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US 8,801,619 B2Granted
Photoplethysmography for determining ventilation weaning readiness
AssigneeCovidien LP
InventorsClark R. Baker, Jr., Shannon Campbell
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure relate to a system and method for determining a likelihood of successful ventilator weaning for a patient undergoing mechanical or assisted ventilation. Specifically, embodiments provided herein include methods and systems for determining or predicting weaning readiness in a patient based on physiological parameters determined via photoplethysmography.
Claims20
A monitor, comprising:
- an input circuit configured to receive a photoplethysmography signal from a ventilated patient;
- a memory storing an algorithm configured to determine one or more characteristics of the photoplethysmography signal indicative of a ventilation weaning readiness and to determine the ventilation weaning readiness of the ventilated patient based on the one or more characteristics, wherein the one or more characteristics comprise pulse amplitude, and wherein the algorithm is configured to determine weaning readiness based at least in part on an increase in pulse amplitude during an inspiration phase relative to an exhalation phase of a breathing cycle of the ventilated patient;
- a processor configured to execute the algorithm;
- and
- a display configured to provide an indication of the ventilation weaning readiness of the ventilated patient.
2 more elements
A system for determining ventilation weaning readiness comprising:
- a sensor configured to acquire photoplethysmography data from a ventilated patient and to generate a signal relating to the photoplethysmography data;
- and
- a monitor configured to:
- receive the signal;
- determining a ventilation weaning readiness of the patient based at least in part on the signal;
- and
- provide an indication of ventilation weaning readiness, wherein the indication of ventilation weaning readiness is based at least in part on an increased pulse amplitude during inspiration relative to exhalation.
4 more elements
A system for determining ventilation weaning readiness, comprising:
- a sensor configured to acquire photoplethysmography data from a ventilated patient and generate a signal relating to the photoplethysmography data;
- and
- a monitor configured to:
- receive the signal;
- determine a ventilation weaning readiness of the patient based at least in part on the signal;
- and provide an indication of the ventilation weaning readiness, wherein the indication of ventilation weaning readiness is based at least in part on a correlation between pulse amplitude modulation and respiration rate.
3 more elements
A system for determining ventilation weaning readiness, comprising:
- a sensor configured to acquire photoplethysmography data from a ventilated patient and generate a signal relating to the photoplethysmography data;
- and
- a monitor configured to:
- receive the signal;
- determine a ventilation weaning readiness of the patient based at least in part on the signal;
- and
- provide an indication of the ventilation weaning readiness, wherein the indication of ventilation weaning readiness is based at least in part on an increased heart rate during inspiration relative to exhalation.
4 more elements
A monitor, comprising:
- an input circuit configured to receive a photoplethysmography signal from a ventilated patient;
- a memory storing an algorithm configured to determine one or more characteristics of the photoplethysmography signal indicative of a ventilation weaning readiness and to determine the ventilation weaning readiness of the ventilated patient based on the one or more characteristics, wherein the one or more characteristics comprise pulse pressure, and wherein the algorithm is configured to determine weaning readiness based at least in part on an increase in pulse pressure during an inspiration phase relative to an exhalation phase of a breathing cycle of the ventilated patient;
- a processor configured to execute the algorithm;
- and
- a display configured to provide an indication of the ventilation weaning readiness of the ventilated patient.
2 more elements
A monitor, comprising:
- an input circuit configured to receive a photoplethysmography signal from a ventilated patient;
- a memory storing an algorithm configured to determine one or more characteristics of the photoplethysmography signal indicative of a ventilation weaning readiness and to determine the ventilation weaning readiness of the ventilated patient based on the one or more characteristics, wherein the one or more characteristics comprise heart rate, and wherein the algorithm is configured to determine weaning readiness based at least in part on an increase in heart rate during an inspiration phase relative to an exhalation phase of a breathing cycle of the ventilated patient;
- a processor configured to execute the algorithm;
- and
- a display configured to provide an indication of the ventilation weaning readiness of the ventilated patient.
2 more elements
A monitor, comprising:
- an input circuit configured to receive a photoplethysmography signal from a ventilated patient;
- a memory storing an algorithm configured to determine one or more characteristics of the photoplethysmography signal indicative of a ventilation weaning readiness and to determine the ventilation weaning readiness of the ventilated patient based on the one or more characteristics, wherein the one or more characteristics comprise pulse amplitude modulation and respiration rate, and wherein the algorithm is configured to determine weaning readiness based at least in part on a correlation between pulse amplitude modulation and respiration rate;
- a processor configured to execute the algorithm;
- and
- a display configured to provide an indication of the ventilation weaning readiness of the ventilated patient.
2 more elements
A monitor, comprising:
- an input circuit configured to receive a photoplethysmography signal from a ventilated patient;
- a memory storing an algorithm configured to determine one or more characteristics of the photoplethysmography signal indicative of a ventilation weaning readiness and to determine the ventilation weaning readiness of the ventilated patient based on the one or more characteristics, wherein the one or more characteristics comprise heart rate variability, and wherein the algorithm is configured to determine weaning readiness based at least in part on an increase in heart rate variability during an inspiration phase relative to an exhalation phase of a breathing cycle of the ventilated patient;
- a processor configured to execute the algorithm;
- and
- a display configured to provide an indication of the ventilation weaning readiness of the ventilated patient.
2 more elements
Dependencies are inferred from the claim text.