Abstract
The aim of the present study was to report a 3-year experience on the prenatal control of Hb Bart’s (γ4) disease in Mainland China. All pregnancies with fetal Hb Bart’s disease were included from January 2011 to December 2013. The main clinical characteristics of the affected pregnancies were reviewed, including maternal reproductive history, prenatal care in the current pregnancy, the gestation of pregnancy at the time of booking, the gestation at the time of prenatal diagnosis (PND), and the complications associated with the pregnancy. A total of 246 cases of fetal Hb Bart’s disease were identified during the study period; among these, 177 (72.0%) were diagnosed in early gestation (≤24 weeks), and 69 (28.0%) in late gestation. Most (87.0%) of the patients presenting in late pregnancy had late or no prenatal care. Twenty (29.0%) had major obstetrical complications in patients presenting in late pregnancy, and five (5.0%) in patients presenting in relatively early pregnancy. The delay in PND deprived couples of opportunities to make informed decisions early in pregnancy. Efforts for designing and targeting strategies to improve the timeliness of prenatal care are urgently needed.
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