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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

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1619-3997
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Volume 35, Issue 6 (Dec 2007)

Issues

Obstetrical factors for death and brain injury among extremely-low-birth-weight infants

Tatsuya Fukami
  • 1Department of Obstetrics and Gynecology, School of Medicine, Fukuoka University, Fukuoka, Japan
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/ Toshiyuki Yoshizato
  • 2Center for Maternal, Fetal and Neonatal Medicine, Fukuoka University Hospital, Fukuoka, Japan
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/ Toshiko Mori
  • 3Center for Maternal, Fetal and Neonatal Medicine, Fukuoka University Hospital, Fukuoka, Japan
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/ Ko Yukitake
  • 4Center for Maternal, Fetal and Neonatal Medicine, Fukuoka University Hospital, Fukuoka, Japan
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/ Yoshihiro Miyake / Tatsuhiko Kawarabayashi
  • 6Department of Obstetrics and Gynecology, School of Medicine, Fukuoka University, Fukuoka, Japan
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Published Online: 2007-12-05 | DOI: https://doi.org/10.1515/JPM.2007.111

Abstract

Objective: To examine the obstetrical risk factors for death and brain injury among extremely-low-birth-weight (ELBW) infants (birth weight <1000 g).

Study design: Study subjects were 121 ELBW infants born at a single tertiary perinatal center. Death among ELBW infants was considered to have occurred when subjects died within their corrected age of 40 weeks. In the sub-analysis of the 91 ELBW infants who survived their corrected age of 40 weeks, brain injury was defined as present when criteria based on ultrasound and/or MRI were substantiated.

Results: A birth weight of <800 g [adjusted odds ratio (OR), 14.57; 95% confidence interval (CI), 4.72–56.98], a younger gestational age of <26 weeks (adjusted OR, 4.64; 95% CI, 1.60–14.90), and a low Apgar score of <5 (adjusted OR, 3.88; 95% CI, 1.32–12.45) were significantly associated with death among ELBW infants. A maternal age of 30 years or older (adjusted OR, 3.71; 95% CI, 1.19–13.35) was only associated with brain injury among surviving ELBW infants.

Conclusion: Obstetrical care should be aimed at preventing or predicting premature delivery especially at <26 weeks of gestation.

Keywords: Brain injury; extremely-low-birth-weight infants; obstetrical risk factors

About the article

Corresponding author: Toshiyuki Yoshizato, MD, PhD Assistant professor Center for Maternal, Fetal and Neonatal Medicine Fukuoka University Hospital 7-45-1 Nanakuma Jonan-ku Fukuoka 814-0180 Japan Tel.: +81-92-801-1011 ext.3505 Fax: +81-92-865-4114


Received: 2006-09-14

Revised: 2007-07-09

Accepted: 2007-09-20

Published Online: 2007-12-05

Published in Print: 2007-12-01


Citation Information: Journal of Perinatal Medicine, ISSN (Online) 16193997, ISSN (Print) 03005577, DOI: https://doi.org/10.1515/JPM.2007.111.

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