Key result
A theoretical flow model demonstrated that the pump twin's excess cardiac output and decreased venous oxygen saturation depend on the ratio of pump twin to acardiac twin umbilical blood flow.
Population
Acardiac twin pregnancies (pump twins)
Authors
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May support ultrasonographic umbilical flow monitoring in acardiac twin pregnancies; leaves open prospective clinical validation.
A theoretical flow model suggests that measuring umbilical flow ratios by ultrasonography could help monitor the pathophysiologic development of pump twins in acardiac twin pregnancies.
Gemert et al. (2005) studied Acardiac twin pregnancy. Umbilical blood flow ratio was evaluated on Pump twin's excess cardiac output and decrease of venous oxygen saturation. A theoretical flow model demonstrated that the pump twin's excess cardiac output and decreased venous oxygen saturation depend on the ratio of pump twin to acardiac twin umbilical blood flow.
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