The student nurse learns that the process in which bilirubin is changed from a fat-soluble product to a water-soluble product is known as:
Unconjugation of bilirubin.
Albumin binding.
Enterohepatic circuit.
Conjugation of bilirubin.
The Correct Answer is D
Choice A rationale
Unconjugation of bilirubin is the process where bilirubin, initially produced in a water-insoluble form (unconjugated or indirect bilirubin), is not yet processed by the liver. This form cannot be easily excreted by the body.
Choice B rationale
Albumin binding refers to the transport of unconjugated bilirubin in the bloodstream. Because unconjugated bilirubin is fat-soluble and not easily dissolved in water, it binds to albumin, a protein in the blood, which allows it to be transported to the liver.
Choice C rationale
The enterohepatic circuit describes the circulation of bile acids from the liver to the small intestine, where they aid in fat digestion and absorption, and then back to the liver. Bilirubin is a byproduct of heme breakdown and is processed separately in the liver before excretion in bile.
Choice D rationale
Conjugation of bilirubin is the process that occurs in the liver where the enzyme uridine diphosphoglucuronate glucuronosyltransferase (UGT) attaches glucuronic acid molecules to unconjugated bilirubin. This process transforms the fat-soluble unconjugated bilirubin into a water-soluble form called conjugated (or direct) bilirubin, which can then be excreted in bile into the intestines.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Hyperemesis gravidarum is severe nausea and vomiting during pregnancy, typically occurring in the first trimester. While amniocentesis can cause some discomfort, it is not a known risk factor for hyperemesis.
Choice B rationale
Proteinuria is the presence of protein in the urine, which can be a sign of preeclampsia, a condition that can occur later in pregnancy. Amniocentesis, usually performed in the second trimester, is not directly linked to causing proteinuria.
Choice C rationale
Amniocentesis is an invasive procedure that involves inserting a needle through the abdominal wall and uterus to withdraw amniotic fluid. This procedure carries a risk of bleeding or hemorrhage from the insertion site or within the uterus. Therefore, observing for signs of hemorrhage is a crucial nursing intervention post-amniocentesis.
Choice D rationale
Hypoxia is a condition of insufficient oxygen supply to the tissues. While complications of amniocentesis could indirectly lead to fetal hypoxia in rare cases (e.g., placental abruption), it is not a direct and common complication to observe for in the mother. Hemorrhage is a more immediate and direct risk for the mother. .
Correct Answer is B
Explanation
Choice A rationale
A glucose reading of 58 mg/dL in a newborn is below the normal range (typically 40-60 mg/dL in the first hours of life, rising to 50-90 mg/dL). While this requires intervention to prevent hypoglycemia, other parameters might indicate a more immediate threat to the newborn's well-being.
Choice B rationale
A temperature of 97.4°F (36.3°C) is below the normal range for a newborn (typically 97.7°F to 99.5°F or 36.5°C to 37.5°C). Hypothermia in a newborn can lead to cold stress, increasing oxygen and glucose consumption, potentially leading to respiratory distress and hypoglycemia. Therefore, a low temperature requires immediate assessment and intervention to warm the newborn.
Choice C rationale
A respiratory rate of 48 breaths/minute is within the normal range for a newborn (typically 30-60 breaths/minute). While the respiratory rate should be monitored, it does not indicate an immediate critical issue in this case.
Choice D rationale
A pulse of 134 beats/minute is within the normal range for a newborn (typically 110-160 beats/minute). While the heart rate should be monitored, it does not indicate an immediate critical issue in this case. .
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