Diagnosis of peripheral vascular disease using oxygen saturation
First Claim
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1. A method of diagnosing peripheral vascular disease, comprising:
- measuring oxygen saturation in tissue of a patient during recovery from ischemia;
analyzing the oxygen saturation in the tissue during the recovery; and
diagnosing the patient as having peripheral vascular disease according to changes in the oxygen saturation in the tissue during the recovery.
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Abstract
Techniques for diagnosing peripheral vascular disease using oxygen saturation are provided. Changes in oxygen saturation in tissue during recovery from induced ischemia are measured. The changes are then utilized to diagnose whether a patient has peripheral vascular disease.
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Citations
16 Claims
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1. A method of diagnosing peripheral vascular disease, comprising:
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measuring oxygen saturation in tissue of a patient during recovery from ischemia; analyzing the oxygen saturation in the tissue during the recovery; and diagnosing the patient as having peripheral vascular disease according to changes in the oxygen saturation in the tissue during the recovery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for diagnosing peripheral vascular disease, comprising:
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a device to cause ischemia in tissue a probe that measures oxygen saturation in the tissue of a patient during recovery from induced ischemia; a computer, coupled to the probe, that analyzes the oxygen saturation in the tissue during the recovery and diagnoses the patient as having peripheral vascular disease according to the oxygen saturation in the tissue during the recovery.
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11. A method of diagnosing peripheral vascular disease, comprising:
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measuring oxygen saturation in tissue of a patient during recovery from ischemia; calculating a rate of change of oxygen saturation during the recovery; and diagnosing the patient as having peripheral vascular disease if the rate of change crosses a threshold. - View Dependent Claims (12)
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13. An apparatus for diagnosing peripheral vascular disease, comprising:
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a probe that measures oxygen saturation in tissue of a patient during recovery from ischemia; a computer, coupled to the probe, that calculates a rate of change of oxygen saturation during the recovery and diagnoses the patient as having peripheral vascular disease if the rate of change crosses a threshold.
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14. A method of diagnosing peripheral vascular disease, comprising:
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measuring oxygen saturation in tissue of a patient during recovery from ischemia; calculating a time for oxygen saturation to recover a specified percentage during the recovery; and diagnosing the patient as having peripheral vascular disease if the time for oxygen saturation to recover crosses a threshold. - View Dependent Claims (15)
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16. An apparatus for diagnosing peripheral vascular disease, comprising:
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a probe that measures oxygen saturation in tissue of a patient during recovery from ischemia; a computer, coupled to the probe, that calculates a time for oxygen saturation to recover a specified percentage during the recovery and diagnoses the patient as having peripheral vascular disease if the time for oxygen saturation to recover crosses a threshold.
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Specification