A client is to receive one liter of normal saline intravenously over six hours. The tubing delivers 15 drops per milliliter.
How many drops per minute should a nurse regulate the infusion to deliver?
42.
84.
100.
166.
The Correct Answer is B
To explain why, we need to use the formula for calculating the drip rate in drops per minute (dpm):
Volume of IV fluid (mL) x Drop Factor (drops/mL) / Time to run (h) x 60 (min/h) = Drip Rate (dpm)
In this question, the volume of IV fluid is one liter, which is equivalent to 1000 mL. The drop factor is 15 drops per mL, as given by the tubing.
The time to run is six hours, as ordered by the physician. Plugging these values into the formula, we get:
1000 mL x 15 drops/mL / 6 h x 60 min/h = 84 dpm
Therefore, the nurse should regulate the infusion to deliver 84 drops per minute.
Choice A is wrong because it gives a drip rate of 42 drops per minute, which is half of the correct answer.
This would result in delivering only 500 mL of normal saline in six hours, instead of one liter.
Choice C is wrong because it gives a drip rate of 100 drops per minute, which is more than the correct answer.
This would result in delivering 1.43 liters of normal saline in six hours, instead of one liter.
Choice D is wrong because it gives a drip rate of 166 drops per minute, which is almost double the correct answer.
This would result in delivering 1.99 liters of normal saline in six hours, instead of one liter.
Normal saline is a solution of 0.9% sodium chloride in water, which has the same osmolarity as blood plasma.
It is used to treat dehydration, shock, blood loss, and other conditions that require fluid replacement.
The normal range of sodium in blood is 135-145 mEq/L.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The client on Digitalis has a low potassium level of 3.0 mEq/L, below the normal range of 3.5-5.0 mEq/L. Low potassium levels can increase the risk of digitalis toxicity, which can cause nausea, abdominal discomfort, visual changes, and cardiac arrhythmias.
The nurse would instruct the client to eat foods high in potassium, such as cantaloupe, to prevent or correct hypokalemia.
Choice A. Asparagus is wrong because asparagus is a low-potassium food that contains only 202 mg of potassium per cup.
Eating asparagus would not help to raise the client’s potassium level.
Choice C. Blackberries are wrong because blackberries are also a low-potassium food that contains only 233 mg of potassium per cup.
Eating blackberries would not help to raise the client’s potassium level.
Choice D. Cucumbers is wrong because cucumbers are a very low-potassium food that contains only 76 mg of potassium per cup.
Eating cucumbers would not help to raise the client’s potassium level and may even lower it further.
Correct Answer is C
Explanation
This is because furosemide is a diuretic that makes you pee more and lose water and electrolytes such as potassium and sodium.
Therefore, you should avoid foods that are high in sodium or potassium, such as bananas, oranges, cranberries, and bagels with cream cheese.
You should also drink plenty of fluids to prevent dehydration.
Choice A is wrong because oatmeal with a banana, milk, and orange juice contains too much potassium, which can cause irregular heartbeat or muscle weakness when taking furosemide.
Choice B is wrong because blueberry muffins, cranberry juice, and herbal tea contain too much sodium and sugar, which can raise your blood pressure and worsen your heart failure.
Choice D is wrong because a bagel with low-fat cream cheese and decaffeinated coffee contains too much sodium and caffeine, which can cause fluid retention and increase your heart rate.
Normal ranges for potassium are 3.5 to 5.0 mmol/L and for sodium are 135 to 145 mmol/L.
You should monitor your electrolyte levels regularly when taking furosemide.
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