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Role of cardiotocography.

The cardiotocograph (CTG) is a composite record of fetal heart rate and uterine activity. During pregnancy, the CTG is a diagnostic test of fetal condition whenever acute or chronic complications arise. In labour, the CTG provides a continuous indication of fetal response to uterine contractions and interventions.

Cardiotocography↗
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[Computer-assisted cardiotocography analysis within the scope of continuous electronic labor monitoring with simultaneous use of noninvasive and invasive methods of registration].

In frame of a simultaneously study with noninvasive and invasive registration technic by application of 2 fetal monitors with following computer aided CTG-analysis at 22 patients we found in relation to the quantitative CTG-parameters DF (fetal condition), D (dip area), BI (bradycardia index) as well as BR (bradycardia residuelle) in part distinct differences for the range of distribution in spite of missing statistical significance (p less than 0.05) which point to insecurity in trigger signals for the noninvasive method. As exceptionally dangerous turned out to be false trigger signals in range of medium-term heart rate changes in attendance to auto-correlation US-DOPPLER-technic. The noninvasive registration of labour pains impressed forcibly for some time about longer CTG-phases to be unsuitable for the exactly judgment of uterine activity (Montevideo-unit). In conclusion the noninvasive method in supervision of labour should be considered more critical than earlier particular under forensic points of view.

Cardiotocography↗