A nurse is providing care for a patient who has recently given birth to her first child. The patient has a history of receiving a transfusion with Rh-negative blood.
The nurse expects hyperbilirubinemia due to Rh incompatibility.
What is the reason for hyperbilirubinemia occurring with Rh incompatibility?

The nurse expects hyperbilirubinemia due to Rh incompatibility.

Gastrointestinal assessment findings.

Respiratory rate.

Deep tendon reflexes.

Answer and Explanation

The Correct Answer is C

Choice A rationale

The patient’s anti-A and anti-B antibodies crossing the placenta and causing the destruction of the fetal red blood cells is related to ABO incompatibility, not Rh incompatibility.

Choice B rationale

If the patient’s blood contains the Rh factor and the newborn’s does not, Rh incompatibility would not occur. Rh incompatibility happens when the mother’s blood does not contain the Rh factor (Rh-negative), but the baby’s blood does contain the Rh factor (Rh-positive).

Choice C rationale

The patient’s blood does not contain the Rh factor, so she produces anti-Rh antibodies that cross the placental barrier and cause hemolysis of red blood cells in newborns. This is the correct reason for hyperbilirubinemia occurring with Rh incompatibility.

Choice D rationale

The patient’s blood containing anti-Rh antibodies that attack the newborn’s red blood cells is a result of Rh incompatibility, but it does not explain why hyperbilirubinemia occurs.

Hyperbilirubinemia occurs due to the breakdown of the extra red blood cells, leading to an increase in bilirubin levels.

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Correct Answer is A

Explanation

Choice A rationale

This is the correct answer. In infants of mothers with poorly controlled diabetes, hyperinsulinemia can lead to increased oxygen consumption and metabolic rate, which can contribute to the development of respiratory distress syndrome.

Choice B rationale

Increased blood viscosity is not the most likely cause of respiratory distress in a macrosomic newborn of a mother with poorly controlled diabetes.

Choice C rationale

A brachial plexus injury is a potential complication of delivery for macrosomic infants, but it is not a cause of respiratory distress syndrome.

Choice D rationale

Increased deposits of fat in the chest and shoulder areas can make delivery more difficult and can increase the risk of birth injuries, but they are not the most likely cause of respiratory distress syndrome in a macrosomic newborn of a mother with poorly controlled diabetes.

A. Cracked, peeling skin B. Abundant lanugo C. Short, soft fingernails D. Abundant vernix .

Correct Answer is A

Explanation

Choice A rationale: A postmature newborn, or one born after 42 weeks of gestation, is likely to exhibit cracked, peeling skin due to the prolonged exposure to amniotic fluid and the absence of vernix. This makes Choice A the correct answer, as it reflects the expected findings for a postmature newborn.

Choice B rationale: Abundant lanugo is typically seen in preterm infants, not postmature infants. Lanugo is a fine, downy hair that covers the fetus and usually disappears by 37 weeks of gestation. Therefore, Choice B is not an expected finding for a postmature newborn.

Choice C rationale: Short, soft fingernails are characteristic of preterm infants. In postmature infants, fingernails are generally long and may extend beyond the fingertips due to prolonged gestation. This makes Choice C an incorrect answer for the expected findings of a postmature newborn.

Choice D rationale: Abundant vernix is typically seen in preterm and term infants. Vernix is a white, cheesy substance that covers the fetal skin to protect it from amniotic fluid. Postmature infants usually have minimal to no vernix present, as it has already been absorbed. Therefore, Choice D is not an expected finding for a postmature newborn.

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Choice B rationale

Choice C rationale

Choice D rationale

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a term macrosomic newborn whose mother has poorly controlled type 2 diabetes. The newborn has respiratory distress syndrome. The nurse should be aware that the most likely cause of the respiratory distress is which of the following?

Correct Answer is A

Explanation

Choice B rationale

Choice C rationale

Choice D rationale

A nurse is preparing to assess a newborn who is postmature. Which of the following findings should the nurse expect?

Correct Answer is A

Explanation

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