AUTOMATED PROCESS FOR ASSESSING CARDIAC FILLING PRESSURE NON-INVASIVELY
First Claim
1. A method for automating a process for determining cardiac filling pressure non-invasively, comprising:
- analyzing a photoplethysmography signal having a pulse amplitude, said analyzing being done to determine a point in time that the pulse amplitude of the photoplethysmography signal does not vary by a predetermined amount over a first predetermined time period;
displaying a first instruction on a user interface to inform a user that a second instruction to initiate an expiratory effort will be displayed;
displaying the second instruction on the user interface informing the user to begin an expiratory effort;
comparing the expiratory effort of the user to a predetermined goal range for expiratory effort; and
displaying an indicator of the user'"'"'s expiratory effort relative to the predetermined goal range on the user interface.
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Abstract
An embodiment in accordance with the present invention provides an automated device and method for determining cardiac filling pressure non-invasively. The device includes a computer readable medium programmed to analyze a photoplethysmography signal having a pulse amplitude. The analysis is done to determine a point in time that the pulse amplitude of the photoplethysmography signal does not vary by a predetermined amount over a first predetermined time period. The method also includes displaying instructions for the user to prepare for and begin an expiratory effort. The expiratory effort of the user is compared to a predetermined goal range for expiratory effort, and an indicator of the user'"'"'s expiratory effort relative to the predetermined goal range is displayed on the user interface.
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Citations
20 Claims
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1. A method for automating a process for determining cardiac filling pressure non-invasively, comprising:
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analyzing a photoplethysmography signal having a pulse amplitude, said analyzing being done to determine a point in time that the pulse amplitude of the photoplethysmography signal does not vary by a predetermined amount over a first predetermined time period; displaying a first instruction on a user interface to inform a user that a second instruction to initiate an expiratory effort will be displayed; displaying the second instruction on the user interface informing the user to begin an expiratory effort; comparing the expiratory effort of the user to a predetermined goal range for expiratory effort; and displaying an indicator of the user'"'"'s expiratory effort relative to the predetermined goal range on the user interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for automating a process for determining cardiac filling pressure non-invasively, comprising:
programming a computer readable medium to execute steps comprising; analyzing a photoplethysmography signal having a pulse amplitude, said analyzing being done to determine a point in time that the pulse amplitude of the photoplethysmography signal does not vary by a predetermined amount over a first predetermined time period; transmitting a first instruction to be displayed on a user interface, said first instruction informing a user that a second instruction to initiate an expiratory effort will be displayed; transmitting the second instruction to be displayed on the user interface, said second instruction informing the user to begin an expiratory effort; comparing the expiratory effort of the user to a predetermined goal range for expiratory effort; and transmitting a third instruction to be displayed on the user interface, said third instruction indicating the user'"'"'s expiratory effort relative to the predetermined goal range on the user interface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for automating a process for determining cardiac filling pressure non-invasively, comprising:
a device including a housing, said device including a user interface disposed within said housing, an expiratory effort reception apparatus being coupled to said housing, a photoplethysmograph, and a computer readable medium, wherein said computer readable medium is programmed with steps comprising; analyzing a signal from the photoplethysmograph, said signal having a pulse amplitude, said analyzing being done to determine a point in time that the pulse amplitude of the signal does not vary by a predetermined amount over a first predetermined time period; transmitting a first instruction to be displayed on a user interface, said first instruction informing a user that a second instruction to initiate an expiratory effort will be displayed; transmitting the second instruction to be displayed on the user interface, said second instruction informing the user to begin an expiratory effort; comparing the expiratory effort of the user to a predetermined goal range for expiratory effort; and transmitting a third instruction to be displayed on the user interface, said third instruction indicating the user'"'"'s expiratory effort relative to the predetermined goal range on the user interface. - View Dependent Claims (20)
Specification