Before revision: Fundal height landmarks Gestational age Fundal height landmark 12 weeks Pubic symphysis 24 weeks Umbilicus 36 weeks Xiphoid process of sternum 37–40 weeks Regression of fundal height between 36–32 cm Shorter measure A shorter measure can happen for one of the following reasons: Fetus descent into the pelvis, seen normally two to four weeks before delivery Error in estimated date of pregnancy based on first day of last menstrual period Fetus is healthy but physically small Oligohydramnios Non longitudinal lie Small for gestational age or Intrauterine Growth Restriction Longer measure On the other side, a longer measure can be caused by: Twins, or other types of multiple birth Error in estimated date of conception Fetus is healthy but physically large Gestational diabetes causing a larger baby Polyhydramnios Large for gestational age Hydatidiform Mole Breech birth As a pregnancy approaches its end, the fundal height will become less accurate.
After revision: Fundal height landmarks Gestational age Fundal height landmark 12-14 weeks Pubic symphysis 20-22 weeks Umbilicus 36-40 weeks Xiphoid process of sternum 37–40 weeks Regression of fundal height between 36–32 cm Shorter measure A shorter measure can happen for one of the following reasons: Fetus descent into the pelvis, seen normally two to four weeks before delivery Error in estimated date of pregnancy based on first day of last menstrual period Fetus is healthy but physically small Oligohydramnios Non longitudinal lie Small for gestational age or Intrauterine Growth Restriction Longer measure On the other side, a longer measure can be caused by: Twins, or other types of multiple birth Error in estimated date of conception Fetus is healthy but physically large Gestational diabetes causing a larger baby Polyhydramnios Large for gestational age Hydatidiform Mole Breech birth As a pregnancy approaches its end, the fundal height will become less accurate.