mm Hg increase in PaCO2?
    0.1 mEq/L
  11. Carbonic acid is formed by a combination of:
    HCO3 and H+ ions
  12. NaHCO3, if given too rapidly, could lead to:
    Diminished PaO2
  13. The purpose of heating the skin the attachment site of the TCM is to:
    Increase the perfusion to the area
  14. Which of the following factors would cause PtCO2 to measure lower than actual arterial PO2?
    1. Shock
    2. Severe acidosis
    3. Skin edema
    4. Hyperthermia
    5. Severe anemia
    • Shock
    • Severe acidosis
    • Skin edema
    • Severe anemia
  15. The greatest hazard associated with transcutaneous monitors is:
    Thhermal injury
  16. What would cause erroneous pulse oximetry readings?
    Presence of carboxyhemoglobin
  17. A major disadvantage of a mainstream end-tidal CO2 monitor is:
    Accidental extubation
  18. The greatest effect on the end-tidal CO2 monitor is exerted by:
    Deadspace ventilation
  19. An increasing PetCO2 may incicate which of the following?
    1. Worsening oxygenation
    2. Worsening V/Q ratio
    3. Improving V/Q ratio
    4. Improvement in alveolar deadspace disease
    5. Increasing alveolar deadspace
    • Worsening V/Q ratio
    • Improvement in alveolar deadspace disease

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Neonates Chapter 9
2012-03-06 00:14:22

Assessment of oxygenation and ventilation
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