The presence of GDM in twin pregnancy was associated with a higher risk of hypertensive complications, prematurity and macrosomia, but significantly reduces the risk of SGA infants. Prematurity was related to the presence of other associated pregnancy complications.

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Women with pre-eclampsia showed significantly lower placental volume and vascularization indices at first trimester. Multiparity and low maternal weight independently exacerbated the negative effects of pre-eclampsia on placental characteristics and perinatal outcomes. © 2015 John Wiley & Sons, Ltd.