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Journal of Perinatal Medicine

Official Journal of the World Association of Perinatal Medicine

Editor-in-Chief: Dudenhausen, MD, FRCOG, Joachim W.

Editorial Board: / Bancalari, Eduardo / Greenough, Anne / Genc, Mehmet R. / Chervenak, Frank A. / Chappelle, Joseph / Bergmann, Renate L. / Bernardes, J.F. / Bevilacqua, G. / Blickstein, Isaac / Cabero Roura, Luis / Carbonell-Estrany, Xavier / Carrera, Jose M. / D`Addario, Vincenzo / D'Alton, MD, Mary E. / Dimitrou, G. / Grunebaum, Amos / Hentschel, Roland / Köpcke, W. / Kawabata, Ichiro / Keirse, Marc J.N.C. / Kurjak M.D., Asim / Lee, Ben H. / Levene, Malcolm / Lockwood, Charles J. / Marsal, Karel / Makatsariya, Alexander / Nishida, Hiroshi / Papp, Zoltán / Pejaver, Ranjan Kumar / Pooh, Ritsuko K. / Reiss, Irwin / Romero, Roberto / Saugstad, Ola D. / Schenker, Joseph G. / Sen, Cihat / Seri, Istvan / Vetter, Klaus / Winn, Hung N. / Young, Bruce K. / Zimmermann, Roland

9 Issues per year


IMPACT FACTOR 2016: 1.577
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Online
ISSN
1619-3997
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Volume 37, Issue 2

Issues

Sex differences in linear and complex fetal heart rate dynamics of normal and acidemic fetuses in the minutes preceding delivery

João Bernardes
  • 1Departamentos de Ginecologia e Obstetrícia, Faculdade de Medicina da Universidade do Porto, Hospital de S. João, Porto and Instituto Nacional de Engenharia Biomédica (INEB), Porto, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Hernâni Gonçalves
  • 2Departamento de Matemática Aplicada, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Diogo Ayres-de-Campos
  • 3Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina da Universidade do Porto, Porto and Hospital de S. João, Porto, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Ana Paula Rocha
  • 4Departamento de Matemática Aplicada, Faculdade de Ciências, Universidade do Porto and Centro de Matemática da Universidade do Porto, Porto, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2008-10-28 | DOI: https://doi.org/10.1515/JPM.2009.024

Abstract

Aim: To assess linear and complex heart rate dynamics in relation to fetal gender in normal and acidemic fetuses during the minutes preceding delivery.

Methods: Linear and non-linear fetal heart rate indices, namely mean FHR, long-term irregularity index, short-term variability, low and high frequency spectral indices, approximate and sample entropy, were assessed in 36 female and 30 male fetuses, adjusted for gestational age and weight, during the minutes preceding delivery. Analysis was performed in the initial and final minutes of each tracing in fetuses with umbilical artery blood pH at delivery ≥7.20, 7.11–7.19 and ≤7.10.

Results: Progression of labor was associated with a significant decrease in non-linear indices and an increase in almost all linear indices, both in female and male fetuses, but changes were more marked in female fetuses. Non-acidemic females showed higher mean FHR in the final minutes of labor, compared with males. Acidemic females had higher linear indices when compared to similar male fetuses.

Conclusions: During the minutes preceding delivery, female fetuses express higher linear indices than male fetuses, suggesting greater activation of the autonomic nervous system, while maintaining similar complexity indices, which suggests different reaction and adaptation capabilities to stress and distress.

Keywords: Acidemic fetuses; entropy and spectral analysis; fetal heart; intrapartum

About the article

Corresponding author: João Bernardes, Professor, Chairman Faculdade de Medicina da Universidade do Porto Ginecologia e Obstetrícia Al. Hernani Monteiro Porto, 4200 Portugal Tel.: +351 225 513 605 Fax: +351 225 513 601 ;


Received: 2008-04-30

Revised: 2008-07-25

Accepted: 2008-08-15

Published Online: 2008-10-28

Published Online: 2008-10-28

Published in Print: 2009-03-01


Citation Information: Journal of Perinatal Medicine, Volume 37, Issue 2, Pages 168–176, ISSN (Online) 1619-3997, ISSN (Print) 0300-5577, DOI: https://doi.org/10.1515/JPM.2009.024.

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Hernâni Gonçalves, Diana Fernandes, Paula Pinto, Diogo Ayres-de-Campos, and João Bernardes
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BMC Pregnancy and Childbirth, 2014, Volume 14, Number 1
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J.A. DiPietro and K.M. Voegtline
Neuroscience, 2017, Volume 342, Page 4
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Monographs of the Society for Research in Child Development, 2015, Volume 80, Number 3, Page 95
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Hernâni Gonçalves, João Bernardes, and Diogo Ayres-de-Campos
Early Human Development, 2013, Volume 89, Number 6, Page 431
[7]
J. Spilka, V. Chudáček, M. Koucký, L. Lhotská, M. Huptych, P. Janků, G. Georgoulas, and C. Stylios
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Current Opinion in Obstetrics and Gynecology, 2010, Volume 22, Number 2, Page 104

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