Review Article

The Fetal Heart in Twin-to-Twin Transfusion Syndrome

Table 1

Occurence of cardiac function alterations in 78 consecutive recipient fetuses assessed at the University Hospitals Leuven, Belgium.

Stage I ( )Stage II ( )Stage III ( )Stage IV Overall ( )

Reversed a-wave ductus venosus (%)00625037
Umbilical vein pulsations (%)00506732
Fusion of RV inflow (%)3637388341
Tricuspid regurgitation (%)921386731
RV-MPI percentile
97.5 (%)
4547488349
Fusion of LV inflow (%)921296727
Mitral regurgitation (%)00105010
LV-MPI percentile
97.5 (%)
2542388341

RV: right ventricle, LV: left ventricle, and MPI: myocardial performance index.