Oscillometric determination of blood pressure
AssigneeGE Medical Systems Information Technologies, Inc.
InventorsSai Kolluri, Lawrence T. Hersh, Richard Medero
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Abstract
A method and system for eliminating artifacts in an oscillation envelope are disclosed. The method and system comprise evaluating conformance of the oscillometric envelope blood pressure data with a predetermined expected pattern and excluding one or more data points of the oscillometric envelope blood pressure data based on non-conformance with the expected pattern. The expected pattern is based upon generally known physiological principles relating to oscillometric envelopes, a curve fit representing an oscillometric envelope from a previous determination, or other types of criteria.
Claims30
A method of rejecting artifacts in oscillometric envelope blood pressure data comprising:
- evaluating conformance of the oscillometric envelope blood pressure data with a predetermined expected pattern;
- and
- excluding one or more data points of the oscillometric envelope blood pressure data based on non-conformance with the expected pattern.
A method of rejecting artifacts in oscillometric envelope blood pressure data comprising:
- evaluating conformance of the oscillometric envelope blood pressure data with previous blood pressure data that meets acquisition time requirements;
- and
- excluding one or more data points of the oscillometric envelope blood pressure data based on non-conformance with the previous blood pressure data.
A method of rejecting artifacts in oscillometric envelope blood pressure data comprising:
- storing data for a plurality of blood pressure data points, including an acquisition time;
- removing blood pressure data points having an earliest acquisition time from the oscillometric envelope blood pressure data;
- and
- reacquiring the data.
A method of rejecting artifacts in oscillometric envelope blood pressure data comprising:
- applying a curvefit to the oscillometric envelope blood pressure data;
- measuring a quality of deviation of the oscillometric envelope blood pressure data from the curvefit;
- comparing the quality of deviation of the oscillometric envelope blood pressure data to an allowed threshold;
- and
- removing a data point where the quality of deviation for that data point exceeds the allowed threshold.
An apparatus for measuring blood pressure comprising:
- an inflatable cuff;
- a pressurizing apparatus coupled to the cuff for selectively applying pressure by inflating or deflating the cuff;
- a cuff pressure sensor coupled to the cuff for sensing cuff pressure and blood pressure oscillations;
- and
- a programmed control device having functions that include:
- controlling the pressure cuff and pressurizing apparatus;
- evaluating conformance of the blood pressure oscillations with a predetermined expected pattern;
- and
- excluding one or more data points of the blood pressure oscillations based on non-conformance with the expected pattern.
A system for rejecting artifacts in oscillometric envelope blood pressure data comprising:
- means for evaluating conformance of the oscillometric envelope blood pressure data with a predetermined expected pattern;
- and
- means for excluding one or more data points of the oscillometric envelope blood pressure data based on non-conformance with the expected pattern.
A computer program product comprising:
- computer useable medium having computer logic for enabling at least one processor in a computer system to reject artifacts in oscillometric envelope blood pressure data;
- means for evaluating conformance of the oscillometric envelope blood pressure data with a predetermined expected pattern;
- and
- means for excluding one or more data points of the oscillometric envelope blood pressure data based on non-conformance with the expected pattern.
Dependencies are inferred from the claim text.