High-risk pregnancy

Last revised by Daniel J Bell on 18 Aug 2021

High-risk pregnancies are any that actually or potentially threaten either the health or life of the mother or her fetus during pregnancy, labor, or birth. From a radiological perspective, high-risk pregnancies may undergo further screening or have close follow-up with growth and well-being scans. 


Approximately 20% (range 6-33%) of women have high-risk pregnancies 1-3.


Risk factors

The National Institutes of Health (USA) lists the following high-risk pregnancy categories 3:

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