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  • Title: Prediction of fetal anemia by different thresholds of MCA-PSV and Delta-OD in first and second intrauterine transfusions.
    Author: Rahimi-Sharbaf F, Shariat M, Mirzaie F, Dehghan P, Dastgardy E, Adabi K.
    Journal: Arch Iran Med; 2012 Mar; 15(3):162-5. PubMed ID: 22369305.
    Abstract:
    BACKGROUND: Our aim was to compare different thresholds of middle cerebral artery peak systolic velocity (MCA-PSV) and amniotic fluid delta optical density (Delta-OD) with fetal hemoglobin (Hb) during first and second intrauterine transfusions (IUT). METHODS: We determined serial MCA-PSV and Delta-OD in 27 red blood cell alloimmunized fetuses who needed IUT. Before the second IUT, MCA-PSV was measured. The sensitivity and specificity of MCA-PSV and Delta-OD were calculated and compared with fetal hemoglobin  levels. RESULTS: From 27 fetuses, first time IUT MCA-PSV with a normal median value (MOM) cutoff of > 1.29 detected 60% of the moderate and 100% of the severe anemia cases. MCA-PSV of MOM > 1.5 detected none of the moderate and 93% of severe anemia cases. Delta-OD detected 50% of moderate anemic and 80% of severe anemic cases. At the second IUT, 91% of severe anemia cases were confirmed by MCA-PSV with MOM > 1.5 whereas MCA-PSV with MOM > 1.29 confirmed all cases. One case of moderate anemia was de-tected by MCA-PSV of MOM > 1.29 and none were detected by MCA-PSV with MOM > 1.5. CONCLUSION: Different thresholds of MCA-PSV have higher sensitivity and specificity for detecting moderate and severe fetal anemia compared with Delta-OD. It also has a high sensitivity at the second IUT.
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