IUGR Flashcards
What is small for gestational age?
EFW/ Abdominal circumference <10th centile (severe = <3rd centile)
What is intrauterine growth restriction?
- <2500g or <10th centile
- Foetus unable to achieve genetically determined potential size due to a pathophysiological process
What are some intrinsic maternal risk factors for IUGR?
- PIH/PET
- Congenital heart disease
- Diabetes
- Extremes of age
What are some intrinsic foetal risk factors for IUGR?
- Multiple gestation
- Chromosomal abnormality
- Oligohydramnios
- Placental abruption
- Placenta praevia
- Chorioamnionitis
What are some extrinsic risk factors for IUGR?
- Nutritional imbalance
- Hazardous substance exposure
- Smoking/drugs/alcohol
- DV
What are the 2 types of IUGR?
Symmetrical and Asymmetrical
Describe symmetrical IUGR
- Begins in 1st trimester
- Interruption of cell division
- Baby is proportionally small
- Caused by both intrinsic and extrinsic factors
- Usually congenital infection or genetic disorder
What are some of the risks associated with symmetrical IUGR?
- Stillbirth
- Chromosomal abnormality
- Infection
- Brain damage
- Short stature
Describe asymmetrical IUGR
- Begins in 3rd trimester
- Interruption of cell growth
- Head appears larger than body
- Caused by extrinsic factors only
- Usually placental insufficiency
What are some of the risks associated with asymmetrical IUGR?
- Stillbirth
- Hypoglycaemia
- NEC
- Prematurity
- Oligohydramnios
What is a Doppler used for?
Looking at blood circulation between baby, uterus and placenta
What is normal to see on the Doppler between 24-30/40?
Absent End-Diastolic Flow (EDF)
What determines the decision for delivery of an IUGR baby between 30-34/40?
- Amniotic fluid
- Movements
- CTG
- Doppler
What does an abnormal doppler indicate after 34/40?
Severe feto-placental pathology
What is low birth weight?
<2500g
