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 (%) | 0 | 0 | 62 | 50 | 37 | Umbilical vein pulsations (%) | 0 | 0 | 50 | 67 | 32 | Fusion of RV inflow (%) | 36 | 37 | 38 | 83 | 41 | Tricuspid regurgitation (%) | 9 | 21 | 38 | 67 | 31 | RV-MPI percentile 97.5 (%) | 45 | 47 | 48 | 83 | 49 | Fusion of LV inflow (%) | 9 | 21 | 29 | 67 | 27 | Mitral regurgitation (%) | 0 | 0 | 10 | 50 | 10 | LV-MPI percentile 97.5 (%) | 25 | 42 | 38 | 83 | 41 |
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RV: right ventricle, LV: left ventricle, and MPI: myocardial performance index.
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