Ventilation Part 1.txt

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Ventilation Part 1.txt
2011-12-06 18:09:56
RESP 130

RESP 130
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  1. The process of moving air in and out of the lungs
  2. What is the main function of the lungs?
    to supply O2 to the body and remove CO2.
  3. Inadequate ventilation or increased work of breathing can result from?
    Disease or unhealthy lung
  4. Normal ventilation is a cyclical activity of ?
    inspiration and expirattion phases.
  5. During normal ventilation the ______ removes CO2 and supplies O2 to meet the metabolic needs.
    Tidal Vomlume (Vt)
  6. The reserve to meet increased ventilatory demands, such as from exercise comes from?
    insiratory reserve volume and expiratory reserve volume.
  7. IRV
    inspiratory reserve volume
  8. ERV
    expiratory reserve volume
  9. Comprise the vital capacity
    IRV and ERV
  10. VC
    vital capacity
  11. Ventilation can be related to the following equation of motion for the Resp. Sys.
    Pressure= (Volume/Compliance)+(resistance x Flow)
  12. = Force generated by the respiratory muscles during inspiration
  13. = Volume change (VT)
  14. = Distensibility of the lungs and thorax
  15. = Airflow and tissure resistance
  16. = Volume change per unit of time
  17. Compliance and resistance of the lungs and thorax make up the work load of?
  18. In healthy lungs, this work is performed during?
  19. is passive
  20. Ventilation occurs because of pressure gradients created by?
    expansion and contraction of the thorax
  21. Pressures are usually measure in?
    cm H2O
  22. 1 atm in cm H2O
    1034 cmH2O
  23. 1 atm in mmHg
  24. A possitive pressure is?
    greater than atm.
  25. negative pressure is?
    less than 1atm
  26. difference between two pressures is called?
    pressure gradient
  27. Important pressure gradients
    Transrespiratory, transpulmonary, and transthoracic
  28. this gradient pressure causes gas flow in and out of the lungs
    transrepiratory pressure
  29. Prs
    Transrepiratory pressure
  30. Formula of Prs
  31. Palv
    Alveolar pressure
  32. Pao
    mouth pressure
  33. Pbs
    barometric pressure
  34. Is the difference between alveoli pressure and pleural pressure
    Transpulmonary pressure
  35. (Ptp or PL
  36. Palv
    Alveoli pressure
  37. Ppl
    Pleural Pressure
  38. Equation for transpulmonary pressure
  39. PL keeps what open
  40. Difference between pleural pressure and body surface pressure. Represents total pressure required to expand or contract the lungs and chest wall together
    Transthoracic pressure
  41. Pw the pressure across the chest wall
    Transthoracic pressure
  42. Ppl
    Pleural pressure
  43. Pbs
    Body surface pressure
  44. Formula for transthoracic pressure
  45. Distention of the lungs are needed for?
  46. These are the forces opposing lung inflation.
    Elastic and frictional forces
  47. oppsing forces that involve the tissues of lungs and thorax, and surface tension in the alveoli
    elastic forces
  48. resistance caused by gas flow and tissue movement during breathing. An opposing force on inflation of the lungs
    Frictional forces
  49. What are the four lung volumes
    Tidal volume, Inspiratory reserve volume, expiratory reserve volume, residual volume
  50. Four lung capacities
    Inspiratory capacity, vital capacity, functional residual capacity, total lung capacity.
  51. the volume of gas that is inhaled or exhaled from the lungs during quiet breathing. ~500mls
    Tidal Volume
  52. The maximum volume of gas that can be inhaled following a normal quiet breathing
    Inspiratory reserve volume ~ 3100mls
  53. the amount of gas that can be exhaled from the lungs following normal quiet exhalation ~1200mls
    Expiratory reserve volume
  54. The volume of gas remaining in the lungs after a complete exhalation ~1200mls
    Residual volume
  55. The maximum amount of gas that can be inhaled following a normal quiet exhalation. Sum of tidal volume and inspiratory reserve volume. ~3600mls
    inspiratory capacity
  56. the maximum amount of gas that can be exhaled following a maximum inhalation of gas. Sum of inspiratory reserve volume, tidal volume, and the expiratory reserve volume. ~4800mls
    vital capacity
  57. the amount of gas left in the lungs following a normal quiet exhalation. Sum of residual volume and expiratory volume. ~2400mls
    Functional residual capacity
  58. the maximum volume of gas in the lungs at the end of a maximum inhalation. sum of the vital capacity and the residual volume
    total lung capacity