Method and apparatus for predicting a need for a blood transfusion
First Claim
1. A method comprising:
- obtaining, on a processor, first data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during a time interval of a treatment of a patient;
applying, on the processor, coefficients to the values for the one or more parameters;
determining, on the processor, second data that indicates a prediction that the patient will require a blood transfusion during a time range within a time period from 15 minutes to 24 hours after the time interval of the treatment based on applying the coefficients to the values for the one or more parameters; and
ordering one or more blood units for a medical facility based on the prediction so that the patient receives a transfusion of the one or more blood units during the time range at the medical facility;
wherein the prediction is based on the time range and wherein the coefficients to determine the prediction based on the time range are in a range from −
100 to 35.
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Abstract
A method is provided for predicting that a patient will require a blood transfusion during a treatment. The method includes obtaining, on a processor, first data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during the treatment. The method further includes applying, on the processor, coefficients to the values for the one or more parameters. The method further includes determining, on the processor, second data that indicates a prediction that the patient will require the blood transfusion during the treatment based on applying the coefficients to the values for the one or more parameters. An apparatus is also provided for predicting that the patient will require the blood transfusion during the treatment.
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Citations
19 Claims
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1. A method comprising:
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obtaining, on a processor, first data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during a time interval of a treatment of a patient; applying, on the processor, coefficients to the values for the one or more parameters; determining, on the processor, second data that indicates a prediction that the patient will require a blood transfusion during a time range within a time period from 15 minutes to 24 hours after the time interval of the treatment based on applying the coefficients to the values for the one or more parameters; and ordering one or more blood units for a medical facility based on the prediction so that the patient receives a transfusion of the one or more blood units during the time range at the medical facility; wherein the prediction is based on the time range and wherein the coefficients to determine the prediction based on the time range are in a range from −
100 to 35. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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obtaining, on a processor, data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform during a time interval of a treatment of a plurality of patients; assigning, on the processor, a result for each patient based on whether the patient received a blood transfusion during the treatment; fitting, on the processor, the data to the results for the plurality of patients; determining, on the processor, coefficients for the one or more parameters, to determine a model for predicting whether a patient will require a blood transfusion during a time range within a time period from 15 minutes to 24 hours after the time interval based on an input of values for the one or more parameters; and storing on a computer-readable medium data that indicates the coefficients for the one or more parameters; wherein the model is for predicting whether the patient will require the blood transfusion within the time range and wherein the coefficients for the model are in a range from −
100 to 35. - View Dependent Claims (17)
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18. An apparatus comprising:
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a pulse oximeter configured to measure first data that indicates values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during a time interval of a treatment of a patient; a display device; and at least one processor connected to the pulse oximeter to receive the first data of the one or more parameters; at least one memory including one or more sequence of instructions; the at least one memory and the one or more sequence of instructions configured to, with the at least one processor, cause the apparatus to perform at least the following; apply coefficients to the values for the one or more parameters, determine second data that indicates a prediction that the patient will require a blood transfusion during a time range within a time period from 15 minutes to 24 hours after the time interval of the treatment based on applying the coefficients to the values for the one or more parameters, and order one or more blood units for a medical facility based on the prediction so that the patient receives a transfusion of the one or more blood units during the time range at the medical facility; wherein the prediction is based on the time range and wherein the coefficients to determine the prediction based on the time range are in a range from −
100 to 35.
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19. A non-transitory computer-readable medium carrying one or more sequences of instructions, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of:
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applying coefficients to values for one or more parameters of a characteristic of a continuous photoplethysmographic (PPG) waveform collected during a time interval of a treatment of a patient; determining a prediction that the patient will require a blood transfusion during a time range within a time period from 15 minutes to 24 hours after the time interval of the treatment based on applying the coefficients to the values for the one or more parameters; and ordering one or more blood units for a medical facility based on the prediction so that the patient receives a transfusion of the one or more blood units during the time range at the medical facility; wherein the prediction is based on the time range and wherein the coefficients to determine the prediction based on the time range are in a range from −
100 to 35.
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Specification