Binational cohort study comparing the management and outcomes of pregnant women with a BMI >50-59.9 kg/m2 and those with a BMI ≥60 kg/m2.

Women are managed differently on the basis of BMI even at this extreme as shown by thromboprophylaxis. The pre-eclampsia result suggests that future research should examine whether weight reduction of any amount prior to pregnancy could reduce poor outcomes even if women remain extremely obese.