GE Healthcare IntelliRate Technology for Patient Monitoring - Manual (Page 4)

Clinical Performance
The IntelliRate software algorithm has been evaluated
on 55 CICU patient recordings equaling over 900 hours
of monitoring time. After reviewing the multi-parameter
waveform data to positively identify all true Tachycardia,
Bradycardia, and Asystole conditions, alarm performance
was measured when only ECG information was used.
2 Next,
alarm performance was measured using the IntelliRate
software to demonstrate the improvement in alarm accuracy.
The results of the comparison appear in Figure 1.
Asystole Alarms
True Alarms False Alarms
ECG Only 0 18
IntelliRate 0 2
“False Asystole Alarms Reduced by 89%”
Bradycardia Alarms
Sensitivity Positive
Predictive Value
ECG Only 96% 58%
IntelliRate 94% 84%
“False Low Heart Rate Alarms Reduced by 72%”
Tachycardia Alarms
Sensitivity Positive
Predictive Value
ECG Only 93% 86%
IntelliRate 93% 88%
“Findings not statistically signifi cant“
Figure 1. IntelliRate Performance
Conclusion
IntelliRate software represents a major advance in eff orts
to reduce the occurrence of false alarms in critical care
environments. By utilizing the signal information from
multiple parameters, the accuracy and reliability of heart rate
measurements can be signifi cantly improved. This enhanced
accuracy, when used in the context of data available from
other monitored parameters, signifi cantly reduces false
alarm rates and can help enhance safety for pacemaker
patients.
References
1 Tsien, C.L. and J.C. Fackler, Poor Prognosis for Existing
Monitors in the Intensive Care Unit, Critical Care Medicine
25, 614-619 (1977).
2 The ECG alarm performance was established using GE
EK-Pro ECG analysis algorithm. This algorithm has been
shown to be over 99% accurate in QRS detection as
measured on the standardized MIT-BIH database.
imagination at work
©2010 General Electric Company – All rights reserved.
GE and GE Monogram are trademarks of
General Electric Company.
IntelliRate is a trademark of GE Medical Information
Technologies Systems, Inc.
General Electric Company reserves the right to make
changes in specifi cation and features shown herein, or
discontinue the product described at any time without
notice or obligation. Contact your GE representative for
the most current information
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Additional resources
For white papers, guides and other instructive materials about
GE Healthcare’s clinical measurements, technologies and
applications, please visit http://clinicalview.gehealthcare.com/