In a very small number of pregnancies, the baby may not grow as well as in a normal pregnancy. This is called intrauterine growth restriction (IUGR) and the unborn baby will be described as being “small for gestational age” (SGA). IUGR is confirmed by ultrasound scanning. IUGR means that the baby is smaller than expected for the length of time that the woman has been pregnant. An unborn baby with IUGR should be carefully monitored during pregnancy and delivery, but will usually be healthy at birth.