Determination system for determining a heart failure risk
AssigneeKoninklijke Philips N.V.
InventorRonaldus Maria AARTS
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Abstract
The invention relates to a determination system (1) for determining a heart failure risk for a subject (4). The determination system is adapted to provide a cardiogram selected from a group consisting of a ballistocardiogram, a seismocardiogram and an impedance cardiogram of the subject, to detect at least one of a presence of a postextrasystolic potentiation (PESP) and a disturbed force-frequency relation (FFR) based on the provided cardiogram and to determine the heart failure risk based on this detection. By using the detection of the presence of the PESP and/or of a disturbed FFR, the heart failure risk can be reliably determined. In particular, it can be determined that the heart failure risk is relatively large, if a PESP is not present and/or if the FFR is disturbed.
Claims13
A determination system for determining a heart failure risk for a subject, wherein the determination system comprises:
- a cardiogram providing unit for providing a cardiogram selected from a group consisting of a ballistocardiogram, a seismocardiogram and an impedance cardiogram of the subject;
- and
- a heart failure risk determination unit for determining the heart failure risk based on the cardiogram, wherein the heart failure risk determination unit is adapted to:
- determine peak values for different times, which are indicative of heights of the peaks of the left ventricular pressure over time, based on the provided cardiogram for determining a temporal behavior of characteristics of the left ventricular pressure,
- provide rules which include a first peak value threshold and a second peak value threshold and which define the detection of the presence of a postextrasystolic potentiation (PESP) depending on whether a) a peak value is smaller than the first peak value threshold and b) the following peak value is not larger than the second peak value threshold, and
- determine the heart failure risk based on the determined temporal behavior and the provided rules.
A method for determining a heart failure risk for a subject, wherein the method comprises:
- providing a cardiogram selected from a group consisting of a ballistocardiogram, a seismocardiogram and an impedance cardiogram of the subject by a cardiogram providing unit;
- determining the heart failure risk based on the cardiogram by a heart failure risk determination unit, wherein the heart failure risk determination unit:
- i) determines peak values for different times, which are indicative of heights of the peaks of the left ventricular pressure over time, based on the provided cardiogram for determining a temporal behavior of characteristics of the left ventricular pressure,
- ii) provides rules which include a first peak value threshold and a second peak value threshold and which define the detection of the presence of a postextrasystolic potentiation depending on whether a) a peak value is smaller than the first peak value threshold and b) the following peak value is not larger than the second peak value threshold, and
- iii) determines the heart failure risk based on the determined temporal behavior and the provided rules.
A non-transitory computer program for determining a heart failure risk for a subject, the computer program comprising program code means for causing a determination system to carry out a determination method, when the computer program is run on the determination system, the method comprising:
- providing a cardiogram selected from a group consisting of a ballistocardiogram, a seismocardiogram and an impedance cardiogram of the subject by a cardiogram providing unit;
- determining the heart failure risk based on the cardiogram by a heart failure risk determination unit, wherein the heart failure risk determination unit:
- i) determines peak values for different times, which are indicative of heights of the peaks of the left ventricular pressure over time, based on the provided cardiogram for determining a temporal behavior of characteristics of the left ventricular pressure,
- ii) provides rules which include a first peak value threshold and a second peak value threshold and which define the detection of the presence of a postextrasystolic potentiation depending on whether a) a peak value is smaller than the first peak value threshold and b) the following peak value is not larger than the second peak value threshold, and
- iii) determines the heart failure risk based on the determined temporal behavior and the provided rules.
Dependencies are inferred from the claim text.