System and method for generating a trend parameter based on respiration rate distribution
First Claim
1. A method, comprising:
- detecting respiration of a patient over a period of time;
computing a plurality of respiration rates for the period of time based on the detected patient respiration;
calculating a distribution of the respiration rates by generating a histogram based on the plurality of respiration rates;
generating a trend parameter based on the respiration rate distribution, the parameter based on a ratio between areas under a curve of the histogram, at least one of the areas defined relative to a respiration rate threshold of the histogram;
characterizing heart failure status of the patient based on the trend parameter; and
predicting patient decompensation episodes using the trend parameter, wherein at least one of detecting, computing, generating, and characterizing is performed at least in part using a processor.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient'"'"'s respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient'"'"'s heart failure status. An output signal indicative of the patient'"'"'s heart failure status may be generated based on the trend parameter.
-
Citations
24 Claims
-
1. A method, comprising:
-
detecting respiration of a patient over a period of time; computing a plurality of respiration rates for the period of time based on the detected patient respiration; calculating a distribution of the respiration rates by generating a histogram based on the plurality of respiration rates; generating a trend parameter based on the respiration rate distribution, the parameter based on a ratio between areas under a curve of the histogram, at least one of the areas defined relative to a respiration rate threshold of the histogram; characterizing heart failure status of the patient based on the trend parameter; and predicting patient decompensation episodes using the trend parameter, wherein at least one of detecting, computing, generating, and characterizing is performed at least in part using a processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A system, comprising:
-
a medical device comprising sensing circuitry; detection circuitry disposed in the medical device and coupled to the sensing circuitry, the detection circuitry configured to detect one or more respiratory parameters; and a processor coupled to the detection circuitry, the processor configured to calculate a distribution of a respiration rate comprising a histogram of the respiration rate developed from the one or more respiratory parameters, generate a trend parameter indicative of a ratio between areas under a curve of the histogram with at least one of the areas defined relative to a respiration rate threshold of the histogram, characterize heart failure status of the patient based on the trend parameter, and predict patient decompensation episodes using the trend parameter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
-
23. A system, comprising:
-
means for detecting respiration of a patient over a period of time; means for computing a plurality of respiration rates for the period of time based on the detected patient respiration; means for calculating a distribution of the respiration rates by generating a histogram based on the plurality of respiration rates; means for generating a trend parameter based on the respiration rate distribution, the parameter based on a ratio between areas under a curve of the histogram, at least one of the areas defined relative to a respiration rate threshold of the histogram; characterizing heart failure status of the patient based on the trend parameter; and predicting patient decompensation episodes using the trend parameter. - View Dependent Claims (24)
-
Specification