twin-to-twin transfusion syndrome

(redirected from Twin twin transfusion syndrome)
Intrauterine growth retardation in 1 twin due to an artery-to-artery vascular shunting, which may occur in a diamnionic-dichorionic placenta, accompanied by hydramnios; the ‘donor’ twin is anaemic, pale, lighter, smaller with organ hypoplasia; the recipient twin is plethoric, polycythemic, macrosomic, has increased vascular resistance and may develop heart failure

twin-to-twin transfusion syndrome

Fetal transfusion syndrome, fetofetal transfusion syndrome, stuck twin syndrome Obstetrics Intrauterine growth retardation in 1 twin due to an artery-to-artery vascular shunting, which may occur in a diamnionic-dichorionic placenta and be accompanied by hydramnios; the 'donor' twin is anemic, pale, lighter, smaller with organ hypoplasia; the recipient twin is plethoric, polycythemic, macrosomic, has ↑ vascular resistance and may develop heart failure. Cf Twin arterial reversed perfusion sequence.
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The most common condition affecting fetuses is Twin Twin Transfusion Syndrome (TTTS); if untreated early in pregnancy, there is approximately a 90 percent chance that both twins will die.