Should ultrasound be routine in the third trimester?

Detecting small-for-gestational age babies did not reduce adverse outcomes, large Dutch trial finds

Having two extra ultrasound scans in the third trimester increases detection of babies that are small-for-gestational age, but does not reduce severe adverse perinatal outcomes, a Dutch trial shows.

woman having ultrasound late in pregnancy

The researchers said their findings did not support routine ultrasonography in the third trimester for low-risk pregnancies.

The clinical trial, known as IRIS, randomised more than 7000 women under midwife-led antenatal care to two extra ultrasound scans at 28-30 and 34-36 weeks'.

Meanwhile, nearly 6000

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