Placental conditions

The POPPY study is looking into why some women are at an increased risk of placental conditions.

Placental conditions include:

Gestational hypertension

It is high blood pressure that can occur after 20 weeks of pregnancy. Click here to learn more about gestational hypertension.


It is high blood pressure that can occur after 20 weeks of pregnancy, often in combination with protein in the urine (proteinuria) and/or problems with the kidneys, liver or brain. Click  here to learn more about pre-eclampsia.

Fetal growth restriction

This is where a baby is smaller than expected or when a baby’s growth slows or stops during pregnancy. Click  here to learn more about fetal growth restriction.

What is blood pressure?

Blood pressure is a measure of the force that the heart uses to pump blood around the body. It is measured in millimetres of mercury (mmHg) and is given as 2 figures: systolic and diastolic.

We consider high blood pressure to be equal to or higher than 140mmHg (systolic – top number) and/or 90mmHg (diastolic- bottom number).

Your midwife or healthcare provider will regularly monitor your blood pressure at your antenatal checks to make sure it is within normal limits.