System and method for correcting a living subject's measured blood pressure
First Claim
1. A system for correcting a living subject'"'"'s measured blood pressure when the living subject'"'"'s actual blood pressure changes during an oscillometric blood-pressure measurement, comprising:
- an oscillometric pulse-wave detection device that detects oscillometric pressure pulse waves produced by a cardiac muscle of a living subject during the oscillometric-blood-pressure measurement, the oscillometric pressure pulse waves propagating through an artery of the living subject;
a blood-pressure measuring circuit that measures a blood pressure of the living subject based on amplitudes of the oscillometric pressure pulse waves detected by the oscillometric pulse-wave detection device; and
an oscillometric-systolic-pressure correcting circuit that corrects a blood pressure measured by the blood-pressure measuring circuit when the living subject'"'"'s blood pressure changes during the oscillometric-blood-pressure measurement, wherein the oscillometric-systolic-pressure correcting circuit identifies a pulse wave that was used by the blood-pressure measuring circuit to determine a diastolic blood pressure of the living subject.
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Abstract
A system and method for correcting a living subject'"'"'s measured blood pressure when the living subject'"'"'s actual blood pressure changes during an oscillometric blood pressure measurement detects oscillometric pressure pulse waves produced by a cardiac muscle of the living subject, measures a blood pressure of the living subject based on the amplitudes of the oscillometric pressure pulse waves, and corrects the measured blood pressure when the living subject'"'"'s blood pressure changes during the blood pressure measurement. The system and method of this invention preferably determine an estimated blood pressure of the living subject, monitor the estimated blood pressure, and determine that the living subject'"'"'s blood pressure changed during the blood pressure measurement when the estimated blood pressure changes by a predetermined amount during the blood pressure measurement. When the living subject'"'"'s blood pressure is determined to have changed during the blood pressure measurement, the system and method of this invention display an estimated systolic blood pressure for the time at which the living subject'"'"'s diastolic blood pressure was measured.
160 Citations
20 Claims
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1. A system for correcting a living subject'"'"'s measured blood pressure when the living subject'"'"'s actual blood pressure changes during an oscillometric blood-pressure measurement, comprising:
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an oscillometric pulse-wave detection device that detects oscillometric pressure pulse waves produced by a cardiac muscle of a living subject during the oscillometric-blood-pressure measurement, the oscillometric pressure pulse waves propagating through an artery of the living subject; a blood-pressure measuring circuit that measures a blood pressure of the living subject based on amplitudes of the oscillometric pressure pulse waves detected by the oscillometric pulse-wave detection device; and an oscillometric-systolic-pressure correcting circuit that corrects a blood pressure measured by the blood-pressure measuring circuit when the living subject'"'"'s blood pressure changes during the oscillometric-blood-pressure measurement, wherein the oscillometric-systolic-pressure correcting circuit identifies a pulse wave that was used by the blood-pressure measuring circuit to determine a diastolic blood pressure of the living subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of correcting a living subject'"'"'s measured blood-pressure when the living subject'"'"'s actual blood-pressure changes during an oscillometric blood-pressure measurement, comprising:
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measuring a blood pressure of a living subject;
determining whether the living subject'"'"'s blood pressure changed during the blood pressure measurement; andcorrecting the measured blood pressure when it is determined that the living subject'"'"'s blood pressure changed during the blood pressure measurement, wherein, correcting the measured blood pressure comprises identifying a pulse wave used to determine a diastolic blood pressure of the living subject. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification