Method and system for detection of cardiac arrhythmia

Details Method and system for detection of cardiac arrhythmia Method and system for detection of cardiac arrhythmia

2006-10-10

2006-10-10

Pezzuto, Robert E. (Department: 3766)

Surgery

Diagnostic testing

Cardiovascular

C600S521000

Reexamination Certificate

active

07120485

ABSTRACT:
There are many different serious cardiac arrhythmias. The present invention uses measurements of RR intervals (interbeat intervals) to detect, in particular but not exclusively, atrial fibrillation of a patient. Atrial fibrilation is a serious ailment in which the heartbeat is generally rapid and irregular. Probability density histograms of ΔRRs (difference between two successive RR intervals) collected during atrial fibrillation of a plurality of subjects are used as a template for the detection of atrial fibrillation. In one implementation, there are 16 standard probability density ΔRRs histograms every 50 ms of mean RR interval of a certain number of beats, where the mean RR interval ranges from 350 ms to 1149 ms. Similarity between the standard probability density histograms and a test density probability histogram of ΔRRs of a patient is estimated by the Kolmogorov-Smirnov test. If the test density histogram is not significantly different from the standard density histogram, atrial fibrillation is detected.

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