A nurse is preparing to administer potassium chloride 20 mEq. The amount available is potassium chloride liquid 40 mEq/15 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["7.5"]
We can calculate the volume of potassium chloride solution to administer using the following steps:
Identify the prescribed dose: The nurse needs to administer 20 mEq of potassium chloride.
Identify the concentration of available solution: The potassium chloride liquid is available in a concentration of 40 mEq/15 mL. This means there are 40 milliequivalents (mEq) of potassium chloride in every 15 milliliters (mL) of the solution.
Set up a proportion to find the volume needed:
Desired dose (mEq) : Volume to administer (mL) = Concentration (mEq/mL)
Plug in the values:
20 mEq : Volume to administer (mL) = 40 mEq/15 mL
Solve for the volume:
To isolate the volume (mL), multiply both sides of the proportion by the volume unit (mL) and divide by the dose (mEq).
Volume to administer (mL) = (20 mEq) x (mL) / (40 mEq/15 mL)
We can simplify the calculation before dividing:
Volume to administer (mL) = (20 mEq x 15 mL) / 40 mEq
Volume to administer (mL) = 300 mL / 40 mEq
Volume to administer (mL) = 7.5 mL (round to one decimal place)
Therefore, the nurse should administer 7.5 mL of the potassium chloride solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) BP of 132/82 mm Hg: This blood pressure reading is within the normal range for most adults and does not typically indicate a need to withhold digoxin or report to the provider. Digoxin's primary concerns are related to heart rate and electrolyte levels rather than blood pressure.
B) Heart rate of 66/min: A heart rate of 66 beats per minute is within the normal range for adults. While digoxin is used to manage heart rate, particularly in atrial fibrillation, this heart rate does not indicate an immediate need to report to the provider or withhold the medication.
C) Digoxin level of 1.2 ng/mL: This digoxin level falls within the therapeutic range, which is typically 0.8 to 2.0 ng/mL for most patients. Therefore, this finding does not indicate digoxin toxicity or a need to report to the provider.
D) Potassium level of 3.0 mEq/L: A potassium level of 3.0 mEq/L is below the normal range (3.5-5.0 mEq/L) and indicates hypokalemia. Hypokalemia can increase the risk of digoxin toxicity, as low potassium levels can enhance digoxin's effects on the heart. Therefore, this finding is significant and should be reported to the provider to prevent potential adverse effects and complications.
Correct Answer is B
Explanation
A) "I take my alendronate at the same day every week with an 8-ounce glass of milk":
Taking alendronate with a full glass of plain water, not milk or any other beverage, is recommended to optimize absorption and minimize the risk of esophageal irritation. Using milk may interfere with the absorption of the medication.
B) "I sit up and read the morning paper after taking my alendronate,":
While it's important to remain upright (sitting or standing) for at least 30 minutes after taking alendronate to prevent esophageal irritation and optimize absorption, reading the morning paper doesn't necessarily ensure the client remains in an upright position. This statement indicates a need for further instruction regarding the importance of post-dose positioning.
C) "I will need to have a bone density test occasionally while taking this medication":
Monitoring bone density periodically is recommended while on alendronate to assess treatment effectiveness and bone health status. This statement shows understanding of the need for ongoing monitoring and does not require further instruction.
D) "I take my other pills at least 30 min after my alendronate,":
Taking other medications at least 30 minutes after alendronate helps to avoid interactions that may reduce its effectiveness. This statement demonstrates correct timing and understanding of medication administration instructions.
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