Method And System For Delivering A Multi-Breath, Low Flow Recruitment Maneuver
First Claim
1. A method executable on a computerized ventilator for delivering a multi-breath, low flow recruitment maneuver during ventilation of a patient, comprising:
- receiving user input, including one or more of;
a total number of ascending breath sets, a total number of descending breath sets, an initial baseline pressure, a total increase in baseline pressure, a peak inspiratory pressure, and a peak targeted flow;
determining an ascending breath set change in baseline pressure for each ascending breath set;
determining a descending breath set change in baseline pressure for each descending breath set;
delivering a plurality of breaths at low flow in one or more ascending breath sets of an ascending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure plus the total increase in baseline pressure; and
delivering a plurality of breaths at low flow in one or more descending breath sets of a descending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure.
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Abstract
This disclosure describes systems and methods for delivering one or more low flow recruitment maneuvers to a patient while on a ventilator. Embodiments described herein provide methods for delivering low flow recruitment maneuvers wherein either or both of the inspiratory and expiratory phases of the recruitment maneuver are maintained by the ventilator at a low flow. Embodiments described herein provide for single-breath recruitment maneuvers and multi-breath recruitment maneuvers at low flow. Embodiments described herein provide for graphical display of a pressure-volume loop (PV loop) for both single-breath and multi-breath recruitment maneuvers. Embodiments described herein also disclose an automated ventilator functionality whereby recruitment maneuvers settings and/or post-recruitment maneuver settings for resuming prescribed ventilation may be set via a graphical user interface. Other embodiments described herein enable a clinician to configure the ventilator to synchronize the end the recruitment maneuver with patient-triggered inspiration for post-recruitment maneuver ventilation.
138 Citations
20 Claims
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1. A method executable on a computerized ventilator for delivering a multi-breath, low flow recruitment maneuver during ventilation of a patient, comprising:
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receiving user input, including one or more of;
a total number of ascending breath sets, a total number of descending breath sets, an initial baseline pressure, a total increase in baseline pressure, a peak inspiratory pressure, and a peak targeted flow;determining an ascending breath set change in baseline pressure for each ascending breath set; determining a descending breath set change in baseline pressure for each descending breath set; delivering a plurality of breaths at low flow in one or more ascending breath sets of an ascending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure plus the total increase in baseline pressure; and delivering a plurality of breaths at low flow in one or more descending breath sets of a descending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 19)
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14. A method for delivering a multi-breath, low flow recruitment maneuver during ventilation of a patient, comprising:
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receiving user input, including one or more of;
a total number of ascending breath sets, a total number of breaths for each ascending breath set, a total number of descending breath sets, a total number of breaths for each descending breath set, an initial baseline pressure, a total increase in baseline pressure, a peak inspiratory pressure, and a peak targeted flow;determining an ascending breath set change in baseline pressure for each ascending breath set; determining a descending breath set change in baseline pressure for each descending breath set; delivering inspiratory pressure in each breath in a first ascending breath set until pressure is equal to peak inspiratory pressure, wherein inspiratory pressure is delivered at a flow less than the peak targeted flow; releasing expiratory pressure in each breath in the first ascending breath set until pressure is equal to baseline pressure plus a first ascending breath set change in baseline pressure, wherein expiratory pressure is released at a flow less than the peak targeted flow; determining whether the first ascending breath set is a final ascending breath set; upon determining that the first ascending breath set is the final ascending breath set, delivering inspiratory pressure in each breath in a first descending breath set until pressure is equal to peak inspiratory pressure, wherein inspiratory pressure is delivered at a flow less than the peak targeted flow; releasing expiratory pressure in each breath in a first descending breath set until pressure is equal to baseline pressure plus the total increase in baseline pressure minus the first descending breath set change, wherein expiratory pressure is released at a flow less than the peak targeted flow; determining whether the first descending breath set is a final descending breath set; and upon determining that the first descending breath set is the final descending breath set, determining that the multi-breath, low flow recruitment maneuver is complete. - View Dependent Claims (15, 16, 17, 18)
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20. A ventilatory system for delivering a multi-breath, low flow recruitment maneuver during ventilation of a patient, comprising:
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at least one processor; and at least one memory, communicatively coupled to the at least one processor and containing instructions that, when executed by the at least one processor, perform a method comprising; receiving user input, including one or more of;
a total number of ascending breath sets, a total number of descending breath sets, an initial baseline pressure, a total increase in baseline pressure, a peak inspiratory pressure, and a peak targeted flow;determining an ascending breath set change in baseline pressure for each ascending breath set; determining a descending breath set change in baseline pressure for each descending breath set; delivering a plurality of breaths at low flow in one or more ascending breath sets of an ascending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure plus the total increase in baseline pressure; and delivering a plurality of breaths at low flow in one or more descending breath sets of a descending phase of a multi-breath, low flow recruitment maneuver until baseline pressure is equal to the initial baseline pressure.
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Specification