A nurse is preparing to administer vitamin K 1 mg IM to a newborn. Available is vitamin K injection 1 mg/0.5 mL. How many mL should the nurse administer per dose?
Choice A: 0.25 mL
Choice B: 0.5 mL
Choice C: 0.75 mL
Choice D: 1 mL
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
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.
Correct Answer is D
Explanation
The cervix is dilated 3 cm: This indicates the width of the cervical opening, which is 3 cm wide.
It is effaced 30%: This means the cervix has effaced or thinned out by 30%, indicating how much the cervix has shortened and thinned in preparation for labor.
The presenting part is 1 cm above the ischial spines (indicated by the negative number, -1): This measurement shows the position of the baby's head in relation to the ischial spines of the pelvis. In this case, the baby's head is 1 cm above the ischial spines.
Option A ("The cervix is dilated 3 cm, it is effaced 30%, and the presenting part is 1 cm below the ischial spines."): This option incorrectly interprets the baby's position as being 1 cm below the ischial spines, which is not the case. The negative sign (-1) in the documentation indicates that the presenting part is 1 cm above the ischial spines.
Option B ("The cervix is effaced 3 cm, it is dilated 30%, and the presenting part is 1 cm above the ischial spines."): This option switches the interpretation of dilation and effacement. In the original documentation, the dilation is given as 3 cm, while effacement is 30%. This option incorrectly states that effacement is 3 cm and dilation is 30%. Additionally, it correctly identifies the presenting part's position.
Option C ("The cervix is effaced 3 cm, it is dilated 30%, and the presenting part is 1 cm below the ischial spines."): This option correctly interprets effacement and dilation but incorrectly states that the presenting part is 1 cm below the ischial spines. The original documentation indicates that the presenting part is 1 cm above the ischial spines, as denoted by the negative sign (-1).
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