Kypros Nicolaides Explained: Everything to Know About the Father of Fetal Medicine
By Sophia Al-Mansoor
Nicolaides did not stop at prenatal diagnosis; he wanted to intervene. His defining surgical breakthrough addressed twin-to-twin transfusion syndrome (TTTS), a lethal condition affecting monochorionic (identical) twin pregnancies where abnormal blood vessel connections in a shared placenta pump blood disproportionately from one fetus to the other. Without intervention, TTTS resulted in intrauterine death rates exceeding 90%.
Beginning in 1992, Nicolaides refined endoscopic fetal surgery to reverse this dynamic. Inserting a needle-thin fetoscope measuring just 1.2 to 3 millimeters in diameter through the maternal abdominal wall, he guided an operating camera directly into the amniotic cavity. Using a tiny neodymium-doped yttrium aluminum garnet (Nd:YAG) laser fiber, he mapped the shared placenta and systematically coagulated the abnormal connecting anastomoses, separating the twin blood supplies.
The intervention turned a fatal prognosis upside down, yielding survival rates of 70% to 85% for at least one twin, and frequently saving both. The technique established fetoscopic laser therapy as the definitive worldwide treatment for TTTS.
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