A subspecialty of obstetrics
concerned with the care of the
mother and fetus at higher-than-normal risk for
complications. Since the
perinatal period, depending on the definition, starts at
the 20th to 28th
week
of gestation and ends 1 to 4 weeks after birth,
perinatology logically could
be an obstetrical and pediatric subspecialty but, in
practice, it is part of
obstetrics. The comparable area of pediatrics is
neonatology. A high-risk
baby
might be cared for by a perinatologist before birth and by
a neonatologist
after birth. The word "perinatology" is a linguistic
sandwich of the Greek
"peri-" meaning "around or about", "natal" from the Latin
"natus" meaning
"born" and "ology" from the Greek "logos" meaning "treatise
or study of."
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