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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Hypotension is not an expected finding in a client with severe preeclampsia. In preeclampsia, the client typically experiences hypertension (high blood pressure) rather than hypotension (low blood pressure). Hypotension may be concerning as it could indicate inadequate perfusion to vital organs.
Choice B rationale:
Headache is an expected finding in a client with severe preeclampsia. Headaches are a common symptom of preeclampsia and are often described as persistent and severe. They can result from increased blood pressure and possibly cerebral oedema.
Choice C rationale:
Tachycardia is not an expected finding in a client with severe preeclampsia. Tachycardia refers to an abnormally fast heart rate, but in preeclampsia, bradycardia (abnormally slow heart rate) or a normal heart rate is more typical. Tachycardia could indicate other underlying issues.
Choice D rationale:
Polyuria is not an expected finding in a client with severe preeclampsia. Polyuria is characterized by excessive urination, and in preeclampsia, the opposite may occur due to decreased kidney perfusion, resulting in oliguria (reduced urine output).
Correct Answer is D
Explanation
Choice A rationale :
Contractions every 3 to 4 minutes. Rationale: Contractions are a significant sign of labor. When the uterus contracts regularly and with increasing intensity, it indicates that the woman is in labor. However, contractions alone may not be enough to confirm active labor, as Braxton Hicks contractions can occur earlier in pregnancy, which are often irregular and less intense.
Choice B rationale
Pain just above the navel. Rationale: Pain above the navel is not a specific indicator of labor. In late pregnancy, the baby's head may engage in the pelvis, causing pressure and discomfort in the upper abdomen. However, this symptom alone does not confirm active labor and can be attributed to various other factors as well.
Choice C rationale
Amniotic fluid in the vaginal vault. Rationale: The presence of amniotic fluid in the vaginal vault, also known as rupture of membranes or "water breaking,”. is a significant sign that labor is likely to be in progress or imminent. When the amniotic sac ruptures, it releases the fluid that surrounds the baby in the uterus. This is a clear indication of active labor.
Choice D rationale
Cervical dilation. Rationale: Cervical dilation is one of the most reliable signs of active labor. As the uterus contracts, the cervix starts to dilate and efface (thin out) to allow the baby's passage through the birth canal. Measuring cervical dilation during a pelvic examination provides valuable information about the progress of labor.
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