Method and apparatus for providing variable positive airway pressure
First Claim
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1. A system for delivering a flow of gas to an airway of a patient, the system comprising:
- a gas flow generating system adapted to generate a flow of gas;
a patient circuit coupled to the gas flow generating system and adapted to communicate the flow of gas to an airway of a patient;
a sensor associated with the gas flow generating system or the patient circuit and adapted to monitor a characteristic associated with the flow of gas within the patient circuit and to transmit a signal indicative thereof; and
a controller operatively coupled to the gas flow generating system and the sensor, wherein the controller determines whether the patient is experience respiratory activity indicative of Cheyne-Stokes respiration based on the signal, wherein the controller causes the gas flow generating system to deliver a pressure support therapy, and wherein the controller adjusts an expiratory positive airway pressure of the pressure support therapy responsive to the patient experiencing respiratory activity indicative of Cheyne-Stokes respiration.
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Abstract
A method and apparatus for treating a breathing disorder and, more particularly, a method and apparatus for providing a pressurized air flow to an airway of a patient to treat congestive heart failure in combination with Cheyne-Stokes respiration and/or sleep apnea or other breathing disorders. A positive airway pressure ventilator is utilized in combination with an algorithm that adjusts IPAP and EPAP in order to counter a Cheyne-Stokes breathing pattern. Cheyne-Stokes respiration is detected by monitoring a peak flow of the patient.
130 Citations
26 Claims
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1. A system for delivering a flow of gas to an airway of a patient, the system comprising:
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a gas flow generating system adapted to generate a flow of gas;
a patient circuit coupled to the gas flow generating system and adapted to communicate the flow of gas to an airway of a patient;
a sensor associated with the gas flow generating system or the patient circuit and adapted to monitor a characteristic associated with the flow of gas within the patient circuit and to transmit a signal indicative thereof; and
a controller operatively coupled to the gas flow generating system and the sensor, wherein the controller determines whether the patient is experience respiratory activity indicative of Cheyne-Stokes respiration based on the signal, wherein the controller causes the gas flow generating system to deliver a pressure support therapy, and wherein the controller adjusts an expiratory positive airway pressure of the pressure support therapy responsive to the patient experiencing respiratory activity indicative of Cheyne-Stokes respiration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for delivering a flow of gas to an airway of a patient, the system comprising:
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gas flow generating means for generating a flow of gas;
gas flow carrying means for communicating the flow of gas to an airway of a patient;
sensing means for monitoring a characteristic associated with the flow of gas; and
controlling means for (i) determining whether the patient is experience respiratory activity indicative of Cheyne-Stokes respiration based on an output of the sensing means, (ii) causing the gas flow generating means to deliver a pressure support therapy, and (iii) adjusting an expiratory positive airway pressure of the pressure support therapy responsive to the patient experiencing respiratory activity indicative of Cheyne-Stokes respiration. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for delivering pressurized gas to an airway of a patient, the method comprising the steps of:
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delivering a flow of gas to the airway of the patient from a source of gas via a patient circuit according or a pressure support therapy;
sensing a characteristic associated with a flow of gas;
determining whether the patient is experience respiratory activity indicative of Cheyne-Stokes respiration based on the characteristic; and
adjusting an expiratory positive airway pressure of the pressure support therapy responsive to the patient experiencing respiratory activity indicative of Cheyne-Stokes respiration. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification