1 Use a small screwdriver to press the spline into the corners as necessary. 2  As you press the spline into the frame it will make the screen taught. 3  Once installed, trim the excess screen material with scissors or a utility knife.
In normal pregnancy the mean fetal haemoglobin increases linearly from 11 g/dl at 17 weeks' gestation to 15 g/dl at 40 weeks' gestation and one standard deviation is approximately 1 g/dl. The haemoglobin was also measured in fetal blood from 154 red cell isoimmunised pregnancies from 17 to 36 weeks' gestation.
First, itâs important to understand that itâs normal for hemoglobin levels to fall during pregnancy. As the chart below illustrates, normal levels of hemoglobin in non-pregnant women range from 12-16 g/dL.In a pregnant women @28 weeks, that range falls from 10-14 g/dL.This is a normal physiological change during pregnancy, and doesnât indicate a problem.Hemoglobin levels will return to the non-pregnant range in the weeks after birth.Furthermore, the best birth outcomes are associated with hemoglobin levels at the low-end of the 10-14 g/dL range.his is a normal physiological change during pregnancy, and doesnât indicate a problem. Hemoglobin levels will return to the non-pregnant range in the weeks after birth. Furthermore, the best birth outcomes are associated with hemoglobin levels at the low-end of the 10-14 g/dL range.