Respiratory puzzle

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Across
  1. 3. cyclic opening and closing
  2. 6. air breathed per minute
  3. 7. a control variable
  4. 10. marker of lung stress
  5. 13. initiation of inspiration
  6. 14. augments spontaneous tidal volume
  7. 15. variable used to initiate expiration
Down
  1. 1. high peak inspiratory pressure
  2. 2. may cause increased peak inspiratory pressure
  3. 4. caused by poor elastic recoil
  4. 5. may cause MODS
  5. 8. when gas flow ceases
  6. 9. increases airway pressure
  7. 11. rationale for lung protective ventilation
  8. 12. reduced airway diameter will increase this