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.
small-for-gestational-age infant a preterm, term, or postterm infant who is below the 10th percentile for gestational age in head circumference, body weight, or length. term infant one born at a gestational age of 37 to 42 completed weeks (259 to 293 completed days).very-low-birth-weight infant one that weighs less than 1000 grams at birth.ny neonate, regardless of birth weight, born after the end of the thirty-seventh and before the beginning of the forty-third week of gestation. Infants delivered at term usually measure from 48 to 53 cm from head to heel and weigh between 2700 and 4000 g.