Difficulty: Medium
Average Score: 93%
Simulated
A nurse is preparing to administer 40 mEq of potassium chloride in 45% sodium chloride (NaCl) 500 mL IV to infuse 10 mEq/hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct answer
125
Rationale
To determine the mL/hr rate, set up a proportion: (40 mEq / 500 mL) = (10 mEq / x mL). Cross-multiply: 40x = 5000, so x = 5000 / 40 = 125 mL/hr.