Ventilation method and control of a ventilator based on same
First Claim
1. A method of controlling a ventilator apparatus comprising the steps of:
- a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T),b) monitoring expiratory gas flow,c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern,d) setting a low time (T2) based on the expiratory gas flow pattern,e) determining lung condition based on the expiratory gas flow pattern,f) categorizing the lung condition, andg) adjusting T2 based on the category.
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Accused Products
Abstract
The invention provides an improved ventilation method and method for controlling a ventilator apparatus in accordance with same. More specifically, the present invention relates to a method of controlling a ventilator apparatus comprising the steps of placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), monitoring expiratory gas flow, analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, and setting and/or adjusting a low time (T2) based on the expiratory gas flow pattern. Alternatively, the present invention relates to a method of controlling a ventilator apparatus comprising the steps of placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), and setting a low airway pressure (P2) of substantially zero cmH2O.
117 Citations
24 Claims
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1. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, e) determining lung condition based on the expiratory gas flow pattern, f) categorizing the lung condition, and g) adjusting T2 based on the category. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern. d) setting a low time (T2) based on the expiratory gas flow pattern, and f) monitoring the expiratory gas flow pattern to determine the presence of an inflection point. - View Dependent Claims (7, 8)
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9. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, and f) maintaining an end expiratory lung volume.
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10. A method of controlling a ventilator apparatus comprising the steps of;
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, and f) determining a peak expiratory gas flow. - View Dependent Claims (11)
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12. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, and f) monitoring blood oxygen levels.
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13. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, and f) monitoring blood carbon dioxide levels.
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14. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) monitoring expiratory gas flow, c) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, d) setting a low time (T2) based on the expiratory gas flow pattern, and f) controlling the ventilator with a control unit. - View Dependent Claims (15)
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16. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) setting a low airway pressure (P2) of substantially zero cmH2O, and c) substantially simultaneously increasing machine minute ventilation and decreasing spontaneous minute ventilation, wherein the mode comprises a preset continuous positive airway pressure (CPAP) level mode with an intermittent pressure release.
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17. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) setting a low airway pressure (P2) of substantially zero cmH2O, and c) substantially simultaneously adjusting a high airway pressure (P1) and a high time (T1), wherein the mode comprises a preset continuous positive airway pressure (CPAP) level mode with an intermittent pressure release and the adjusting step comprises increasing P1.
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18. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure (P) and time (T), b) setting a low airway pressure (P2) of substantially zero cmH2O, c) monitoring blood carbon dioxide levels for hypercarbia, and d) increasing a high airway pressure (P1) and a high time (T1) substantially contemporaneously to reduce blood carbon dioxide levels. - View Dependent Claims (19, 20)
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21. A method of controlling a ventilator apparatus comprising the steps of:
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a) placing a ventilator in a mode capable of adjusting airway pressure and time, b) measuring blood oxygen saturation levels and blood carbon dioxide levels, c) calculating the ratio of spontaneous minute ventilation to machine minute ventilation, d) calculating the sum of the spontaneous minute ventilation and the machine minute ventilation to obtain a total minute ventilation, e) assessing sedation level, f) monitoring airway pressure, expiatory gas flow, inspiratory gas flow, and gas volume, g) analyzing the expiratory gas flow over time (T) to establish an expiratory gas flow pattern, h) setting a high airway pressure (P1) and a high time (T1), i) setting a low airway pressure (P2) of substantially zero cmH2O, and j) setting a low time (T2) based on the expiratory gas flow pattern. - View Dependent Claims (22, 23, 24)
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Specification