脐血流sd值各孕周标准

24周4.0+-1.8,25周3.8+-1.8,26周3.8+-1.8,27周3.7+-1.6,28周3.8+-1.9,29周3.4+-1.5,30周3.2+-1.6,31周3.1+-1.4,32周3.0+-1.4,33周2.9+-1.3,34周2.8+-1.2,35周2.6+-1.4,36周2.5+-1.3,37周2.4+-1.3,38周2.3+-1.1,39周2.3+-0.9,40周2.2+-0.8