Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 1

Plotting the amniotic fluid OD on a Liley graph represents the severity of hemolytic disease of the newborn. A value that is plotted in zone II indicates what condition of the fetus?

A. No hemolysis

B. Mildly affected fetus

C. Moderately affected fetus that requires close monitoring

D. Severely affected fetus that requires intervention

Step 1 of 2

Amniotic fluid:

Fetus is surrounded by a membranous sac called amnion. The existence of amniotic fluid can be seen in amnion.

Liley graph:

The severity of hemolytic disease in the new born baby is determined using liley graph.

• In the liley graph, the OD (optical density) wavelength of 450 nm is plotted against gestation age and is divided into three zones to represent the hemolytic severity

• Zone I values indicate that the fetus is no more than mildly affected

• Zone II values indicate that the fetus is moderately affected and requires careful monitoring in case of early delivery or exchange transfusion upon delivery

• Zone III values indicate that the fetus is severely affected

Therefore, the values plotted in zone II indicates that condition “moderately affected fetus that requires close monitoring”. Hence, the correct answer is option.