Monitoring positive end expiratory pressure with photoplethysmography
First Claim
1. A method for monitoring the application of positive end expiratory pressure (PEEP) to an individual, comprisingisolating, with a computer, a pulsatile arterial component (PAC) signal and a venous impedance component (VIC) signal of a PPG signal obtained from a central source site of the individual;
- monitoring the PAC signal, the VIC signal, or both, over time; and
adjusting the level of PEEP based on the PAC signal, the VIC signal, or both.
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Abstract
Provided according to embodiments of the invention are methods for monitoring the application of positive end expiratory pressure (PEEP) to an individual. Such methods include isolating a pulsatile arterial component (PAC) signal and a venous impedance component (VIC) signal of a PPG signal obtained from a central source site of the individual; monitoring the PAC signal, the VIC signal, or both, over time; and adjusting the level of PEEP based on the PAC signal, the VIC signal, or both.
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Citations
16 Claims
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1. A method for monitoring the application of positive end expiratory pressure (PEEP) to an individual, comprising
isolating, with a computer, a pulsatile arterial component (PAC) signal and a venous impedance component (VIC) signal of a PPG signal obtained from a central source site of the individual; -
monitoring the PAC signal, the VIC signal, or both, over time; and adjusting the level of PEEP based on the PAC signal, the VIC signal, or both. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for adjusting the level of positive end expiratory pressure (PEEP) provided to an individual, comprising:
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a pulse oximeter probe secured to the individual; at least one processing device in communication with the pulse oximeter probe, wherein the at least one processing device isolates a PAC signal and a VIC signal from the PPG signal; a ventilator providing oxygen-rich gas to the individual as PEEP, wherein the ventilator automatically adjusts the level of PEEP based on the PAC signal, the VIC signal, or both. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification