Reliability of old and new ventricular fibrillation detection algorithms for automated external defibrillators

Anton Amann¹ , Robert Tratnig² and Karl Unterkofler²

¹Innsbruck Medical University, Department of Anesthesia and General Intensive Care, Anichstr. 35, A-6020 Innsbruck, Austria and Department of Environmental Sciences, ETH-Hönggerberg, CH-8093 Zürich, Switzerland

²Research Center PPE, FH-Vorarlberg, Achstr. 1, A-6850 Dornbirn, Austria

author email corresponding author email

BioMedical Engineering OnLine 2005, 4:60doi:10.1186/1475-925X-4-60


Published:	27 October 2005

Abstract

Background

A pivotal component in automated external defibrillators (AEDs) is the detection of ventricular fibrillation by means of appropriate detection algorithms. In scientific literature there exists a wide variety of methods and ideas for handling this task. These algorithms should have a high detection quality, be easily implementable, and work in real time in an AED. Testing of these algorithms should be done by using a large amount of annotated data under equal conditions.

Methods

For our investigation we simulated a continuous analysis by selecting the data in steps of one second without any preselection. We used the complete BIH-MIT arrhythmia database, the CU database, and the files 7001 – 8210 of the AHA database. All algorithms were tested under equal conditions.

Results

For 5 well-known standard and 5 new ventricular fibrillation detection algorithms we calculated the sensitivity, specificity, and the area under their receiver operating characteristic. In addition, two QRS detection algorithms were included. These results are based on approximately 330 000 decisions (per algorithm).

Conclusion

Our values for sensitivity and specificity differ from earlier investigations since we used no preselection. The best algorithm is a new one, presented here for the first time.