Наукові праці. Кафедра акушерства та гінекології № 3

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    Fuzzy Detection of Fetal Distress for Antenatal Monitoring in Pregnancy with Fetal Growth Restriction and Normal
    (IntechOpen, 2018-12-19) Lakhno, Igor; Guzmán-Velázquez, Bertha Patricia; Díaz-Méndez, José Alejandro
    Monitoring of fetal cardiac activity is a well-known approach to the assessment of fetal health. The fetal heart rate can be measured using conventional cardiotocography (CTG). However, this method does not provide the beat-to-beat variability of the fetal heart rate because of the averaging nature of the autocorrelation function that is used to estimate the heart rate from a set of heart beats enclosed in the autocorrelation function window. Therefore, CTG presents important limitations for fetal arrhythmia diagnosis. CTG has a high rate of false positives and poor inter- and intra-observer reliability, such that fetal status and the perinatal outcome cannot be predicted reliably. Non-invasive fetal electrocardiography (NI-FECG) is a promising low-cost and non-invasive continuous fetal monitoring alternative. However, there is little that has been published to date on the clinical usability of NI-FECG. The chapter will include data on the accurate diagnosing of fetal distress based on heart rate variability (HRV). A fuzzy logic inference system was designed based on a set of fetal descriptors selected from the HRV responses, as evident descriptors of fetal well-being, to increase the sensitivity and specificity of detection. This approach is found to be rather prospective for the subsequent clinical implementation.
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    HRV descriptors for fetal distress assessment in pregnancy with fetal growth restriction
    (CSREA Press, 2018-07-16) Guzmán-Velázquez, Bertha Patricia; Lakhno, Igor; Díaz-Méndez, Alejandro
    This paper focused on the fetal wellbeing assessment, through the selection of HRV descriptors as evident markers of fetal distress. The study of behavior in experiments with control groups of healthy pregnant women and pregnant women with fetal growth restriction allows obtaining quantitative descriptors that help assess the loss of fetal well-being. The results show that SI (Sp=1, Se=0.9882), and AMo (Sp=0.8118, Se=0.9882) are evident markers of fetal distress.