A better guideline for twin-to-twin-transfusion syndrome are anticipated to be established in China. Fetoscopic laser surgery is applied to treat TTTS. After surgery, better prediction indicators of the prognosis of TTTS are needed.
Fetal medicine in China is still a new, young discipline, and the development is very rapid. After nearly 10 years of development, the clinical diagnosis and treatment guidelines of some complicated twin diseases has been established. Among them, twin-to-twin-transfusion syndrome (TTTS) is serious disease in twin pregnancy, and the factors affecting prognosis after fetoscopic laser surgery are part of the study. Through this study, the investigators expect to achieve better prediction indicators of the prognosis of TTTS.