A nurse is assisting in the care of a newborn immediately after birth. At 5 min after birth, the newborn has acrocyanosis, flexed extremities, a grimace when suctioned, a heart rate of 130/min, and a lusty cry with tactile stimulation. What should the nurse document as the newborn's 5-min Apgar score?

Choice A rationale:

The nurse should monitor the urinary output of the client as it can be an important indicator of hydration and renal function. However, in this specific scenario, the administration of oxytocin via IV infusion after a vaginal delivery requires a different focus for evaluating medication effectiveness.

Choice B rationale:

The nurse should primarily assess the fundal consistency to evaluate the effectiveness of oxytocin. Oxytocin is often administered after childbirth to promote uterine contractions and prevent postpartum hemorrhage. Checking the fundal consistency helps determine if the uterus is contracting appropriately. A firm fundus indicates effective contractions, which are essential for controlling bleeding and preventing complications.

Choice C rationale:

Monitoring the pulse rate is a vital aspect of patient care, but it may not be the most relevant parameter to evaluate the effectiveness of oxytocin. Pulse rate can give information about the client's cardiovascular status and general well-being, but it does not directly assess the medication's impact on uterine contractions.

Choice D rationale:

Similarly, keeping an eye on blood pressure is crucial for patient safety and detecting potential issues like hypertension. However, it is not the primary parameter for evaluating the effectiveness of oxytocin. Blood pressure monitoring is essential for overall health assessment but does not directly relate to the medication's intended effect.

The correct answer is choice d. Vastus lateralis.

Choice A rationale:

The deltoid muscle is not typically used for newborn injections because it is too small and underdeveloped, making it an inappropriate site for intramuscular injections in this age group.

Choice B rationale:

The dorsogluteal muscle is also not recommended for newborns due to the risk of injury to the sciatic nerve and the muscle’s underdevelopment.

Choice C rationale:

The ventrogluteal muscle, while a good site for older children and adults, is not commonly used for newborns because it is not as easily accessible and developed as the vastus lateralis.

Choice D rationale:

The vastus lateralis muscle, located on the anterolateral aspect of the thigh, is the preferred site for intramuscular injections in newborns. It is well-developed and provides a large muscle mass, making it the safest and most effective site for administering vitamin K.