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  • Title: [A new form of representation of foetal cardiotocograms (author's transl)].
    Author: Krause W, Michels W, Kunath H, Volkmer H.
    Journal: Z Geburtshilfe Perinatol; 1981 Feb; 185(1):20-6. PubMed ID: 7195115.
    Abstract:
    Based on a computerized analysis of CTG's we have developed a new graphical representation of fetal CTG's. The reproduction results from displays over 13 hours labor-progressing. A mathematical model is used. We have applied a discrimination function (DF) which is composed by 10 quantitative electronic parameters. Two fixed periods are compared. For mathematical and statistical evaluation the multivariate analysis of variance in connection with methods of dimension-reduction and discrimination was applied. A nonelementary discrimination function was taken into account. The value of the discrimination function was checked by means of postnatal data (pHNA and APGAR-score 5 minutes postnatal). The predictability "normal" pHNA - related to the computerized CTG- analysis - was exact in 80% (pHNA greater than or equal to 7,20). In 20% we found prepathological pHNA-values (pHNA:7,19-7,11). The predictability "prepathological" pHNA - related to the computerized CTG- analysis - was in 3,5% correlated with pathological pHNA-values (pHNA less than or equal to 7,10). Pathological pHNA - values may be almost ruled out by computerized CTG - analysis. Computerized "normal" CTG's were in 97% correlated with APGAR-scored values (5 minutes postnatal) > 7. Computerized "prepathological" or "pathological" CTG's were in 26% correlated with APGAR-score values (5 minutes postnatal) less than or equal to 7. The proposed computer-program is already used in this form in clinical practice.
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