1. Decrement of uterine myometrial burst duration as a correlate to active labor: a Hilbert phase approach.
- Author
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Govindan RB, Vairavan S, Furdea A, Murphy P, Preissl H, and Eswaran H
- Subjects
- Female, Humans, Reproducibility of Results, Sensitivity and Specificity, Statistics as Topic, Action Potentials physiology, Electromyography methods, Labor Onset physiology, Myometrium physiology, Pregnancy physiology, Uterine Contraction physiology
- Abstract
We propose a novel approach based on Hilbert phase to identify the burst in the uterine myometrial activity. We apply this approach to 24 serial magnetomyographic signals recorded from four pregnant women using a 151 SQUID array system. The bursts identified with this approach are evaluated for duration and are correlated with the gestational age. In all four subjects, we find a decrease in the duration of burst as the subject approaches active labor. As was shown in animal studies, this result indicates a faster conduction time between the muscle cells which activate a larger number of muscle units in a synchronous manner. more...
- Published
- 2010
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