title: A comparative study of usefulness of quantitative parameters in the description of cardiotocogram records.
abstract: This study was an attempt to choose the optimized set of the features obtained from cardiotocogram records, which could explain in the best way the variability of foetal acid-base status parameters at labour. We prepared a package of the procedures in FORTRAN language which provides the possibilities for automatic detection and recognition of the long-term variability such as accelerations and decelerations and assessing some parameters connected with short-term variability (among other things oscillation bandwidth and number of baseline crossings). The acquired variables were subjected to multivariate statistical analysis to estimate the predictive power of a particular parameter. We used the described method to predict the variation of the foetal scalp blood pH and base deficit. This let us construct a set of variables which explains the maximal part of the variability of gasometric parameters. It affords possibilities for the estimation of the relative power of a particular component calculated from the cardiotocogram pattern. We obtain 41.7% of the explained variance for pH and 38.3% for base deficit.
authors: Laboratory of Computer Science and Statistics Medical Academy, Poznań, Poland.
authors: J A
authors: JA
authors: Moczko
authors: G
authors: G
authors: Breborowicz
authors: Z
authors: Z
authors: Słomko
mesh_terms: D005260:Female; D005312:Fetal Blood / Q000378:metabolism; D005323:Fetal Monitoring; D006340:Heart Rate, Fetal; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011247:Pregnancy; D012815:Signal Processing, Computer-Assisted; D014590:Uterine Contraction