A nurse is preparing to administer potassium chloride 30 mEq PO daily. The amount available is potassium chloride 20 mEq/15mL. How many mL should the nurse administer?
(Round the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["23"]
To determine how many milliliters (mL) of potassium chloride the nurse should administer to provide 30 mEq, we can set up a proportion:
20 mEq is contained in 15 mL. So, to find out how many mL contain 30 mEq, we can set up the proportion:
20 mEq:15 mL=30 mEq:? mL20mEq:15mL=30mEq:xmL
Cross multiply:
20×?=15×3020×x=15×30
20?=45020x=450
Now, solve for ?x:
?=45020x=20450
?=22.5x=22.5
So, the nurse should administer approximately 22.5 mL of potassium chloride.
Rounded to the nearest whole number, this would be 23 mL.
Therefore, the nurse should administer 23 mL of potassium chloride.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B"}
Explanation
A. Minutes: This is too short a timeframe for warfarin's effect. It takes longer for the body's existing clotting factors to be depleted.
B. Days: This medication works by inhibiting the production of vitamin K-dependent clotting factors in the liver. As existing clotting factors are used up and new ones aren't produced as efficiently, it takes time for the anticoagulant effect to become significant.
C. Weeks: While the full effect might take some time (around 3-5 days), several weeks is an overestimation for most patients.
D. Hours: A few hours might show some initial effect, but it's not enough time for a substantial anticoagulant effect. It usually takes at least a day or two.
Correct Answer is ["2"]
Explanation
To determine how many tablets of digoxin 0.125 mg are needed to administer a total dose of 0.25 mg, divide the desired dose by the dose per tablet:
0.25 mg (desired dose) ÷ 0.125 mg (dose per tablet) = 2 tablets
Therefore, the nurse should administer 2 tablets of digoxin 0.125 mg to the client to achieve a total dose of 0.25 mg.
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