Liley curve for evaluation of amnionic fluid bilirubin in Rh sensitized patient stas at
The main limitation of the liley curve is that it stas at 26weeks gestation and extrapolation of the lines to earlier gestational ages is inaccurate. Queenan has developed a curve for fetal assessment from 14-40weeks, divided into 4zones
14weeks
16weeks
20weeks
26weeks
Medical, surgical and gynaecological illness complicating pregnancy