A nurse is preparing to administer gentamicin to a child who weighs 44 lb. The provider prescribes 6 mg/kg/day IV to be administered in three equal doses. Available is gentamicin 40 mg/mL. How many mL should the nurse administer with each dose?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1"]
Step 1: Convert the child's weight from pounds to kilograms.
44 pounds / 2.2 pounds/kg = 20 kg
Step 2: Calculate the child's total daily dose of gentamicin.
20 kg * 6 mg/kg/day = 120 mg/day
Step 3: Divide the child's total daily dose of gentamicin by the number of doses per day.
120 mg / 3 doses/day = 40 mg/dose
Step 4: Calculate the volume of gentamicin to be administered with each dose.
40 mg / 40 mg/mL = 1 mL/dose
Step 5: Round the answer to the nearest whole number and add a leading zero if necessary.
1 mL/dose = 1 mL/dose
Answer: 1 mL with each dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Explanation
Choice A rationale:
Increased temperature is not a direct indication of naloxone’s effectiveness. Naloxone works by reversing the effects of opioids, which do not typically include fever.
Choice B rationale:
While naloxone can cause an abrupt withdrawal in opioid-dependent individuals, leading to symptoms such as hypertension, it does not typically decrease blood pressure in opioid overdose cases.
Choice C rationale:
Naloxone works by reversing the life-threatening depression of the central nervous system and respiratory system caused by an opioid overdose. Therefore, an increased respiratory rate after administration would indicate that the medication is effective.
Choice D rationale:
Naloxone reverses the effects of opioids, including pain relief. Therefore, a report of decreased pain would not indicate that the medication is effective.
Correct Answer is C
Explanation
Choice Arationale:
The statement about taking the medication with food is incorrect. Nitroglycerin sublingual tablets should not be taken with food. They work much faster when absorbed through the lining of the mouth.
Choice B rationale:
The statement that the medication can slow the heart rate is incorrect. Nitroglycerin does not slow the heart rate. In fact, it can cause a reflex tachycardia, where the heart rate increases.
Choice C rationale:
The statement that the effects of the medication should be felt within 5 minutes is correct. This indicates an understanding of the instructions.
Choice Drationale:
Taking the medication every 10 minutes until the pain goes away is incorrect. Nitroglycerin sublingual tablets usually give relief in 1 to 5 minutes. However, if the pain is not relieved, a second tablet can be taken 5 minutes after the first tablet. If the pain continues for another 5 minutes, a third tablet may be used. Taking the medication every 10 minutes could lead to an overdose.
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