Pediatric emergency medicine trisk 2489 2489
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immediately identified on the scalp. Figure 96.18 shows a scalp electrode site
that has been infected with HSV.
Size. The measured occipitofrontal head circumference should be plotted on
the standard CDC full-term growth curve (Link to CDC website for all growth
curves: ). For preterm
infants (<37 weeks), the corrected gestational age (CGA = gestational age at birth
+ postnatal age) should be used to adjust head circumference when using CDC
standard curves. Adjustment is continued until 24 to 36 months of chronologic
age. Alternatively, preterm growth curves such as the Fenton curve may be used
(Link
to
the
Fenton
Preterm
Growth
Chart
). Head circumference measurement at
birth and at initial hospital discharge may vary considerably after 1 week due to
subsidence of edema, water loss from the intracranial structures and unmolding of
sutures. Accurate measures can be obtained after 1 week and should be followed
serially by the pediatrician. Increase in head circumference is normal after 14
days.
