A nurse is collecting data from a newborn who weighs 5,160 g (11 lb, 6 oz) and whose mother has diabetes mellitus. For which of the following data should the nurse monitor?

Choice A rationale:

Rh incompatibility is not relevant in this scenario. Rh incompatibility refers to a condition where the mother's blood is Rh-negative, and the baby's blood is Rh-positive, which can lead to hemolytic disease of the newborn. However, this condition is unrelated to the client's current presentation of heavy, red vaginal bleeding without contractions.

Choice B rationale:

Frequency and duration of contractions are not the primary concern in this situation. The client's main complaint is heavy vaginal bleeding without contractions, which indicates a potential issue with the placenta or other pregnancy-related problems.

Choice C rationale:

Fetal lung maturity is not the priority at this stage. The client is at 38 weeks of gestation, which is considered full term. Fetal lung maturity is typically assessed if there's a need for early delivery, which is not indicated in this scenario.

Choice D rationale:

The correct choice. The client is experiencing heavy, red vaginal bleeding, which may be a sign of placental abruption, where the placenta separates from the uterine wall prematurely. Determining the location of the placenta through an ultrasound can help identify if placental abruption is the cause of bleeding. Placental abruption can be a serious condition that requires immediate medical attention.

Choice A rationale:
0.25 mL - The nurse should not administer 0.25 mL because the available concentration of vitamin K injection is 1 mg/0.5 mL. To achieve the prescribed dose of 1 mg, administering only 0.25 mL would be insufficient.
Choice B rationale:
0.5 mL - This is the correct choice. The nurse should administer 0.5 mL of the vitamin K injection to deliver 1 mg of vitamin K, as the concentration of the injection is 1 mg/0.5 mL. By giving the full 0.5 mL, the newborn will receive the appropriate 1 mg dose.
Choice C rationale:
0.75 mL - Administering 0.75 mL would be excessive for the prescribed 1 mg dose of vitamin K. It is unnecessary to give a higher volume than required, as it could lead to potential adverse effects or wastage.
Choice D rationale:
1 mL - Similarly, administering the entire 1 mL of the vitamin K injection would result in doubling the prescribed dose, leading to potential overdose and adverse reactions. The nurse should avoid administering more than the necessary 0.5 mL.