System and method for monitoring autoregulation
AssigneeCovidien LP
InventorsPaul S. Addison, James N. Watson
Life of this patent
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Abstract
A method for monitoring autoregulation includes, using a processor, receiving a blood pressure signal and an oxygen saturation signal from a patient. The method also includes determining a linear correlation between the blood pressure signal and the oxygen saturation signal and determining a significance value associated with the linear correlation. The method further includes providing a signal indicative of the patient's autoregulation status to an output device based on the linear correlation and the significance value.
Claims20
A method for monitoring autoregulation comprising:
- using a processor:
- receiving a blood pressure signal and an oxygen saturation signal from a patient;
- determining a linear correlation between the blood pressure signal and the oxygen saturation signal;
- determining a significance value associated with the linear correlation;
- and
- providing a signal indicative of the patient's autoregulation status to an output device based on the linear correlation and the significance value.
The method of claim 8, comprising determining the linear correlation between the blood pressure signal and the oxygen saturation signal only while the signal quality metric is above a signal quality metric threshold.
A monitor for monitoring autoregulation comprising:
- a memory storing instructions for:
- receiving a blood pressure signal and an oxygen saturation signal from a patient;
- determining a linear correlation between the blood pressure signal and the oxygen saturation signal;
- determining a significance value associated with the linear correlation;
- providing a signal indicative of the patient's autoregulation status to an output device based on the linear correlation and the significance value;
- and
- a processor configured to execute the instructions.
A system for monitoring autoregulation:
- an oxygen saturation sensor configured to obtain an oxygen saturation signal from a patient;
- a controller comprising a processor configured to:
- receive the oxygen saturation signal and a blood pressure signal from the patient;
- determine a linear correlation between the blood pressure signal and the oxygen saturation signal;
- determine a significance value associated with the linear correlation;
- and
- provide a signal indicative of the patient's autoregulation status to an output device based on the linear correlation and the significance value.
Dependencies are inferred from the claim text.