Start What is miscalculation of pregnancy dating

What is miscalculation of pregnancy dating

The goal of management of post-term pregnancy is to prevent complications and deliver a healthy baby.

The vast majority of women deliver between 37 and 42 weeks of pregnancy.

In a post-term pregnancy, testing may be done to check fetal well-being and identify problems.

Tests often include ultrasound, nonstress testing (how the fetal heart rate responds to fetal activity), and estimation of the amniotic fluid volume.

Amniotic fluid volume may decrease and the fetus may stop gaining weight, or may even lose weight.

Risks can increase during labor and birth for a fetus with poor oxygen supply. Babies born after 42 weeks may be at risk for meconium aspiration, when a baby breathes in fluid containing the first stool.

The size of the uterus at various points in early pregnancy, the date the fetal heartbeat was first heard, and when a mother first feels fetal movement all help confirm pregnancy dates.

Ultrasound (a diagnostic imaging technique that uses high-frequency sound waves and a computer to create images of blood vessels, tissues, and organs) is often used in early pregnancy to establish or confirm a due date.

Hypoglycemia (low blood sugar) can also occur because the baby has too little glucose-producing stores.