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Macrosomia is the only reliable predictor of shoulder dystocia in babies weighing 3.5 kg or more

Mansor A, Arumugam K, Omar SZ

Eur J Obstet Gynecol Reprod Biol, 2010 Mar;149(1):44-6.
PMID: 20042263 DOI: 10.1016/j.ejogrb.2009.12.003

To determine if shoulder dystocia can be predicted in babies born weighing 3.5 kg or more.

Matched MeSH terms: Fetal Macrosomia/epidemiology*
Factors influencing macrosomia in pregnant women in a tertiary care hospital in Malaysia

Yadav H, Lee N

J Obstet Gynaecol Res, 2014 Feb;40(2):439-44.
PMID: 24147966 DOI: 10.1111/jog.12209

To identify the risk factors influencing the development of macrosomia among pregnant women and to develop a regression model to predict macrosomia.

Matched MeSH terms: Fetal Macrosomia/epidemiology*
Delivery of macrosomic babies: management and outcomes of 330 cases

Lim JH, Tan BC, Jammal AE, Symonds EM

J Obstet Gynaecol, 2002 Jul;22(4):370-4.
PMID: 12521456

This study reviews the deliveries of macrosomic babies and their outcomes. A total of 330 macrosomic (birth weight > or =4 kg) cases were studied retrospectively from July 1999 to December 1999 in the Maternity Hospital of Kuala Lumpur. The variables studied included induction of labour, mode of delivery and the incidence of maternal and perinatal complications. Three hundred and thirty macrosomic infants were delivered during the period of study. Vaginal delivery was achived in 56% of the study cases. The percentage of vaginal delivery was higher among those who had induction of labour (63%) compared to the group without induction of labour (50%). Vaginal delivery was planned in 267 mothers and of these 69% achieved vaginal delivery. Twelve per cent of the macrosomic infants were delivered by elective caesarean section. Shoulder dystocia occurred in 4.9% of vaginal deliveries. Eighty-eight neonates were admitted to the special care nursery unit and 57% of these infants were delivered by elective caesarean section. Perineal trauma occurred in 26% of vaginal deliveries. Post-partum haemorrhage occurred in 32% of caesarean deliveries compared to 4% in vaginal deliveries. Two cases of stillbirths were documented but no maternal death occurred during the period of study. Vaginal delivery is the most frequent mode of delivery for a fetus weighing in excess of 4 kg and vaginal delivery should be attempted in the absence of contraindications, because vaginal delivery has less maternal morbidity compared to caesarean delivery. However, shoulder dystocia remains a significant complication of vaginal delivery for macrosomic fetuses.

Matched MeSH terms: Fetal Macrosomia/epidemiology*
Maternal lipids are associated with newborn adiposity, independent of GDM status, obesity and insulin resistance: a prospective observational cohort study

Samsuddin S, Arumugam PA, Md Amin MS, Yahya A, Musa N, Lim LL, et al.

BJOG, 2020 03;127(4):490-499.
PMID: 31778255 DOI: 10.1111/1471-0528.16031

OBJECTIVE: To determine the association between maternal lipaemia and neonatal anthropometrics in Malaysian mother-offspring pairs.
DESIGN: Prospective observational cohort study.
SETTING: Single tertiary multidisciplinary antenatal clinic in Malaysia.
POPULATION: A total of 507 mothers: 145 with gestational diabetes mellitus (GDM); 94 who were obese with normal glucose tolerance (NGT) (pre-gravid body mass index, BMI ≥ 27.5 kg/m2 ), and 268 who were not obese with NGT.
METHODS: Maternal demographic, anthropometric, and clinical data were collected during an interview/examination using a structured questionnaire. Blood was drawn for insulin, C-peptide, triglyceride (Tg), and non-esterified fatty acid (NEFA) during the 75-g 2-hour oral glucose tolerance test (OGTT) screening, and again at 36 weeks of gestation. At birth, neonatal anthropometrics were assessed and data such as gestational weight gain (GWG) were extracted from the records.
MAIN OUTCOME MEASURES: Macrosomia, large-for-gestational-age (LGA) status, cohort-specific birthweight (BW), neonatal fat mass (NFM), and sum of skinfold thickness (SSFT) > 90th centile.
RESULTS: Fasting Tg > 95th centile (3.6 mmol/L) at screening for OGTT was independently associated with LGA (adjusted odds ratio, aOR 10.82, 95% CI 1.26-93.37) after adjustment for maternal glucose, pre-gravid BMI, and insulin sensitivity. Fasting glucose was independently associated with a birthweight ratio (BWR) of >90th centile (aOR 2.06, 95% CI 1.17-3.64), but not with LGA status, in this well-treated GDM cohort with pre-delivery HbA1c of 5.27%. In all, 45% of mothers had a pre-gravid BMI of <23 kg/m2 and 61% had a pre-gravid BMI of ≤ 25 kg/m2 , yet a GWG of >10 kg was associated with a 4.25-fold risk (95% CI 1.71-10.53) of BWR > 90th centile.
CONCLUSION: Maternal lipaemia and GWG at a low threshold (>10 kg) adversely impact neonatal adiposity in Asian offspring, independent of glucose, insulin resistance and pre-gravid BMI. These may therefore be important modifiable metabolic targets in pregnancy.
TWEETABLE ABSTRACT: Maternal lipids are associated with adiposity in Asian babies independently of pre-gravid BMI, GDM status, and insulin resistance.

Matched MeSH terms: Fetal Macrosomia/epidemiology
The 50-g glucose challenge test and pregnancy outcome in a multiethnic Asian population at high risk for gestational diabetes

Tan PC, Ling LP, Omar SZ

Int J Gynaecol Obstet, 2009 Apr;105(1):50-5.
PMID: 19154997 DOI: 10.1016/j.ijgo.2008.11.038

OBJECTIVE:
To evaluate the 50-g glucose challenge test (GCT) on pregnancy outcome in a multiethnic Asian population at high risk for gestational diabetes (GDM).

METHODS:
GCT was positive if the 1-hour plasma glucose level was >or=7.2 mmol/L. GDM was diagnosed by a 75-g glucose tolerance test using WHO (1999) criteria. Of the 1368 women enrolled in the study, 892 were GCT negative, 308 were GCT false-positive, and 168 had GDM. Pregnancy outcomes were extracted from hospital records. Multivariable logistic regression analysis was performed with GCT negative women as the reference group.

RESULTS:
GCT false-positive status was associated with preterm birth (adjusted odds ratio [AOR] 2.1; 95% CI, 1.2-3.7) and postpartum hemorrhage (AOR 1.7; 95% CI, 1.0-2.7). GDM was associated with labor induction (AOR 5.0; 95% CI, 3.3-7.5), cesarean delivery (AOR 2.2; 95% CI, 1.6-3.2), postpartum hemorrhage (AOR 2.1; 95% CI, 1.2-3.7), and neonatal macrosomia (AOR 2.5; 95% CI, 1.0-6.0).

CONCLUSION:
GCT false-positive women had an increased likelihood of an adverse pregnancy outcome. The role and threshold of the GCT needs re-evaluation.

Matched MeSH terms: Fetal Macrosomia/epidemiology
Comparative study of two insulin regimes in pregnancy complicated by diabetes mellitus

Nor Azlin MI, Nor NA, Sufian SS, Mustafa N, Jamil MA, Kamaruddin NA

Acta Obstet Gynecol Scand, 2007;86(4):407-8.
PMID: 17486460
Matched MeSH terms: Fetal Macrosomia/epidemiology