Fractal Analysis and Hurst Parameter for Intrapartum Fetal Heart Rate Variability Analysis: A Versatile Alternative to Frequency Bands and LF/HF Ratio.

ABSTRACT: BACKGROUND:The fetal heart rate (FHR) is commonly monitored during labor to detect early fetal acidosis. FHR variability is traditionally investigated using Fourier transform, often with adult predefined frequency band powers and the corresponding LF/HF ratio. However, fetal conditions differ from adults and modify spectrum repartition along frequencies. AIMS:This study questions the arbitrariness definition and relevance of the frequency band splitting procedure, and thus of the calculation of the underlying LF/HF ratio, as efficient tools for characterizing intrapartum FHR variability. STUDY DESIGN:The last 30 minutes before delivery of the intrapartum FHR were analyzed. SUBJECTS:Case-control study. A total of 45 singletons divided into two groups based on umbilical cord arterial pH: the

SUBMITTER: Doret M 

PROVIDER: S-EPMC4556442 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature