Beziehungen kardiotokographischer Parameter zum fetalen sowie materno-fetalen S�ure-Basen-Haushalt in der Er�ffnungs- und Austreibungsperiode

Four patterns of fetal heart frequency with normocardia, two with tachycardia and three with bradycardia are described during the expulsion period. The most frequent patterns are normocardia with decelerations (48%), normocardia with decelerations and final bradycardia (21.1%) and basal bradycardia with decelerations (13.5%). The frequency of acidosis (pH of the umbilical artery less than or equal to 7,200) of these three patterns amounts to 8.3, 24.1 respectively 26.7%. The mean values of pHUA of normocardia with decelerations and final bradycardia, bradycardia, bradycardia with decelerations, tachycardia with decelerations and final bradycardia with prepathologic respectively pathologic Scores (Hammacher's Score, greater than or equal to five points) range from preacidosis to acidosis. Scoring of cardiotocograms seems to be of greater clinical significance than the measurement of deceleration areas.

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Fetale Herzfrequenzmuster der Austreibungs- und Preßperiode — typische Muster, Häufigkeit, Azidoserisiko und Befundung

Schlotter

Jäger

Wößner

et al. 1979

Arch. Gynecol.

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Sensitivity and specificity of intrapartum computerised FIGO criteria for cardiotocography and fetal scalp pH during labour: multicentre, observational study

Schiermeier

Steinburg

Thieme

et al. 2008

BJOG

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Objective To identify sensitivity and specificity of computerised cardiotocography (CTG) analysis for fetal acidosis during delivery. Design Retrospective observational study. Setting Tertiary referral labour ward, Technical University München (TUM) and University Witten/Herdecke (UWH). Population All deliveries, which had at least one fetal scalp pH measurement and electronically saved CTG traces, between 2000 and 2002 (TUM) and between 2004 and 2005 (UWH). Method Correlation analysis of fetal scalp pH values and computerised International Federation of Obstetrics and Gynecology (FIGO) classification using ‘CTG Online®’ program of digitally saved CTG traces. Main outcome measures Fetal scalp pH values, FIGO parameter (baseline, variability, acceleration and deceleration) using computerised analysis. Results Both collectives showed a high sensitivity (95.0%) for computerised FIGO classification ‘suspect’ and ‘pathological’, together with a low specificity (21.8%) for fetal acidosis. The most sensitive single FIGO parameter was deceleration. Very low sensitivity (<50%) was shown for the parameters variability and acceleration. Conclusions Computerised CTG analysis is highly sensitive for fetal acidosis and can be used as an objective adjunctive criterion during delivery. Further CTG data are needed to adjust and optimise each FIGO parameter and increase sensitivity and specificity.

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Beziehungen kardiotokographischer Parameter zum fetalen sowie materno-fetalen S�ure-Basen-Haushalt in der Er�ffnungs- und Austreibungsperiode

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Fetale Herzfrequenzmuster der Austreibungs- und Preßperiode — typische Muster, Häufigkeit, Azidoserisiko und Befundung

Fetale Herzfrequenzmuster der Austreibungs- und Preßperiode — typische Muster, Häufigkeit, Azidoserisiko und Befundung

Sensitivity and specificity of intrapartum computerised FIGO criteria for cardiotocography and fetal scalp pH during labour: multicentre, observational study

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