The prescription states: “Give drug D 0.5 mg/kg of body weight PO three times a day.” The client’s weight is 90 kg. Drug D is available from the pharmacy as 25 mg per 5 mL. How many mL will the client receive per 1 dose? (Use preceding zeros if necessary. Do not use trailing zeros. Round to the nearest tenth if necessary.)
The Correct Answer is ["9.0"]
Calculation and Answer
Step 1: Determine the total dose required per administration.
- Dose required = 0.5 mg/kg × 90 kg
- Dose required = 45 mg
Step 2: Determine the concentration of the drug.
- Concentration = 25 mg per 5 mL
Step 3: Calculate the volume needed to administer the required dose.
- Volume (mL) = Dose required ÷ Concentration
- Volume (mL) = 45 mg ÷ (25 mg ÷ 5 mL)
- Volume (mL) = 45 mg ÷ 5 mg/mL
- Volume (mL) = 9 mL
The client will receive 9.0 mL per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason:
Administering inhaler medications and increasing oxygen may be necessary if the client is experiencing respiratory distress. However, since the client is not currently reporting increased dyspnea, this intervention is not immediately required. The focus should be on addressing the client’s anxiety.
Choice B reason:
Notifying the physician and administering lorazepam may be appropriate if the client’s anxiety is severe and not manageable through non-pharmacological means. However, it is generally best to try comfort measures and non-pharmacological interventions first.
Choice C reason:
Dimming the lights and encouraging the client to take a nap can help reduce anxiety, but it may not be the most effective initial intervention. Providing direct comfort and reassurance is often more beneficial in addressing immediate anxiety.
Choice D reason:
Sitting with the client and providing comfort measures is the most appropriate intervention. This approach helps to alleviate anxiety through direct support and reassurance. Techniques such as deep breathing exercises, talking calmly, and providing a comforting presence can significantly reduce anxiety.
Correct Answer is ["0.5"]
Explanation
Step 1: Convert the prescribed dose from mcg to mg.
- 235 mcg ÷ 1000 = 0.235 mg
Step 2: Determine the strength of the available tablet.
- Available strength = 0.5 mg per tablet
Step 3: Calculate the number of tablets needed.
- Number of tablets = 0.235 mg ÷ 0.5 mg/tablet
Step 4: Perform the division.
- 0.235 ÷ 0.5 = 0.47
Step 5: Round the answer to the nearest tenth.
- 0.47 rounded to the nearest tenth = 0.5
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