Antenatal factors at diagnosis that predict outcome in twin-twin transfusion syndrome

Objective: We sought to identify clinical factors at diagnosis that predict outcome in twin-twin transfusion syndrome. Study Design: In this retrospective series 23 patients with twin-twin transfusion syndrome were seen in a tertiary referral fetal medicine center over a 3-year period. Ten antenatal factors were assessed to determine their ability to predict outcome by use of ordered logistic regression. These factors were the following: (1) absent or reversed end-diastolic flow in the umbilical artery, nonvisible bladder, anhydramnios, and estimated fetal weight of