The healthcare provider prescribes magnesium sulfate 300 mg/hour IV. The IV bag is contains magnesium sulfate 4 grams in dextrose 5% in water (DW) 500 mL. How many mL/hour should the nurse set the infusion pump? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["37.5"]
Convert grams to milligrams: 4 grams = 4000 mg
Determine the concentration of magnesium sulfate in the solution: 4000 mg / 500 mL = 8 mg/mL
Calculate the volume needed to deliver 300 mg/hour:
300 mg/hour ÷ 8 mg/mL = 37.5 mL/hour
Therefore, the nurse should set the infusion pump to deliver 37.5 mL/hour.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Assess for hypoglycemia between meals: While monitoring for hypoglycemia is important, insulin lispro, being a rapid-acting insulin, primarily acts around meal times. Hypoglycemia is most likely to occur around the times when insulin lispro is active, which correlates with meal times rather than between meals.
B) Provide meals at the same time this insulin is given: Insulin lispro is a rapid-acting insulin designed to manage blood glucose levels around meal times. Administering insulin lispro immediately before or with meals helps match the insulin peak with the glucose from the meal, minimizing the risk of postprandial hyperglycemia or hypoglycemia.
C) Keep an oral liquid or glucose source available: Keeping a glucose source available is a good practice to quickly address hypoglycemia if it occurs. However, the most critical intervention is ensuring that insulin administration aligns with food intake to manage glucose levels effectively.
D) Check blood glucose levels every six hours: Checking blood glucose levels every six hours might not capture the fluctuations related to insulin lispro's rapid action. More frequent monitoring around meal times is necessary to adjust doses appropriately and prevent hyperglycemia or hypoglycemia.
Correct Answer is C
Explanation
A. Hematocrit 42% (0.42 volume fraction):
A hematocrit of 42% is within the normal reference range for males (42% to 52%). While it is important to monitor hematocrit levels, this finding alone does not indicate an immediate issue.
B. Hemoglobin 13 g/dL (8.07 mmol/L):
A hemoglobin level of 13 g/dL is slightly below the normal range for males (14 to 18 g/dL). However, it is not critically low and may not require immediate intervention without additional context or symptoms.
C. Positive guaiac of stool:
A positive guaiac test for stool indicates the presence of occult blood in the stool, which could suggest gastrointestinal bleeding. Given the client's history of heartburn, indigestion, and use of ibuprofen (a nonsteroidal anti-inflammatory drug that can cause gastrointestinal bleeding), this finding is concerning and should be reported immediately to the healthcare provider for further evaluation and management.
D. Gastric pH 2.0:
A gastric pH of 2.0 is within the normal range for gastric acid, as the normal pH of gastric acid typically ranges from 1.5 to 3.5. This finding is expected and does not indicate an immediate problem related to the client's symptoms.
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