stuck twin phenomenon
Severe oligohydramnios in one twin causing apparent adherence to the uterine wall, typically seen in twin-to-twin transfusion syndrome.
Full Definition
A clinical manifestation of severe twin-to-twin transfusion syndrome where the donor twin develops profound oligohydramnios, causing the fetus to appear 'stuck' against the uterine wall with minimal or absent amniotic fluid around it. The affected twin shows restricted movement and may appear wrapped tightly by the amniotic membrane. This finding indicates severe hemodynamic imbalance between monochorionic twins, with the donor twin becoming progressively smaller and anemic. Recognition of the stuck twin phenomenon is critical for staging TTTS severity and determining appropriate intervention timing, often requiring urgent laser therapy or amnioreduction.
Usage
Usage note: Often shortened to 'stuck twin' in clinical documentation.
In Context
- "The scan revealed stuck twin phenomenon in the smaller twin, indicating severe TTTS requiring immediate intervention." — Fetal medicine consultation
- "Following laser therapy, the stuck twin showed improved amniotic fluid volume and movement." — Post-procedure report