|Intracranial haemorrhage (ICH)
can affect newborns of all gestational ages and often is clinically ‘silent’.
Germinal matrix haemorrhage and intraventricular haemorrhage (GM-IVH) is most
common in the premature population.
Estimates of frequency have changed over the last 20 years. Currently, large
series report a 15% prevalence in infants <32 weeks.
National Women's data for the period
2001-2003 indicates an incidence of 10.0% for GM-IVH in infants<32
weeks. Those most at risk were infants <28 weeks gestation.
Grade 3 and 4 GM-IVH was seen in 2.9% of infants<32 weeks, with a
higher incidence (15.5%) in infants <26 weeks gestation.
The incidence of periventricular
leukomalacia (PVLM) in infants <32 weeks at National Women's over the
same period of time was 1%.
screening for GM-IVH is performed in infants <30 weeks or <1250g at