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 C
Explanation
Choice A: RBC count The red blood cell (RBC) count is not typically decreased by hemodialysis. Hemodialysis does not remove cells from the blood. However, patients with chronic kidney disease often have anemia, which is a low RBC count, due to a decrease in the production of erythropoietin by the kidneys. Erythropoietin is a hormone that stimulates the bone marrow to produce RBCs. Anemia in these patients is treated with erythropoiesis-stimulating agents, not dialysis.
Choice B: Protein Protein levels are not directly affected by hemodialysis. However, patients on hemodialysis may have lower protein levels due to dietary restrictions or protein loss during the treatment. It is important for patients to manage their protein intake to prevent malnutrition and maintain overall health.
Choice C: Potassium Potassium levels are expected to decrease following hemodialysis. Potassium is an electrolyte that is normally filtered out by the kidneys. In patients with kidney failure, potassium levels can build up in the blood and cause serious heart problems. Hemodialysis removes excess potassium from the blood, which helps to prevent complications such as cardiac arrhythmia. The normal range for serum potassium is 3.5 to 5.0 mmol/L. After a hemodialysis treatment, a nurse should expect to find a decrease in potassium levels in the laboratory data of a client. This is because hemodialysis effectively removes excess potassium, which can accumulate in the blood due to reduced kidney function. Maintaining proper potassium levels is crucial for preventing heart complications in patients with kidney failure.
Choice D: Calcium Calcium levels are not typically decreased by hemodialysis. In fact, calcium levels can be affected by the dialysate used during hemodialysis. Some dialysates contain calcium, and this can actually increase the patient’s blood calcium levels. Patients with kidney failure may also have secondary hyperparathyroidism, which affects calcium levels, and they may be treated with calcium supplements or vitamin D analogs to manage their calcium levels.
Correct Answer is B
Explanation
Choice A reason: A heart murmur is not a common finding in right-sided heart failure unless there is an associated valvular heart disease.
Choice B reason: Dependent edema is a classic sign of right-sided heart failure due to the accumulation of fluid in the tissues, particularly in the lower extremities.
Choice C reason: Chest pain is more commonly associated with left-sided heart failure or other cardiac conditions such as angina.
Choice D reason: Crackles in the lungs are typically found in left-sided heart failure due to pulmonary congestion, not right-sided heart failure.

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