Postnatal transient renal insufficiency in the feto-fetal transfusion syndrome

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Abstract
Twinning and higher-order multiple-gestation pregnancies have become relatively frequent in the current era of assisted reproductive techniques. Vascular interconnections are present in nearly all monochorionic twin placentae, yet hemodynamically significant arteriovenous anastomoses resulting in the feto-fetal transfusion syndrome occur in only 5%–18% of these. When arteriovenous connections through a shared placental cotyledon are present, variable amounts of blood may be transfused from one fetus to the other, and feto-fetal transfusion syndrome may result. While reports of renal failure due to a small non-functioning kidney in the donor infant pre- or postnatally have been published, recoverable renal insufficiency has not been previously delineated in feto-fetal transfusion syndrome. This article describes a case of postnatal transient renal insufficiency in a donor infant from a pair of monozygotic twins.

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