Automatic pressure titration
First Claim
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1. A method of providing pressure support to a patient, comprising:
- monitoring whether the patient is responsive or non-responsive to previous pressure increases in a flow of gas provided to the patient, wherein the patient is responsive to previous pressure increases if the previous pressure increases have resolved previous sleep disordered breathing events of the patient and the patient is non-responsive to previous pressure increases if the previous pressure increases have not resolved the previous sleep disordered breathing events of the patient;
detecting an occurrence of a current sleep disordered breathing event in the patient; and
in response to the detecting, performing one or both of;
(i) determining whether an airway of the patient is open or closed, and (ii) determining whether the sleep disordered breathing event is centrally mediated;
in response to determining;
(a) that the airway of the patient is closed, (b) that the sleep disordered breathing event is centrally mediated, or (c) both (a) and (b), determining whether the patient is responsive or non-responsive to previous pressure increases;
in response to determining that the patient is responsive to previous pressure increases, increasing the pressure of the flow of gas provided to the patient; and
in response to determining that the patient in non-responsive to previous pressure increases, decreasing the pressure of the flow of gas provided to the patient or not changing the pressure of the flow of gas provided to the patient.
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Abstract
A pressure support methodology and system that utilizes at least two, and possibly all three, of information relating to (i) airway patency, i.e., the degree to which the patient'"'"'s airway is open, (ii) the primary cause of the current sleep disordered breathing event, and (iii) the patient'"'"'s response to previous pressure changes to automatically titrate pressure when presented with a sleep disordered breathing event. In another embodiment, pressure may be automatically titrated based solely on the primary cause of the sleep disordered breathing event.
39 Citations
12 Claims
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1. A method of providing pressure support to a patient, comprising:
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monitoring whether the patient is responsive or non-responsive to previous pressure increases in a flow of gas provided to the patient, wherein the patient is responsive to previous pressure increases if the previous pressure increases have resolved previous sleep disordered breathing events of the patient and the patient is non-responsive to previous pressure increases if the previous pressure increases have not resolved the previous sleep disordered breathing events of the patient; detecting an occurrence of a current sleep disordered breathing event in the patient; and in response to the detecting, performing one or both of;
(i) determining whether an airway of the patient is open or closed, and (ii) determining whether the sleep disordered breathing event is centrally mediated;in response to determining;
(a) that the airway of the patient is closed, (b) that the sleep disordered breathing event is centrally mediated, or (c) both (a) and (b), determining whether the patient is responsive or non-responsive to previous pressure increases;in response to determining that the patient is responsive to previous pressure increases, increasing the pressure of the flow of gas provided to the patient; and in response to determining that the patient in non-responsive to previous pressure increases, decreasing the pressure of the flow of gas provided to the patient or not changing the pressure of the flow of gas provided to the patient. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pressure support system, comprising:
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a pressure generating system adapted to produce a flow of gas; a patient circuit operatively coupled to the pressure generating system to deliver the flow of gas to an airway of a patient; and a controller operatively coupled to the pressure generating system, the controller being adapted to control a pressure of the flow of gas by; monitoring whether the patient is responsive or non-responsive to previous pressure increases in a flow of gas provided to the patient, wherein the patient is responsive to previous pressure increases if the previous pressure increases have resolved previous sleep disordered breathing events of the patient and the patient is non-responsive to previous pressure increases if the previous pressure increases have not resolved the previous sleep disordered breathing events of the patient; detecting an occurrence of a current sleep disordered breathing event in the patient; in response to the detecting, performing one or both of;
(i) determining whether an airway of the patient is open or closed, and (ii) determining whether the sleep disordered breathing event is centrally mediated;in response to determining;
(a) that the airway of the patient is closed, (b) that the sleep disordered breathing event is centrally mediated, or (c) both (a) and (b), determining whether the patient is responsive or non-responsive to previous pressure increases;in response to determining that the patient is responsive to previous pressure increases, increasing the pressure of the flow of gas provided to the patient; and in response to determining that the patient in non-responsive to previous pressure increases, decreasing the pressure of the flow of gas provided to the patient or not changing the pressure of the flow of gas provided to the patient. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification