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Anonymous
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43557
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2
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2010-10-19 21:41:32
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  1. pressure x16 to maintain flow if airway is reduced by half is what type of law
    Poiseulle's law
  2. 4 types of factors affecting airway resistance and lung compliance
    • airway - swellling, tumors, obstruction
    • tube - too small, too long, secretions, blood
    • circuit - water, kinks
    • lungs - copd, bronchitis
  3. formula of RAW
    raw = change in pressure/flow
  4. change in pressure equation is
    pip - ppl
  5. equation for static compliance
    corrected vt / (ppl - peep)
  6. equation for dynamic compliance
    corrected vt / (peak - peep)
  7. equation for corrected vt
    expired vt - tubing vol
  8. equation for tubing vol
    change in pressure x .3 ml/cmh20
  9. what type of compliance measures elastic resistance of chest wall and lungs
    static compliance
  10. what type of compliance is measured with NO airflow
    static compliance
  11. what type of compliance measures elastic resistance of airway, lung, and chest wall
    dynamic compliance
  12. what type of compliance is measure with airflow
    dynamic compliance
  13. what 3 types of conditions shows a low static compliance
    • ards
    • atelectasis
    • tension pneumothorax
  14. what 3 types of conditions shows a low dynamic compliance
    • bronchospasms
    • kink of ETT
    • airway obstruction
  15. resistance is seen in what type of loop
    p-v loop
  16. an increased bowing of the loop equals a increased or decreased resistance
    increased resistance
  17. lungs stiff/restrictive is a low or high compliance
    low compliance
  18. a downward shift in p-v loop will show a what type of compliance? high or low?
    low compliance
  19. lack of recoil/obstructive is a low or high compliance
    high compliance
  20. upward shift in p-v loop will show a what type of compliance? high or low?
    high compliance
  21. normal ranges for static compliance
    40-60 ml/cmh20
  22. normal ranges for dynamic compliance
    30-40 ml/cmh20
  23. 3 types of factors influencing deadspace
    • anatomic - upper airways
    • alveolar - lack of blood flow to alveoli
    • physiologic - sum of anatomic and alveolar deadspace
  24. equation for deadspace (Vd/Vt)
    pac02 - pec02/pac02
  25. amount of ventilation in relation to the amount of pulmonary blood flow is called
    v/q mismatch
  26. a decrease in alveolar ventilation is called
    hypoventilation
  27. amount of vt that is used in gas exchange is called
    alveolar volume (Va)
  28. equation for Va
    vt - vd

    inadequate blood flow
  29. normal shunt is
    less than 10 %
  30. blood in excess of 02 is called
    intrapulmonary shunting
  31. 3 primary indications for CPAP
    • osa - obstructive sleep apnea
    • chf - congestive heart failure
    • improve oxygenation
  32. 2 primary indications for BIPAP
    • ventilation
    • improve oxygenation
  33. 3 types of patients that are poor candidates for NPPV
    • unable to wear a mask
    • claustrophobic
    • need immediate intubation
  34. 3 types of delivery devices for NPPV
    • face mask
    • nasal mask
    • nasal pillows
  35. 4 types of complications with masks
    • claustrophobia
    • leaking
    • breakdown
    • vomiting
  36. initial settings for CPAP
    +5
  37. if patient is snoring on CPAP, what should you do to the setting
    increase CPAP
  38. initial settings for BIPAP
    10/5
  39. if pt has a increase co2, what would should you do to the BIPAP setting
    increase IPAP
  40. in BIPAP mode, IPAP is mainly used to adjust what?
    ventilation
  41. in BIPAP mode, EPAP is mainly used to adjust what?
    oxygenation

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