Weaning and decision support system for mechanical ventilation
First Claim
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1. A method encoded on a data storage medium as executable software for optimizing mechanical ventilation of a patient, the method comprising steps of:
- (a) receiving patient input data representing respiratory airway resistance (RES), respiratory compliance (COMP), and data indicative of patient'"'"'s ideal body weight (WEIGHT);
(b) receiving data representing patient oxygen level (PO2);
(c) receiving input data representing measured spontaneous breathing rate (FSP), tidal volume (VTMS), inspired oxygen fraction (FIO), and positive end-expiratory pressure (PEEP);
(d) determining optimal ventilation level and optimal respiratory rate for the patient based on data received in step (a);
(e) determining a level of controlled ventilation for the patient based on the FSP, the VTMS, the optimal ventilation level, and the optimal respiratory rate;
(f) determining required levels of FIO and PEEP based on the patient oxygen level data received in step (b) and the patient FIO and PEEP data received in step (c); and
(g) generating outputs representing the required levels of FIO, PEEP, and the controlled ventilation for a next breath of the patient;
the steps performed by a processor executing the software.
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Abstract
A system for mechanical ventilation treatment is described. In one embodiment the system provides advice on treatment and/or weaning of patients from mechanical ventilation based on the patient'"'"'s conditions. In another embodiment the system includes apparatus to monitor and analyze the patient'"'"'s data and data from the mechanical ventilator and controls the ventilator automatically.
78 Citations
67 Claims
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1. A method encoded on a data storage medium as executable software for optimizing mechanical ventilation of a patient, the method comprising steps of:
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(a) receiving patient input data representing respiratory airway resistance (RES), respiratory compliance (COMP), and data indicative of patient'"'"'s ideal body weight (WEIGHT); (b) receiving data representing patient oxygen level (PO2); (c) receiving input data representing measured spontaneous breathing rate (FSP), tidal volume (VTMS), inspired oxygen fraction (FIO), and positive end-expiratory pressure (PEEP); (d) determining optimal ventilation level and optimal respiratory rate for the patient based on data received in step (a); (e) determining a level of controlled ventilation for the patient based on the FSP, the VTMS, the optimal ventilation level, and the optimal respiratory rate; (f) determining required levels of FIO and PEEP based on the patient oxygen level data received in step (b) and the patient FIO and PEEP data received in step (c); and (g) generating outputs representing the required levels of FIO, PEEP, and the controlled ventilation for a next breath of the patient; the steps performed by a processor executing the software. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An apparatus for optimizing mechanical ventilation of a patient, comprising:
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a computing system; digital readable memory coupled to the computing system; and transducers providing patient input signals to the computing system representing respiratory airway resistance (RES), respiratory compliance (COMP), and ventilation data representing patient'"'"'s spontaneous breathing rate (FSP), and measured tidal volume (VTMS); wherein the computing system executing a program stored in the memory determines output data representing optimal ventilation level and optimal respiratory rate of the patient based on data indicative of patient'"'"'s ideal body weight (WEIGHT) stored in memory and data representing RES and COMP, and provides output data representing optimal ventilation and optimal respiratory rate and a controlled level of mechanical ventilation based on the optimal ventilation data, the optimal respiratory rate data, FSP, and VTMS. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method for automatically controlling a mechanical ventilator to wean a patient from mechanical ventilation, comprising the steps of:
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(a) providing patient data representing respiratory airway resistance (RES) and respiratory compliance (COMP); (b) providing patient data indicative of ideal body weight (WEIGHT); (c) providing patient data representing measured oxygen level (PO2); (d) providing patient data representing tidal volume (VTMS) and spontaneous breathing rate (FSP); (e) providing patient data representing positive end-expiratory pressure (PEEP); (f) determining based on data provided in steps (a) and (b), optimal ventilation and optimal respiratory rate of the patient; (g) determining whether weaning should start or continue and a level of controlled mechanical ventilation based on the optimal ventilation, the optimal respiratory rate, and patient data provided in step (d); and (h) providing a control signal representing a controlled ventilation level based on data from step (g) and supplying the control signal to the mechanical ventilator to control it automatically for a next breath of the patient. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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Specification