A nurse is caring for a newborn who is large for gestational age and is 12 hours old.
Which of the following laboratory tests should the nurse monitor based on the client's condition?
Bilirubin.
Glucose.
White blood cell count.
Arterial blood gases.
The Correct Answer is B
Choice A rationale
Bilirubin monitoring is critical for jaundice due to hemolysis, often seen in ABO incompatibility or cephalohematoma. While Large for Gestational Age (LGA) infants can have polycythemia, hypoglycemia is a more immediate and life-threatening risk that requires priority monitoring in the first hours of life. The normal total bilirubin range is typically less than 5 mg/dL in the first 24 hours.
Choice B rationale
LGA infants are often born to mothers with uncontrolled or gestational diabetes, leading to fetal hyperinsulinism. After birth, the maternal glucose supply is cut off, and the high insulin levels persist, causing a rapid and profound drop in the newborn's blood glucose, hence hypoglycemia is a major concern. The normal newborn glucose range is 40 to 60 mg/dL and should be monitored.
Choice C rationale
White blood cell (WBC) count is primarily monitored to detect neonatal sepsis or infection. While all newborns are at risk, the LGA classification does not inherently place them at a higher, unique risk for infection compared to the immediate metabolic derangement risks like hypoglycemia. The normal WBC count range is 9,000 to 30,000 cells/mm.
Choice D rationale
Arterial Blood Gases (ABGs) are used to assess the newborn's respiratory status and acid-base balance, particularly in respiratory distress syndrome or persistent pulmonary hypertension. While LGA infants can experience birth trauma or meconium aspiration, ABG monitoring is not routine unless significant respiratory symptoms are present.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Instructing the client to be NPO (nil per os), or nothing by mouth, is not typically required before an amniocentesis procedure. The client can usually eat and drink normally. Fasting is more commonly associated with procedures involving general anesthesia or those where there is a risk of aspiration, neither of which is routine for an amniocentesis. Clients may be asked to empty their bladder before the procedure to avoid puncturing it.
Choice B rationale
For an Rh-negative client undergoing an amniocentesis, there is a risk of fetomaternal hemorrhage during the procedure, which can lead to the mother's immune system producing Rh antibodies that attack the fetus's red blood cells in the current or future pregnancies. Therefore, administering Rh(D) immune globulin (RhoGAM) after the procedure is essential to prevent Rh sensitization. The standard dose is administered within 72 hours of the procedure.
Choice C rationale
Positioning the client in a left lateral position is typically used to promote optimal uteroplacental perfusion or during the second stage of labor. For an amniocentesis, the client is usually positioned in a supine position with a wedge placed under the right hip to slightly tilt the uterus and prevent vena cava compression, providing the provider with a clear anatomical view for ultrasound guidance.
Choice D rationale
The insertion site on the client's abdomen is cleaned with an antiseptic solution, such as povidone-iodine or chlorhexidine, to reduce the risk of introducing bacteria into the sterile field or uterus. Irrigating the site with sterile water is an inappropriate action for skin preparation as it is not a primary antiseptic and may interfere with the effectiveness of the chosen antiseptic solution.
Correct Answer is D
Explanation
Choice A rationale
Skin mottling, characterized by a patchy, net-like, reddish-blue discoloration of the skin, is typically caused by vasoconstriction in response to cold exposure or by circulatory changes in individuals with poor peripheral perfusion. This is not a typical, expected body change during a normal pregnancy; expected skin changes relate more to hyperpigmentation (e.g., chloasma, linea nigra).
Choice B rationale
During pregnancy, hormonal changes, particularly the increase in estrogen, shift a greater proportion of hair follicles into the anagen (growth) phase, leading to thicker, fuller hair. Hair thinning (telogen effluvium) is commonly experienced postpartum when hormone levels drop and the hair follicles shift rapidly back into the telogen (resting) phase, thus it is not expected at 14 weeks gestation.
Choice C rationale
Nipple inversion is a structural variation where the nipple is retracted into the areola; it is not a change that typically develops during pregnancy. Expected breast changes include areolar darkening (hyperpigmentation), prominent Montgomery's tubercles, and nipple erection. Nipple inversion is a pre-existing condition that may present challenges for breastfeeding.
Choice D rationale
Breast enlargement (hypertrophy) is an expected and early body change during pregnancy, beginning in the first trimester (around 6 weeks). This growth is driven by elevated estrogen and progesterone levels, stimulating the development of the mammary glands in preparation for lactation, and is often accompanied by tenderness and increased vascularity.
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