The association of an abnormal fetal heart rate (FHR) and chromosomal anomalies in the first trimester of pregnancy remains unclear, probably because of the lack of control for known confounding… Click to show full abstract
The association of an abnormal fetal heart rate (FHR) and chromosomal anomalies in the first trimester of pregnancy remains unclear, probably because of the lack of control for known confounding factors. This study was designed to determine whether an increased FHR is an independent risk factor for chromosomal anomalies between 11 and 14 weeks’ gestation.
               
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