Perinatal outcome after laser therapy of recipient twins affected by right ventricle outflow tract obstruction

Objective: To describe the prevalence and evolution of pulmonary stenosis or atresia (PS-A) in recipient twins after selective laser photocoagulation of communicating vessels (SLPCV) in twin-to-twin transfusion syndrome (TTTS). Methods: 260 cases of TTTS were managed by SLPCV during a 6-year period. A fetal echocardiographic evaluation of all recipient twins before and after laser therapy was performed, in order to assess in utero resolution or progression of the pulmonary obstruction. The diagnosis of PS-A was confirmed by postnatal pediatric cardiologist examination or autopsy in cases of perinatal death. Othe…