Pregnancy outcomes for the SHAPES cohort
Outcomes | Definition |
Maternal outcomes | |
Gestational diabetes* | Fasting plasma glucose level of ≥5.6 mmol/L or 2 hour plasma glucose level of ≥7.8 mmol/L |
Gestational hypertension | Blood pressure≥140/90 mm Hg on two occasions at least 4 hours apart after 20 weeks’ gestation |
Pre-eclampsia | New onset of hypertension (>140 mm Hg systolic or >90 mm Hg diastolic) after 20 weeks of pregnancy with a new onset of proteinuria or/and maternal organ dysfunction or/and uteroplacental dysfunction. Early onset defined as onset of pre-eclampsia before 34 weeks gestation |
Induction of labour | Non-surgical treatment to induce the labour |
Caesarean section | Surgical delivery of baby (emergency or elective) |
Instrumental delivery | Assisted birth when forceps or a ventouse suction cup is applied |
Retained placenta | As reported in medical records |
Maternal infection | As reported in medical records |
Postpartum haemorrhage (PPH) | Third stage of labour and immediate postpartum period, measured in mL blood loss |
Maternal length of stay in hospital | From admission date for any stay resulting in delivery to date of discharge |
Infant outcomes | |
Fetal growth | Measured at second and third trimester scans, including: Second trimester scan: fetal head circumference; fetal abdominal circumference; fetal femur length; estimated fetal weight Hadlock Third trimester scan: abdominal circumference; femur length; estimated fetal weight Hadlock; umbilical artery PI; end diastolic flow; Amniotic Fluid Index |
Preterm birth | Birth before 37 weeks gestation |
Late-term birth | Pregnancy that extends over 41 weeks gestation |
Large for gestational age | Birth weight above the 90th centile for gestational age and sex on INTERGROWTH chart |
Small for gestational age | Birth weight below the 10th centile for gestational age and sex on INTERGROWTH chart46 |
Apgar score | 1 and 5 minutes |
Neonatal jaundice | As reported in medical records |
Neonatal respiratory distress (requiring resuscitation) | Any of the following: cords visualised meconium seen; cord visualised no meconium; facial air; facial oxygen; mucus extraction or suction; positive pressure by bag or mask; positive pressure by endotracheal tube |
Feeding method | First feed: artificial; breast mother; breast donor; breast and artificial; no feed given Feed method at discharge: breastfeeding or artificial feed or both breast and artificial |
Infant admission to specialist care | Admission to neonatal special care baby unit or intensive care unit, high-dependency care, transitional care; length of stay if admitted |
*Note this outcome can only be determined for those women who have had an oral glucose tolerance test.
SHAPES, Study of How Adiposity in Pregnancy has an Effect on outcomeS.