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A method and apparatus for operating a ventilator in a primary electronic mode or in a back-up pneumatic mode during primary electronic mode failure. A method and apparatus for operating a ventilator in an advanced mode, having a number of ventilatory modes, or in a basic mode, having a limited numb

A method and apparatus for operating a ventilator in a primary electronic mode or in a back-up pneumatic mode during primary electronic mode failure. A method and apparatus for operating a ventilator in an advanced mode, having a number of ventilatory modes, or in a basic mode, having a limited number of ventilatory modes is also disclosed.

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1. A method of operating a ventilator, comprising the steps of:providing a ventilator having a control device, the control device including means for inputting a body length of a patient to be ventilated;inputting, into the control device, the body length of a patient to be ventilated;calculating, i

1. A method of operating a ventilator, comprising the steps of:providing a ventilator having a control device, the control device including means for inputting a body length of a patient to be ventilated;inputting, into the control device, the body length of a patient to be ventilated;calculating, in the control device, at least one ventilation parameter based solely upon said body length; andproviding ventilation in accordance with the calculated at least one ventilation parameter, wherein said ventilation parameter is selected from the group consisting of: tidal volume; respiratory rate; inspiratory flow rate; I:E ratio; inspiratory time; and minute ventilation.2. The method of claim 1, wherein said ventilation parameter is tidal volume.3. The method of claim 1, wherein said ventilation parameter is respiratory rate.4. The method of claim 1, wherein said ventilation parameter is inspiratory flow rate.5. The method of claim 1, wherein said ventilation parameter is I:E ratio.6. The method of claim 1, wherein said ventilation parameter is inspiratory time.7. The method of claim 1, wherein said ventilation parameter is minute ventilation.8. The method of claim 1, wherein a plurality of ventilation parameters are calculated based upon the input body length of the patient.9. The method of claim 8, wherein said ventilation parameters include tidal volume and respiratory rate.10. The method of claim 8, wherein said ventilation parameters include tidal volume and inspiratory flow rate.11. The method of claim 8, wherein said ventilation parameters include respiratory rate and inspiratory flow rate.12. A method of operating a ventilator, comprising the steps of:providing a ventilator having a control device, the control device including means for inputting a body length of a patient to be ventilated;inputting, into the control device, the body length of a patient to be ventilated;calculating, in the control device, at least one ventilatory limit, based solely upon said body length; andlimiting at least one ventilation parameter in accordance with the calculated at least one ventilatory limit,wherein said ventilatory limit is selected from the group consisting of: PSV pressure: PCV pressure; peak inspiratory pressure; respiratory rate; tidal volume; I:E ratio; and inspiratory time.13. The method of claim 12, wherein said ventilatory limit is PSV pressure.14. The method of claim 12, wherein said ventilatory limit is PCV pressure.15. The method of claim 12, wherein said ventilatory limit is peak inspiratory pressure.16. The method of claim 12, wherein said ventilatory limit is respiratory rate.17. The method of claim 12, wherein said ventilatory limit is tidal volume.18. The method of claim 12, wherein said ventilatory limit is I:E ratio.19. The method of claim 12, wherein said ventilatory limit is inspiratory time.20. The method of claim 12, further comprising the steps of:calculating, in the control device, at least one ventilation parameter, wherein said calculating step consists essentially of calculating the at least one ventilation parameter based upon the input body length of the patient; andproviding ventilation in accordance with the calculated at least one ventilation parameter.21. The method of claim 20, wherein said ventilatory limit is PSV pressure.22. The method of claim 20, wherein said ventilatory limit is PCV pressure.23. The method of claim 20, wherein said ventilation parameter is tidal volume.24. The method of claim 20, wherein said ventilation parameter is respiratory rate.25. The method of claim 20, wherein said ventilation parameter is inspiratory flow rate.26. The method of claim 20, wherein a plurality of ventilation parameters are calculated based upon the input body length of the patient.27. The method of claim 26, wherein said ventilation parameters include tidal volume and respiratory rate.28. The method of claim 27, wherein said ventilation parameters include tidal volume and inspiratory flow rate.29. The method of claim 27, wherein said ventilation parameters include respiratory rate and inspiratory flow rate.30. A method of operating a ventilator, comprising the steps of:providing a ventilator having a control device, the control device including means for inputting a body length of a patient to be ventilated;inputting, into the control device, the body length of a patient to be ventilated;calculating, in the control device, at least one ventilation alarm setting based solely upon said body length; andsetting at least one ventilation alarm in accordance with said at least one ventilation alarm setting.31. The method of claim 30, further comprising the steps of:calculating, in the control device, at least one ventilation parameter based upon the input body length; andproviding ventilation in accordance with the calculated at least one ventilation parameter, wherein said ventilation parameter is selected from the group consisting of: tidal volume; respiratory rate; inspiratory flow rate; I:E ratio; inspiratory time; and minute ventilation.32. The method of claim 31, wherein said ventilation parameter is tidal volume.33. The method of claim 31, wherein said ventilation parameter is respiratory rate.34. The method of claim 31, wherein said ventilation parameter is inspiratory flow rate.35. The method of claim 31, wherein a plurality of ventilation parameters are calculated based upon the input body length of the patient.36. The method of claim 35, wherein said ventilation parameters include tidal volume and respiratory rate.37. The method of claim 35, wherein said ventilation parameters include tidal volume and inspiratory flow rate.38. The method of claim 35, wherein said ventilation parameters include respiratory and inspiratory flow rate.39. The method of claim 31, further comprising the steps of:calculating, in the control device, at least one ventilatory limit, wherein said calculating step consists essentially of calculating the at least one ventilatory limit based upon the input body length of the patient; andlimiting at least one ventilation parameter in accordance with the calculated at least one ventilatory limit.40. The method of claim 39, wherein said ventilatory limit is PSV pressure.41. The method of claim 39, wherein said ventilatory limit is PCV pressure.42. The method of claim 39, further comprising the steps of:calculating, in the control device, at least one ventilation parameter based upon the input body length; andproviding ventilation in accordance with the calculated at least one ventilation parameter.43. The method of claim 42, wherein said ventilation parameter is tidal volume.44. The method of claim 42, wherein said ventilation parameter is respiratory rate.45. The method of claim 42, wherein said ventilation parameter is inspiratory flow rate.46. The method of claim 42, wherein a plurality of ventilation parameters are calculated based upon the input body length.47. The method of claim 46, wherein said ventilation parameters include tidal volume and respiratory rate.48. The method of claim 46, wherein said ventilation parameters include tidal volume and inspiratory flow rate.49. The method of claim 46, wherein said ventilation parameters include respiratory rate and inspiratory flow rate.