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[Biophysical methods in diagnosis of intrapartal fetal hypoxia]

2011, Ceská gynekologie / Ceská lékarská spolecnost J. Ev. Purkyne

Abstract

To evaluate validity of biophysical diagnostic methods of fetal hypoxia. A case-control study. Department of Gynecology and Obstetrics, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic. We divided the patients according to pH in umbilical artery (UA) < 7.15 into two groups: controls (n = 36), and studied (n = 31), retrospectively. We performed continuous simultaneous fetal monitoring with cardiotocography (CTG), fetal pulse oxymetry (IFPO), and ST segment analysis of fetal electrocardiogram (STAN). histograms, Kolmogorov-Smirnovov test, Mann-Whitney test, Spearman's rho; statistical significance: p < 0.05, Receiver Operating Characteristic curves, Area Under the Curve. The most frequent was intermediary CTG pattern (n = 32; 47.76%). Non-reassuring IFPO was in 22 cases (32.86%), and ST events were present in 4 cases (5.97%). CTG validity in prediction of pH in UA < 7.15: sensitivity 80.0%, specificity 50.0%, positive predictive value (PPV) 22.1...