title: Reprint of 'A nonlinear parameterization of multivariate electrohysterographical signals'.
abstract: Electrohysterography is a technique which measures a bioelectrical activity of a uterus. This paper presents an application of a nonlinear parameterization of multivariate electrohysterographical signals for a uterine activity assessment to improve unsatisfactory a labor prediction accuracy by methods published in literature. A multivariate sample entropy used for differentiated 4-channel electrohysterographical signals, general Spearman's correlation and a combined index being the sum of them, were tested. These nonlinear measures use joint information contained in a multivariate signal. The results confirm that the combined index provides the best assessment of uterine contractions: 87% sensitivity and 50% specificity of labor prediction in the studied data. These results should be verified in a prospective study.
authors.affiliation: Institute of Radioelectronics, Warsaw University of Technology, Nowowiejska 15/19 00-665 Warsaw, Poland. Electronic address: d.radomski@ire.pw.edu.pl.
authors.forename: Dariusz S
authors.initials: DS
authors.lastname: Radomski
mesh_terms: D016022:Case-Control Studies; D004576:Electromyography / Q000295:instrumentation / Q000379:methods; D005260:Female; D006801:Humans; D007745:Labor Onset / Q000502:physiology*; D011247:Pregnancy / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014590:Uterine Contraction / Q000502:physiology*; D014599:Uterus / Q000502:physiology*
keywords: Electrohysterography; Multivariate sample entropy; Nonlinear signal analysis