发明名称 |
ECG monitoring with reduced false asystole alarms |
摘要 |
A patient monitor comprises: an electrocardiograph (14, 20) monitoring an electrocardiographic signal (40) of a patient (10); a secondary physiological signal monitor (16, 20) monitoring a second physiological signal (50) of the patient concurrently with the electrocardiograph monitoring the electrocardiographic signal of the patient; an alarm condition detector (42, 44) configured to detect an alarm condition based on the electrocardiographic signal of the patient; an alarm condition validator (52, 54, 56) configured to validate the alarm condition based on pulse regularity of a pulsatile component of the concurrently monitored second physiological signal of the patient; and an alarm indicator (24, 26, 58) configured to generate a human perceptible alarm conditional upon both the alarm condition detector detecting an alarm condition and the alarm condition validator validating the alarm condition. |
申请公布号 |
US8989853(B2) |
申请公布日期 |
2015.03.24 |
申请号 |
US201013321841 |
申请日期 |
2010.05.12 |
申请人 |
Koninklijke Philips N.V. |
发明人 |
Zong Wei |
分类号 |
A61B5/04;A61B5/0452;A61B5/021;A61B5/024;A61B5/0468 |
主分类号 |
A61B5/04 |
代理机构 |
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代理人 |
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主权项 |
1. A patient monitor comprising:
an electrocardiograph monitoring an electrocardiographic signal of a patient; a secondary physiological signal monitor monitoring a second physiological signal of the patient concurrently with the electrocardiograph monitoring the electrocardiographic signal of the patient; an alarm condition detector configured to detect an asystole alarm condition in which the electrocardiographic signal of the patient does not exhibit pulsatile behavior indicative of a beating heart; an alarm condition validator configured to validate the asystole alarm condition based on whether a pulse regularity index (PRI) quantifying pulse regularity of a pulsatile component of the concurrently monitored second physiological signal of the patient satisfies a validation criterion, the PRI being computed based on a set of N+1 pulses including (i) a current pulse of the pulsatile component of the monitored second physiological signal and (ii) N immediately preceding pulses of the pulsatile component of the monitored second physiological signal, where N is a positive integer greater than or equal to two, wherein the alarm condition validator is configured to define one or more pulses of the set of N+1 pulses as a forced pulse detection conditional upon the pulsatile component of the monitored second physiological signal having no pulses in a preselected time interval and wherein the PRI is computed based on (i) amplitude information for the pulses of the set of N+1 pulses including any forced pulse detections, (ii) time interval information between the pulses of the set of N+1 pulses including any forced pulse detections, and (iii) the number of forced pulse detections; and an alarm indicator configured to generate a human perceptible alarm conditional upon both the alarm condition detector detecting an asystole alarm condition and the asystole alarm condition validator validating the asystole alarm condition. |
地址 |
Eindhoven NL |