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A nurse is caring for a client who has just delivered her first newborn. The nurse anticipates hyperbilirubinemia due to Rh incompatibility. The nurse should understand that hyperbilirubinemia occurs with Rh incompatibility for which of the following reasons?

The client'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.

The client's blood contains the Rh factor, and the newborn's does not, and antibodies that destroy red blood cells are formed in the fetus.

The client has a history of receiving a transfusion with Rh-negative blood.

The client's anti-A and anti-B antibodies cross the placenta and cause the destruction of the fetal red blood cells.

Answer and Explanation

The Correct Answer is A

Choice A rationale:

Rh incompatibility occurs when an Rh-negative client is exposed to Rh-positive fetal blood, typically during a prior pregnancy or delivery. The client’s immune system produces anti-Rh antibodies that cross the placenta in subsequent pregnancies, attacking the Rh-positive red blood cells of the fetus. This hemolysis releases bilirubin, leading to hyperbilirubinemia in the newborn.

Choice B rationale:

Rh incompatibility only occurs when the client is Rh-negative and the fetus is Rh-positive. An Rh-positive client will not form antibodies against an Rh-negative fetus, as their immune system recognizes the Rh factor as normal.

Choice C rationale:

This choice is not related to the mechanism of Rh incompatibility. Receiving a transfusion with Rh-negative blood would not cause the mother's immune system to produce anti-Rh antibodies or lead to Rh incompatibility with her newborn.

Choice D rationale:

This choice describes the ABO blood group system, not the Rh factor. ABO incompatibility can occur when a mother with blood type O (producing anti-A and anti-B antibodies) has a newborn with blood type A, B, or AB, leading to hemolysis of the fetal red blood cells. However, the question specifically mentions Rh incompatibility, which involves the Rh factor, not the ABO system.

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Correct Answer is A

Explanation

Choice A rationale:

Naegele's Rule is used to estimate the expected delivery date (EDD) by adding 7 days and 9 months to the first day of the last menstrual period (LMP) In this case, May 4th, 2018, is the first day of the LMP. Adding 7 days brings us to May 11th, and then adding 9 months brings us to February 11th, 2019, which is the estimated delivery date.

Choice B rationale:

This option is incorrect because it adds 9 months to the LMP without accounting for the additional 7 days, resulting in an inaccurate EDD.

Choice C rationale:

This option is incorrect because it only adds 9 months to the LMP without considering the 7 days, leading to an inaccurate EDD.

Choice D rationale:

This option is incorrect because it adds 9 months to the LMP without considering the 7 days, resulting in an inaccurate EDD.

A. Hypotonicity. B. Moderate tremors of the extremities. C. Axillary temperature 36.1°C (96.9°F) D. Excessive sleeping.

Correct Answer is B

Explanation

Choice A rationale:

Hypotonicity, or decreased muscle tone, is not an expected finding in a newborn experiencing opioid withdrawals. Opioid withdrawal symptoms usually involve increased muscle tone and jitteriness.

Choice B rationale:

Moderate tremors of the extremities are an expected finding in a newborn experiencing opioid withdrawals. Neonates born to mothers who used opioids during pregnancy can exhibit tremors, irritability, and other withdrawal symptoms.

Choice C rationale:

An axillary temperature of 36.1°C (96.9°F) is within the normal range for a newborn's body temperature, so it is not directly related to opioid withdrawal and is not the expected finding in this situation.

Choice D rationale:

Excessive sleeping is not an expected finding in a newborn experiencing opioid withdrawals. Opioid withdrawal can lead to increased wakefulness and irritability in newborns.

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A nurse is caring for a client who has just delivered her first newborn. The nurse anticipates hyperbilirubinemia due to Rh incompatibility. The nurse should understand that hyperbilirubinemia occurs with Rh incompatibility for which of the following reasons?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A pregnant client's last menstrual period was May 4th, 2018. What is this client's estimated delivery date using Naegele's Rule?

Correct Answer is A

Explanation

A nurse is assessing a newborn who is 48 hours old and is experiencing opioid withdrawals. Which of the following findings should the nurse expect?

Correct Answer is B

Explanation

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