Objective: It was the aim of this study to report a case of fetomaternal hemorrhage (FMH) that was successfully treated with fetal intravascular transfusions in which the middle cerebral artery peak systolic velocity (MCA-PSV) detected fetal anemia. Methods: A massive FMH occurred twice in a healthy 33-year-old pregnant woman at 26 and 29 weeks of gestation with no evident cause. Four repeated intravascular transfusions were performed. The MCA-PSV increased in the presence of anemia and decreased following correction of fetal hematocrit. Results: A healthy neonate was delivered at 33 weeks of gestation. Conclusion: MCA-PSV detected fetal anemia both before the first transfusion and following the next intravascular transfusions. In our case, the change in fetal blood viscosity following transfusion with adult blood did not affect the MCA-PSV value for detection of fetal anemia.

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L’accès au ventre originel est objet de fascination pour chacun, mais sans doute plus particulièrement pour ceux qui font profession d’en faire l’inventaire. La rencontre entre l’échographiste et la mère qui porte ce ventre plein peut ressembler à un affrontement lorsque leurs attentes, par définition contradictoires, réveillent des émotions qui vont interagir fortement. D’autant que l’enfant dont on parle est encore virtuel et que sa représentation est très différente pour les protagonistes.

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