NIBP trigger in response to detected heart rate variability

Details NIBP trigger in response to detected heart rate variability NIBP trigger in response to detected heart rate variability

1997-11-10

2000-04-18

Connor, Cary O'

Surgery

Diagnostic testing

Cardiovascular

128900, A61N 500

Patent

active

060509511

ABSTRACT:
An automated sphygmomanometer which triggers a blood pressure determination upon detection of a significant change in the patient's heart rate variability (HRV). The HRV can be measured directly from the NIBP signal or, when a multiparameter monitor is used, the HRV can be measured from the ECG signal or the NIBP signal. HRV is continuously monitored and the baseline HRV is correlated with baseline blood pressure values. Changes in HRV are displayed continuously on a display so that the clinician can determine whether to initiate an NIBP measurement or, on the other hand, the NIBP measurement can be triggered automatically in response to a change in HRV without any intervention by the clinician. Alternatively, the patient monitor can "learn" the correlation between HRV and blood pressure changes and only alert the clinician when a significant change in HRV has taken place. The technique of the invention allows the clinician to monitor NIBP at less frequent intervals without the concern of missing physiologically significant changes in blood pressure and without the requirement of "check inflates" in a guard mode.

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