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Abstract Objective: To evaluate the fetal oxygen saturation (FSaO2) monitoring method in the application of labor, and to analyze its diagnosis for predicting fetal acidosis, fetal distress and the clinical significance of the combined cardiac electronic surveillance. Method: Eighty women were divided into the observation group (cardiac monitoring inside and outside as well as FSaO2 monitoring) and control group (cardiac monitoring inside and outside). Apgar score and blood gas analysis of cord blood, sensitivity, specific, positive expected value, negative expected value and accuracy were evaluated after delivery. Results: There were significant differences in the prediction of acidosis, and the sensitivity, specificity, positive expected value, negative expected value, accuracy of the diagnosis of fetal distress between the experimental group and the control group (P < 0.01). Not more than 30% of FSaO2 level lasting for 5 min suggested a fetal acidosis, which affected the perinatal outcome. Conclusion: FSaO2 can reflect the fetal oxygenation and acid-base balance, and predict the acidosis and perinatal situation as well as diagnose fetal distress. Combined of cardiac electronic internal monitoring with external monitoring in labor could improve accuracy and specificity of monitoring.
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