Prepregnancy body mass index as an important predictor of perinatal outcomes in Japanese.
OBJECTIVE
The influence of maternal body mass index (BMI) before pregnancy and weight gain during pregnancy on perinatal outcomes in the Japanese population remains to be elucidated. Therefore, we estimated the risk of perinatal morbidity of the mother and infant with respect to maternal prepregnancy BMI and weight gain during pregnancy in Japanese.


RESULTS
In the obese before pregnancy group, the risks of cesarean delivery, preeclampsia, and gestational diabetes were significantly elevated compared with the normal group. In the underweight before pregnancy group, the risks of low birth weight infant and hospitalization of infant were elevated significantly.


CONCLUSIONS
However, weight gain during pregnancy did not show any significant influence on the perinatal outcomes of the mother or infant.
Murakami
Maki
M
Department of Obstetrics and Gynecology, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata-city, Yamagata 9909585, Japan. makim@med.id.yamagata-u.ac.jp
Ohmichi
Masahide
M
Takahashi
Tatsuya
T
Shibata
Akiko
A
Fukao
Akira
A
Morisaki
Nobuyuki
N
Kurachi
Hirohisa
H
D000293:Adolescent; D000328:Adult; D015992:Body Mass Index; D002585:Cesarean Section / Q000706:statistics & numerical data; D016640:Diabetes, Gestational / Q000453:epidemiology; D005260:Female; D005865:Gestational Age; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007564:Japan / Q000453:epidemiology; D009765:Obesity / Q000150:complications* / Q000453:epidemiology; D011225:Pre-Eclampsia / Q000453:epidemiology / Q000209:etiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D011256:Pregnancy Outcome / Q000453:epidemiology*; D047928:Premature Birth / Q000453:epidemiology; D012189:Retrospective Studies; D012307:Risk Factors; D013851:Thinness / Q000150:complications* / Q000453:epidemiology; D015430:Weight Gain / Q000502:physiology