What is baby abdominal circumference?
Abdominal circumference (AC) is a measurement taken during a pregnancy ultrasound in order to gauge the circumference of the fetal abdomen. The AC gives an indication of whether the fetus is growing normally inside the uterus in relation to size and weight.
What is the normal abdominal circumference?
For your best health, your waist should be less than 40 inches around for men, and less than 35 inches for women, although it may vary depending on race or ethnicity.
What are average newborn measurements?
It’s the same as their height, but height is measured standing up, whereas length is measured while your baby is lying down. The average length at birth for a full-term baby is 19 to 20 inches (about 50 cm). But the range for most newborns is between 18 and 22 inches (45.7 to 60 cm).
What happens if abdominal circumference is more?
Fetuses with larger abdominal circumferences on antenatal ultrasounds are more likely to be macrosomic with birth weight >4000 grams (OR 2.496, p < 0.0001). Increasing fetal AC is associated with the later development of gestational diabetes (OR 2.343, p=0.0023) and polyhydramnios (OR 2.938, p=0.0003).
How accurate is abdominal circumference on ultrasound?
The abdominal circumference is not as accurate as the BPD and femur length for estimating gestational age. Instead, it is commonly used to determine proportionality with the head. A head-to-abdominal circumference ratio is used for this purpose.
How do you measure abdominal circumference?
Measuring-tape position for waist (abdominal) circumference in adults. To measure waist circumference, locate the upper hip bone and the top of the right iliac crest. Place a measuring tape in a horizontal plane around the abdomen at the level of the iliac crest.