Kardiotokographischer Nachweis einer fetalen Gefährdung mit einem CTG-Score

Methodology and Clinical Value of Transcutaneous Blood Gas Measurements in the Fetus

“…The maximal drift which was evaluated by means of a calibration gas was 2 %. The results of the tcPco -measurements were entered on the enquiry form together with the findings of the vaginal examination, the result of the concurrent fetal blood analysis, the result of the evaluation of the retrograde cardiotocogram (Hammacher-Score) and the indication for fetal blood analysis (1). Data were fed into a Cyber 70 (Control Data) and evaluated with the Statistic Package for Social Science (SPSS) of Northwestern University.…”

Clinical experience on tcPco2during labor

“…In order to evaluate the relation between fetal acidity, fetal heart rate pattern and tcPco2; normal, prepathologic and pathologic results of either method were compared and the contigency coefficient according to Pearson was calculated. For this evaluation a retrograde cardiotocogram of the 30 preceeding minutes was analyzed by means of the HAMMACHER score [1]. Furthermore, the mean value of the tcPco2 during normal, prepathologic and pathologic heart rate patterns was calculated.…”

“…While the number of fetuses endangered by hypoxia has been reduced to a large extend after the introduction of fetal blood sampling and cardiotocography both techniques have shortcomings [1,2,6,8]. The cardiotocography is a reliable screening technique as the occurence of fetal hypoxia is in most cases indicated by the heart rate pattern.…”

Microprocessor-based long term cardiorespirography. II. Status evaluation in term and premature newborns

“…2. HAMMACHER criteria [10] (Fig. 1): A. Oscillation amplitude: saltatory (SALT), undulatory (UD), limited undulatory (LIM.…”