Abstract:
BACKGROUND:Maternal D alloimmunization detected in early gestation requires aggressive intervention to prevent severe fetal anemia. An intrauterine transfusion (IUT) is indicated to prevent fetal death once severe fetal anemia has been detected, but is not without risk. Protocols combining therapeutic plasma exchange (TPE) and intravenous immunoglobulin (IVIG) have been described, but they usually bridge to IUT. STUDY DESIGN AND METHODS:We describe a 27-year-old G4, P0-1-2-0 Caucasian female with a history of ruptured ectopic pregnancy presented at 12 weeks' gestation with a very high anti-D titer (2048). TPE was performed on that week and twice more in the following week, with a fourth final exchange during Week 14. A loading dose of IVIG (2 g/kg) was administered over 2 days after the third TPE and then 1 g/kg per week until Week 28 (total, 14 doses). RESULTS:The antibody titer decreased to 256 by the beginning of 15 weeks' gestation and remained stable at that level for the remainder of the pregnancy. Doppler ultrasonographic measurements of the fetal middle cerebral artery peak flow velocity performed throughout gestation showed no evidence of fetal anemia. A healthy male infant was delivered at 37 weeks' gestation with mild immune-mediated hemolysis. The infant underwent successful treatment with an IVIG dose of 750 mg/kg and a red blood cell exchange. CONCLUSION:Our unique TPE-IVIG protocol was successful at preventing the onset of severe fetal anemia in a patient with high titer anti-D. Since IUT may be fatal, our approach offers a safer and less-invasive treatment regime that can adequately sustain a fetus until term.
journal_name
Transfusionjournal_title
Transfusionauthors
Bellone M,Boctor FNdoi
10.1111/trf.12633subject
Has Abstractpub_date
2014-08-01 00:00:00pages
2118-21issue
8eissn
0041-1132issn
1537-2995journal_volume
54pub_type
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