The nurse is preparing to administer the vitamin K injection to a newborn. Which action would be correct for this client?
Using a 21 gauge needle.
Injecting at a 45-degree angle.
Injecting 1cc of medication.
Injecting the medication into the vastus lateralis.
The Correct Answer is D
Injecting the medication into the vastus lateralis. This is because the vastus lateralis is a large muscle in the thigh that is suitable for intramuscular injections in newborns³. The vitamin K injection helps prevent vitamin K deficiency bleeding, which is a rare but serious condition that can cause bleeding in the brain or other organs¹. The American Academy of Pediatrics recommends that all newborns receive a single intramuscular dose of 0.5 to 1 mg of vitamin K within one hour of birth².
Choice A is wrong because a 21 gauge needle is too large for a newborn's muscle. A 25 or 27 gauge needle is more appropriate.
Choice B is wrong because injecting at a 45-degree angle may not reach the muscle tissue. A 90-degree angle is more appropriate.
Choice C is wrong because injecting 1cc of medication is too much for a newborn's muscle. The recommended dose of vitamin K is 0.5 to 1 mg, which is equivalent to 0.05 to 0.1 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Check for blood under the client's buttock. This is because lochia rubra is the normal vaginal discharge that occurs after childbirth, consisting of blood, mucus, and tissue from the placenta and the uterus lining. It is usually heavy for the first three to four days and can pool under the client's buttocks if they are lying down. Checking for blood under the buttock can help assess the amount of bleeding and prevent complications such as infection or hemorrhage.
The other choices are not correct for the following reasons:
A. Increasing the rate of the IV fluids is not necessary because the client's fundus is firm and midline, indicating that the uterus is contracting well and preventing excessive bleeding.
B. Assisting the client to ambulate is not advisable because it can increase the lochia flow and cause fainting or dizziness due to blood loss.
C. Performing fundal massage is not indicated because the fundus is already firm and midline, meaning that the uterus is adequately contracted. Massaging a firm fundus can cause pain and discomfort to the client.
Correct Answer is B
Explanation
Fundus firm, at the level of the umbilicus. This is because the normal postpartum uterine fundus location should be around the belly button (umbilicus) one hour after delivery and then decrease by 1 cm per 24 hours. A firm fundus indicates that the uterus is contracting well and preventing bleeding.

Choice A is wrong because a soft fundus indicates uterine atony, which is a risk factor for hemorrhage.
Choice C is wrong because the fundus should not be above the umbilicus 12 hours after delivery.
Choice D is wrong because a fundus to the right of the umbilicus indicates a full bladder, which can displace the uterus and cause bleeding.
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