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Large for gestational age (Aetiology (Metabolic Infant of mother with…
Large for
gestational age
Definition
BW >90th centile
for gestational age
Aetiology
Metabolic
Infant of mother with DM
Foetal hyperinsulinism
Pancreatic cell hyperplasia
Developmental
Hydrops foetalis
Idiopathic
Constitutionally large parents*
Genetic
Beckwith-Wiedermann syndrome (rare)
Diagnosis
Examination
Baby measurements
Head, length and abdo large
Investigations
Bedside
Observations
BM (hypoglycaemia)
History
PGH
Known conditions, menses, contraception,
STIs, smears
PMH
Chronic conditions e.g. DM
Genetic conditions
POH
Gravity/parity, deliveries,
gestation, BWs, complications
DH
Current meds, allergies
Current pregnancy
Scans/bloods, foetal movements,
complications, delivery
FH
LGA babies, congenital disorders
SH
Smoking, alcohol, BMI,
social support
Management
Conservative
Obstetric management in labour
Identify cause of LGA
Monitor and prevent hypoglycaemia
Prognosis
Generally very good
Complications
Metabolic
Hypoglycaemia (mother with DM)
Birth injury
Shoulder dystocia
Nerve palsies (e.g. brachial plexus)
fractures