In most cases with mirror syndrome, prompt delivery is indicated and followed by resolution of maternal edema and other findings (Braun, 2010). However, in isolated cases of fetal anemia, supraventricular tachycardia, hydrothorx, and bladder outlet obstruction, successful fetal treatment resulted in resolution of both fetal hydrops and maternal mirror syndrome (Goa, 2013; Livingston, 2007; Llurba, 2012; Midgley, 2000). Normalization of the angiogenic imbalance has also been described following fetal transfusion for parvovirus B 19 infection. Fetal therapy for these conditions is reviewed in Chapter 16. Given the parallels to severe preeclampsia, delaying delivery to efect fetal therapy should be considered only with caution. If the maternal condition deteriorates, delivery is recommended.
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