THE MEDIAN FILTER AS A PREPROCESSOR FOR A PATIENT MONITOR LIMIT ALARM SYSTEM IN INTENSIVE-CARE
THE MEDIAN FILTER AS A PREPROCESSOR FOR A PATIENT MONITOR LIMIT ALARM SYSTEM IN INTENSIVE-CARE
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DOI：
10.1016/0169-2607(91)90039-v
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发表时间：
1991-02-01
影响因子：
6.1
通讯作者：
SUKUVAARA, T
中科院分区：
文献类型：
--
作者：
MAKIVIRTA, A;KOSKI, E;SUKUVAARA, T
我们研究了在心脏病人术后血流动力学监测过程中，去除监测数据中的短暂变化对限值报警质量的影响。 通过中值滤波去除变化。 与传统的监护仪相比，该系统的虚警率降低了三分之二以上。我们设计了一种新型的具有两个中值滤波器的双限报警系统，并进行了临床测试。 与典型的患者监护仪相比，真实报警的比例从12%增加到49%。 平均误报频率为每监测小时4.5次。 没有错过正确的报警。
We studied the effects of removing brief variations in the monitoring data on the quality of limit alarms during the postoperative haemodynamic monitoring of cardiac patients. The variations were removed by median filtering. The false alarm frequency was reduced by more than two-thirds compared with a typical patient monitor.We designed and clinically tested a novel dual-limit alarm system with two median filters. The proportion of true alarms increased from 12% to 49% as compared to a typical patient monitor. The average false alarm frequency was 4.5 alarms per monitored hour. No correct alarms were missed.