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US 2009/0156945 A1Published application
Monitoring respiratory variation of pulse pressure
OwnerRobert A. BARUCHinventor
Life of this patent
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Abstract
A monitoring device may include a display, an input device to receive patient-related data, and logic. The logic may determine the pulse pressure of the patient based on the patient-related data, calculate a respiratory variation of the pulse pressure of the patient, and generate a first value based on the respiratory variation of the pulse pressure of the patient and a mean pulse pressure of the patient. The logic may also output the first value to the display. The logic may update the first value in a continuous, real-time or near real-time manner.
Claims27
A method, comprising:
- receiving arterial blood pressure data associated with a patient;
- determining a heart rate of the patient using the arterial blood pressure data;
- calculating a pulse pressure of the patient based on a difference between a maximum arterial blood pressure of the patient and a minimum arterial blood pressure of the patient over a period of time equal to at least two times a period of the heart rate of the patient;
- determining a respiratory rate of the patient;
- calculating a respiratory variation of the pulse pressure of the patient based on a difference between a maximum pulse pressure of the patient and a minimum pulse pressure of the patient over a period of time equal to at least two times a period of the respiratory rate of the patient;
- and
- calculating a first value based on the respiratory variation of the pulse pressure and a mean pulse pressure of the patient.
4 more elements
A monitoring device, comprising:
- logic configured to:
- receive arterial blood pressure information associated with a patient,
- determine a heart rate of the patient,
- calculate a pulse pressure of the patient by subtracting a minimum arterial blood pressure of the patient from a maximum arterial blood pressure of the patient over a first period of time based on the heart rate of the patient,
- determine a respiratory rate of the patient,
- calculate a respiratory variation of the pulse pressure over a second period of time based on the respiratory rate of the patient, and
- generate a first value based on the respiratory variation of the pulse pressure and an average pulse pressure of the patient determined over the second period of time.
4 more elements
A computer-readable medium having stored thereon sequences of instructions which, when executed by at least one processor, cause the at least one processor to:
- receive arterial blood pressure information associated with a patient;
- determine a heart rate of the patient based on the arterial blood pressure information;
- calculate a pulse pressure of the patient, at a frequency of at least a frequency of the heart rate, based on a maximum arterial blood pressure of the patient and a minimum arterial blood pressure of the patient over a first period of time;
- determine a respiratory rate of the patient;
- calculate a respiratory variation of the pulse pressure over a second period of time based on the respiratory rate of the patient;
- and
- generate a first value based on the respiratory variation of the pulse pressure and an average pulse pressure of the patient.
4 more elements
A method, comprising:
- receiving pulse-related data associated with a patient;
- determining a heart rate of the patient;
- calculating a pulse pressure of the patient, using the pulse-related data, over a period of time equal to at least two times a period of the heart rate of the patient;
- determining a respiratory rate of the patient;
- calculating a respiratory variation of the pulse pressure of the patient based on a difference between a maximum pulse pressure of the patient and a minimum pulse pressure of the patient over a period of time equal to at least two times a period of the respiratory rate of the patient;
- and
- calculating a first value based on the respiratory variation of the pulse pressure and a mean pulse pressure of the patient.
4 more elements
A device, comprising:
- means for receiving at least one of arterial blood pressure information or pulse oximetry information associated with a patient;
- means for determining a heart rate of the patient;
- means for calculating a pulse pressure of the patient based on the arterial blood pressure information or the pulse oximetry information over a first period of time based on the heart rate of the patient;
- means for determining a respiratory rate of the patient;
- means for calculating a respiratory variation of the pulse pressure over a second period of time based on the respiratory rate of the patient;
- means for generating a first value based on the respiratory variation of the pulse pressure and an average pulse pressure of the patient determined over the second period of time;
- and
- means for outputting the first value.
5 more elements
A monitoring device, comprising:
- a display;
- an input device configured to receive patient-related data;
- and
- logic configured to:
- receive at least some of the patient-related data from the input device,
- determine pulse pressure of the patient based on the patient-related data,
- calculate a respiratory variation of the pulse pressure of the patient,
- generate a first value based on the respiratory variation of the pulse pressure of the patient and a mean pulse pressure of the patient,
- output the first value to the display, and
- repeat the determining, calculating, generating and outputting over a period of time in a real-time or near real-time manner.
7 more elements
Dependencies are inferred from the claim text.