What is the normal abdominal circumference of a fetus?

What is the normal abdominal circumference of a fetus?

An ultrasound examination shows a normal biparietal diameter and head circumference, although the abdominal circumference is 24.5 cm, which is at the 2.5th percentile. Estimated fetal weight is 1,465 g (3 lb, 4 oz), which places the infant in the 3rd percentile.

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 does a large fetal abdominal circumference mean?

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 fetal abdominal circumference?

Obstetric 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.

Why do babies have abdominal circumference?

Objective: The fetal abdominal circumference is the most sensitive ultrasound biometric measurement for predicting intrauterine growth restriction, which is associated with an increased risk of intrapartum fetal distress.

What is the meaning of abdominal circumference?

Abdominal girth is the measurement of the distance around the abdomen at a specific point. Measurement is most often made at the level of the belly button (navel).

What causes large abdominal circumference in fetus?

Fetal macrosomia is more likely to be a result of maternal diabetes, obesity or weight gain during pregnancy than other causes. If these risk factors aren’t present and fetal macrosomia is suspected, it’s possible that your baby might have a rare medical condition that affects fetal growth.

How do you measure abdominal circumference?

The abdominal circumference is measured at the midpoint of the line between the rib or costal margin and the iliac crest in the midaxillary line. The maximal gluteal (buttock) circumference is also measured with the subject standing erect.

What is the main determinant of fetal abdominal circumference?

Maternal weight gain: a determinant for fetal abdominal circumference in the second trimester.