A nurse is preparing to administer a 2 mg IV bolus of morphine sulfate. Morphine sulfate is available in a concentration of 10 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.2"]
- Step 1: Identify the required dose in milligrams (mg). The nurse is scheduled to administer 2 mg of morphine sulfate.
- Step 2: Identify the concentration of the available solution. The available solution contains 10 mg of morphine sulfate per 1 mL.
- Step 3: Calculate the volume of solution needed to deliver the required dose. We can set up a proportion to solve for this:
- 10 mg is to 1 mL as 2 mg is to X mL.
- In other words, 10 mg : 1 mL = 2 mg : X mL.
- Step 4: Solve for X using cross-multiplication and division:
- Cross-multiplication gives us: 10 mg × X mL = 2 mg × 1 mL.
- Simplifying this gives us: 10X = 2.
- Dividing both sides by 10 gives us: X = 2 ÷ 10.
- Calculating the division gives us: X = 0.2.
So, the nurse should administer 0.2 mL of the morphine sulfate solution per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A. An embolic stroke is caused by an embolus, often a blood clot, that travels to the brain from another part of the body. It does not typically present with a sudden, severe headache.
Choice B. A thrombotic stroke occurs when a blood clot forms inside one of the brain's arteries. While it can cause a headache, it is not usually characterized by a sudden, severe headache.
Choice C. A transient ischemic attack (TIA) is often called a mini-stroke and symptoms are temporary. A sudden, severe headache is more indicative of a hemorrhagic stroke.
Choice D. A hemorrhagic stroke, which involves bleeding within the brain, is most likely to cause a sudden, severe headache, and can lead to seizures and changes in consciousness.
Correct Answer is C
Explanation
Choice A reason: A fractured femur, while a serious injury, does not inherently contraindicate the use of lipid emulsions. These patients may require additional nutrition if they are unable to eat adequately by mouth, and lipid emulsions can be part of their parenteral nutrition regimen if needed.
Choice B reason: Severe anorexia nervosa is a condition that can lead to malnutrition and may necessitate the use of parenteral nutrition, including lipid emulsions, to provide essential nutrients. However, care must be taken to avoid refeeding syndrome, a potentially fatal condition that can occur when malnourished patients begin to refeed too quickly.
Choice C reason: Gastrointestinal obstruction is a condition that could be exacerbated by the administration of lipid emulsions. In cases of obstruction, enteral or parenteral nutrition may need to be carefully managed or avoided until the obstruction is resolved to prevent further complications. While lipid emulsions are a valuable component of parenteral nutrition, their use must be carefully considered in the context of the patient’s overall clinical condition. In the case of gastrointestinal obstruction, the nurse would be most concerned about the prescription of a lipid emulsion due to the potential for exacerbating the obstruction and complicating the patient’s condition.
Choice D reason: Chronic diarrhea and vomiting can lead to dehydration and electrolyte imbalances, but they do not directly contraindicate the use of lipid emulsions. However, the underlying cause of these symptoms should be addressed, and fluid and electrolyte balance should be carefully monitored.
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