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?

Choice C rationale:

Hypotension is a finding that indicates the client is experiencing decreased cardiac output. Excessive vaginal bleeding can lead to hypovolemia, reducing the volume of blood pumped by the heart and resulting in decreased cardiac output. The body responds to hypovolemia and decreased cardiac output by trying to maintain blood pressure, which leads to hypotension.

Choice A rationale:

Bradycardia is not a finding indicating decreased cardiac output in this scenario. While bradycardia (abnormally slow heart rate) can be associated with decreased cardiac output in certain situations, it is not the primary finding in a postpartum client experiencing excessive vaginal bleeding.

Choice B rationale:

A flushed face is not an indicator of decreased cardiac output. A flushed face may result from various factors such as fever or emotional stress, but it is not directly related to cardiac output.

Choice D rationale:

Polyuria (excessive urination) is not an indicator of decreased cardiac output. Polyuria may occur due to factors like diuresis or increased fluid intake but is not directly related to cardiac output in the context of excessive vaginal bleeding.

Choice A rationale:

Keeping the newborn dressed while receiving phototherapy is not recommended because the baby's skin needs to be exposed to the light to effectively treat hyperbilirubinemia. Direct exposure to light helps break down the excess bilirubin in the baby's blood, leading to its excretion.

Choice B rationale:

Applying lotion to the skin twice daily is contraindicated during phototherapy. Lotions and creams can block the light from reaching the skin and hinder the therapeutic effects of the phototherapy. The baby's skin should remain exposed to the light for optimal treatment.

Choice C rationale:

Maintaining an eye mask over the newborn's eyes is essential during phototherapy. The eyes are sensitive to light, and prolonged exposure to the phototherapy light can lead to eye damage. Using an eye mask protects the baby's eyes while allowing the rest of the body to receive the necessary light treatment.

Choice D rationale:

Maintaining the phototherapy during blood draws is crucial to ensure continuous treatment of hyperbilirubinemia. Interrupting the phototherapy during blood draws might result in the rebound of bilirubin levels, which can be harmful to the baby.