About this Medicine article

Comparison of Fetal Heart Rate Variability by Symbolic Dynamics at the Third Trimester of Pregnancy and Low-risk Parturition by Cristian Iván Montalvo-Jaramillo; Adriana Cristina Pliego-Carrillo; Miguel Ángel Peña-Castillo; Juan Carlos Echeverría; Enrique Becerril-Villanueva; Lenin Pavón; Rodrigo Ayala-Yáñez; Ramón González-Camarena; Karsten Berg; Niels Wessel; Gustavo Pacheco-López; José Javier Reyes-Lagos is a Medicine article available to read on EtoBox.

Fetal heart rate variability (fHRV) is an essential source of information to monitor fetal well-being during pregnancy. This study aimed to apply a nonlinear approach, known as symbolic dynamics (SD), for comparing human fHRV in the third trimester of pregnancy during active fetal state (TT) and active labor at term (P). We performed a longitudinal, prospective, descriptive, and comparative study composed of 42 longitudinal recordings of 5-minutes of fetal heartbeat interval series. Recordings were collected from 21 low-risk, healthy, pregnant women attending the Maternal and Child Research Center (CIMIGen), Mexico City. We calculated relevant linear parameters of fHRV between TT and P stages, such as the percentage of differences between adjacent RR intervals >5 ms (PRR5, related to vagal modulations) and other SD parameters such as the percentage of no variations between three successive symbols (%0V, reflects sympathetic modulations) and the probability of low variability with a threshold of 4 ms (POLVAR4, associated with a low variability). We identified statistical differences for PRR5 between TT and P (37.13% [28.47–47.60%] vs. 28.84% [19.36–36.76%], p = 0.03), respectively.

Author

Cristian Iván Montalvo-Jaramillo; Adriana Cristina Pliego-Carrillo; Miguel Ángel Peña-Castillo; Juan Carlos Echeverría; Enrique Becerril-Villanueva; Lenin Pavón; Rodrigo Ayala-Yáñez; Ramón González-Camarena; Karsten Berg; Niels Wessel; Gustavo Pacheco-López; José Javier Reyes-Lagos

Published

2020

Language

EN

Field

Medicine (Physical Sciences)