Difficulty: Medium
Average Score: 82%
Simulated
A nurse is preparing to administer gentamicin 2 mg/kg IV to a client who weighs 20 lb. How many mg should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct answer
18
Rationale
The correct answer is 18 mg. To calculate: 20 lb * 2 mg/kg = 40 mg. Since the question asks for the nearest whole number, and 40 is closer to 18 than 19, the nurse should administer 18 mg.
Other choices are incorrect because:
A: 15 mg - This is not the nearest whole number to the calculated dose.
B: 20 mg - This is higher than the calculated dose.
C: 25 mg - This is higher than the calculated dose.
D: 30 mg - This is much higher than the calculated dose.
E: 35 mg - This is significantly higher than the calculated dose.
F: 10 mg - This is lower than the calculated dose.
G: 5 mg - This is much lower than the calculated dose.
Other choices are incorrect because:
A: 15 mg - This is not the nearest whole number to the calculated dose.
B: 20 mg - This is higher than the calculated dose.
C: 25 mg - This is higher than the calculated dose.
D: 30 mg - This is much higher than the calculated dose.
E: 35 mg - This is significantly higher than the calculated dose.
F: 10 mg - This is lower than the calculated dose.
G: 5 mg - This is much lower than the calculated dose.