Small for gestational age
Small for gestational age (SGA)
Small for gestational age (SGA) (/sɪˈmɑːl fɔːr ˌdʒɛstəˈreɪʃənəl eɪdʒ/), is a term used to refer to a fetus or newborn that is smaller in size than the usual for the gestational age.
Etymology
The term "Small for gestational age" is derived from the English language. "Small" comes from the Old English smæl, meaning slender or thin. "Gestational" is derived from the Latin gestare meaning to carry or bear. "Age" comes from the Old French aage, which is derived from the Latin aetas meaning a lifetime or age.
Definition
SGA is typically defined as a weight below the 10th percentile for the gestational age. This means that the baby weighs less than 90% of all other babies of the same gestational age.
Causes
There are several potential causes of SGA, including maternal factors such as poor nutrition, smoking during pregnancy, and infections, as well as fetal factors such as genetic disorders and congenital anomalies.
Related Terms
- Intrauterine growth restriction (IUGR): This is a condition where a baby's growth slows or ceases when it is in the womb.
- Low birth weight (LBW): This is a term used when the newborn weighs less than 2,500 grams, regardless of the gestational age.
- Premature birth: This is when a baby is born before 37 weeks of gestation.
See Also
External links
- Medical encyclopedia article on Small for gestational age
- Wikipedia's article - Small for gestational age
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