THE MEDIAN FILTER AS A PREPROCESSOR FOR A PATIENT MONITOR LIMIT ALARM SYSTEM IN INTENSIVE-CARE

被引：69

作者：

MAKIVIRTA, A

KOSKI, E

KARI, A

SUKUVAARA, T

机构：

[1] TECH RES CTR FINLAND,MED ENGN LAB,SF-33101 TAMPERE,FINLAND

[2] KUOPIO UNIV HOSP,SF-70210 KUOPIO,FINLAND

来源：

COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE | 1991年 / 34卷 / 2-3期

关键词：

ALARMS; MONITORING; PHYSIOLOGICAL; MEDIAN FILTERING;

D O I：

10.1016/0169-2607(91)90039-V

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 [计算机应用技术]; 0835 [软件工程];

摘要：

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.

引用

页码：139 / 144

页数：6

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