I was first told that my aorta is slightly dilated at 4.0 cm. There is some variation in the way the term aneurysm is used. For the thoracic aorta, most agree that at a diameter of 4.0 cm it has reached a size that is considered an aneurysm. The word dilated refers to the enlargement of the aorta.
Called also neonate and newborn. premature infant (preterm infant) one born before a gestational age of 37 completed weeks (259 days). The duration of gestation is measured from the first day of the last menstrual period and is expressed in completed days or weeks.
Newborn Deaths. A newborn baby is called a neonate for the first 28 days of life. This first month is a relatively high risk period for babies. Death rates: The overall infant (<1 year) death rate is 0.706% or 1-in-141. This rate is higher in the first 28 days and reduces to 0.188% or 1-in-531 after the neonatal period.