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: Lactated Ringer’s
Lactated Ringer’s solution is an isotonic crystalloid that contains electrolytes similar to those found in blood plasma. While it is commonly used for fluid resuscitation, it does not provide a significant source of calories and therefore is not the best option to temporarily replace TPN.
Choice B: 0.9% sodium chloride
0.9% sodium chloride, also known as normal saline, is an isotonic solution that is used to expand volume and correct electrolyte imbalances. Like Lactated Ringer’s, it does not contain a significant amount of calories and is not suitable as a temporary replacement for TPN.
Choice C: 3% sodium chloride
3% sodium chloride is a hypertonic saline solution used in controlled settings to treat specific conditions such as hyponatremia. Due to its high concentration of sodium, it is not appropriate for routine fluid replacement and does not provide calories.
Choice D: Dextrose 10% in water
D10W is the preferred choice in this scenario because it provides a source of glucose, which can help maintain blood glucose levels when TPN is not available. It is important to monitor the patient’s blood glucose levels while infusing D10W to ensure they remain within a safe range. When a TPN container is delayed, Dextrose 10% in water is the most appropriate temporary solution to infuse until the next container becomes available, as it provides necessary calories in the form of glucose to the patient.
Correct Answer is ["A","B","C","D","E","F"]
Explanation
Choice A reason:Profuse vomiting with a fecal odor can occur in large bowel obstructions due to the backward flow of bowel contents.
Choice B reason:Epigastric abdominal distention is a common finding in bowel obstructions due to the accumulation of gas and fluids.
Choice C reason:Intermittent abdominal cramping results from the bowel's attempt to push contents through the obstructed area.
Choice D reason:Ribbon-like stools or diarrhea may occur if there is a partial obstruction allowing some contents to pass.
Choice E reason:Metabolic acidosis can develop due to the accumulation of lactic acid from tissue hypoxia and decreased perfusion.
Choice F reason:Severe fluid and electrolyte imbalance can result from vomiting and the inability to absorb fluids and nutrients properly.
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