Preventice Technologies BodyGuardian One, Инструкция по эксплуатации, Страница: 24 / 28

BodyGuardian One – Instructions for Use 21
Appendix D: Arrhythmia Detection Performance
The BodyGuardian One incorporates a real-time embedded arrhythmia detection algorithm.
The processing steps include signal bandpass and morphological filtering, estimation of the
motion artifact, analysis of the slope, width and amplitude of the signal, decision making logic
to determine location and length of the QRS complexes, atrial activity analysis and template
matching for AF detection.
Algorithm performance testing was done according to the ANSI/AAMI EC57 standard. The
MIT-BIH, AHA, and NST databases were used to verify performance of the algorithm. The
algorithm performance testing summary is provided in the tables below:
QRS Detection Performance
Database QRS Sensitivity QRS Positive Predictivity
MIT-BIH 99.77% 99.81%
AHA 99.72% 99.82%
NST 96.59% 79.86%
AF Detection Performance
Database AF Sensitivity AF Specificity
MIT-BIH AF 93.43% 96.88%