Main Findings
Multivariate analysis showed that twin pregnancy, nulliparity, and preeclampsia were significantly associated with maternal renal dysfunction during pregnancy. Although preeclampsia is clearly associated with maternal renal dysfunction, the present study revealed that twin pregnancy is a risk factor for maternal renal dysfunction. However, there were no differences in maternal renal function based on chorionicity. In the present study, all 13 twin mothers with renal dysfunction recovered to within normal limits during the postpartum period.