The nurse is preparing diphenhydramine for nausea in a pediatric patient. The physician ordered 6.25 mg/kg intravenous push every six hours. The patient weighs 38 pounds, and the concentration of the medication is 50 mg/mL. How many mL will the nurse administer to the patient? Round to the nearest tenths place. Record numerical answer only.  

A. Determine fetal blood type: Ultrasound cannot determine the fetal blood type. This requires laboratory tests such as cord blood analysis or direct sampling.

B. Estimate gestational age: Ultrasound is commonly used to estimate gestational age by measuring the size of the fetus, particularly in the first and second trimesters. It helps provide an accurate prediction of the due date based on fetal measurements.

C. Diagnose chromosomal abnormalities: While ultrasound can help identify physical markers of potential chromosomal abnormalities (such as Down syndrome), it cannot definitively diagnose chromosomal conditions. Additional testing, such as amniocentesis or chorionic villus sampling, would be required for a definitive diagnosis.

D. Assess amniotic fluid volume: Ultrasound is an effective tool to assess the volume of amniotic fluid, which is crucial in evaluating fetal well-being and detecting conditions like oligohydramnios or polyhydramnios.

E. Estimate fetal growth: Ultrasound can be used to estimate fetal growth by measuring the size of the fetus and comparing it to standard growth charts. This helps in assessing whether the fetus is growing appropriately for the gestational age.

F. Determine placental location: Ultrasound is the primary method for determining the location of the placenta within the uterus. This is important to ensure that the placenta is not obstructing the birth canal (placenta previa) or located in a position that could lead to complications.

A. On the stomach with a pillow under her breasts: Sleeping on the stomach is not recommended during pregnancy as it becomes increasingly uncomfortable and impractical as pregnancy advances due to the growing uterus.

B. On the side with the weight of the uterus on the bed: This is the recommended position for pregnant women, especially in the second and third trimesters. Sleeping on the left side is particularly beneficial as it improves blood circulation, reduces pressure on the vena, and promotes better blood flow to the placenta and fetus.

C. On the back with a pillow under the knees and hips: Sleeping on the back is generally not recommended after the first trimester because the weight of the uterus can compress the major blood vessels, such as the inferior vena cava, reducing blood flow to the fetus.

D. On the back with a pillow under the head: While this position may be comfortable, sleeping on the back during pregnancy can lead to reduced blood flow to the fetus, especially in the later stages of pregnancy, and is generally not recommended. The side position is preferred.