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Pregnancy Ultrasound

Regular ultrasounds are an important part of your prenatal care. Your doctor will perform an ultrasound along with a clinical examination in order to determine your health status and the health status of your pregnancy. An ultrasound is a simple tool that can help determine gestational age, expected date of delivery, identify fetal abnormalities, ectopic pregnancy or possible obstetric complications.

Based on World Health Organization (WHO) guidelines, we recommend women have at least three ultrasounds during each pregnancy.

1st trimester ultrasound: performed at 11-13 weeks gestation.  This scan provides accurate dating of the pregnancy and estimated delivery date, diagnosis of multiple pregnancies, early pregnancy failure, detection of some physical abnormalities and detection of chromosomal abnormalities (including Down syndrome).

2nd trimester ultrasound: performed at 20-24 weeks gestation.  This scan allows measurement of your baby; examination of the placenta and amniotic fluid, both of which can help identify any complications with the pregnancy; and examination of your baby's organs, including the brain, the spine, the heart and the limbs, which helps with the diagnosis of any congenital abnormalities.

3rd trimester ultrasound: performed at 30-32 weeks gestation.  This scan aims to determine the growth and health of your baby by measuring the fetal head, abdomen and thigh bone and calculating the estimated fetal weight; examining the placental position and appearance; and measuring the amount of amniotic fluid.  These measurements and examinations help detect any potential risk of obstetric complications.


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