Birthweight Centiles (birthweight + centile)

Distribution by Scientific Domains
Medical Sciences100%

Selected Abstracts

Tetralogy of Fallot: maternal and neonatal outcomes

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 3 2008
E Gelson
We performed a retrospective cohort study of 26 pregnancies in 16 women with repaired tetralogy of Fallot (rTOF) delivering at the Chelsea and Westminster Hospital and compared them with 104 controls. The rate of antenatal complications was significantly higher in the rTOF group (30 cf. 13%). Use of epidural anaesthesia was higher (67 cf. 25%) in the rTOF group compared with controls, and the length of the second stage was shorter in both spontaneous and assisted deliveries. However, the mode of delivery and neonatal outcomes were similar in both groups. Mean birthweight centile was lower in the tetralogy of Fallot group, 26 versus 58 in the control group (P = 0.000001, Wilcoxon rank sum test). All women whose babies were <10th centile weight for gestational age had moderate to severe pulmonary regurgitation. [source]

Customised birthweight centiles are useful for identifying small-for-gestational-age babies in women with type 2 diabetes

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 2 2009
Janet A. ROWAN
Background: Customised birthweight centiles identify small-for-gestational-age (SGA) babies at increased risk of morbidity more accurately than population centiles, but they have not been validated in obese populations. Aims: To compare the rates of SGA by population and customised birthweight centiles in babies of women with type 2 diabetes and examine perinatal outcomes in customised SGA infants. Methods: Data were from a previous retrospective cohort study detailing pregnancy outcomes in 212 women with type 2 diabetes. Customised and population birthweight centiles were calculated; pregnancy details and neonatal outcomes were compared between groups that delivered infants who were SGA (birthweight < 10th customised centile) and appropriate weight for gestational age (AGA) (birthweight 10,90th customised centile). Results: Fifteen (7%) babies were SGA by population centiles and 32 (15%) by customised centiles. Two babies of Indian women were reclassified from SGA to AGA by customised centiles. Nineteen babies were reclassified from AGA to SGA by customised centiles; of these, 15 (79%) were born to Polynesian women, five (26%) were born less than 32 weeks and two (11%) were stillborn. Customised SGA infants, compared with AGA infants, were more likely to be born preterm (19 (59%) vs 20 (16%), P < 0.001) and more likely to be stillborn (4 (13%) vs 0 P = 0.001). After excluding still births, admission to the neonatal unit was also more common (19 of 28 (68%) vs 43 of 127 (34%), P < 0.001). Conclusions: In our population more babies were classified as SGA by customised compared with population centiles. These customised SGA babies have high rates of morbidity. [source]

A customised birthweight centile calculator developed for an Australian population

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 2 2007
Max MONGELLI
Abstract Customised percentiles improve the differentiation between constitutional and pathological smallness of the fetus and the neonate. We studied data from 12 420 pregnancies in Sydney to develop Australian coefficients for customised fetal growth and birthweight centiles. Significant coefficients were derived for maternal height, weight, parity and ethnic origin as well as gestational age and the baby's gender. Standardised comparison with results from previous reports from England and New Zealand shows marked similarities in the predicted birthweight at term, confirming international applicability of the concept of adjusting for constitutional factors when calculating the growth potential of an individual fetus. [source]

Pregnancy-induced hypertension and infant mortality: roles of birthweight centiles and gestational age

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 1 2007
XK Chen
Objective, To assess the effect of pregnancy-induced hypertension (PIH) on infant mortality in different birthweight centiles (small for gestational age [SGA], appropriate for gestational age [AGA], and large for gestational age [LGA]) and gestational ages (early preterm, late preterm, and full term). Design, Retrospective cohort study. Setting, Linked birth and infant death data set of USA between 1995 and 2000. Population, A total of 17 464 560 eligible liveborn singleton births delivered after 20th gestational week. Methods, Multivariate logistic regression models were applied to evaluate the association between PIH and infant mortality, with adjustment of potential confounders stratified by birthweight centiles and gestational age. Main outcome measure, Infant death (0,364 days) and its three components: early neonatal death (0,6 days), late neonatal death (7,27 days), and postneonatal death (28,364 days). Results, PIH was associated with decreased risks of infant mortality, early neonatal mortality, and late neonatal mortality in both preterm and term SGA births, and PIH was associated with lower postneonatal mortality in preterm SGA births. PIH was associated with decreased risks of infant mortality, early neonatal mortality, late neonatal mortality and postneonatal mortality in preterm AGA births. Decreased risk of infant mortality and early neonatal mortality was associated with PIH in early preterm LGA births. Conclusions, The association between PIH and infant mortality varies depending on different birthweight centiles, gestational age, and age at death. PIH is associated with a decreased risk of infant mortality in SGA births, preterm AGA births, and early preterm LGA births. [source]