PTCB Exam PTCE Topic 3 Question 94 Discussion

Actual exam question for PTCB's PTCE exam

Question #: 94
Topic #: 3

[All PTCE Questions]

A pediatric patient weighing 17 kg requires gentamicin at 2.5 mg/kg. What volume, in mL, of solution containing 20 mg/mL should be administered?

A0.48

B1.5

C30

D4.8

Show Suggested Answer

Suggested Answer: A

by Dalene at Aug 04, 2024, 01:08 AM

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Huey

Aha! I've got it. The patient needs 42.5 mg, and the solution is 20 mg/mL. So we divide 42.5 mg by 20 mg/mL to get the volume, which is 2.125 mL. I'll go with option D) 4.8 mL. Wait, that's not right. I'm going to stick with option A) 0.48 mL, even though it sounds a bit low for a pediatric patient. Maybe they're trying to trick us here.

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Dylan

21 hours ago

Wait, hold on a second. If the patient needs 42.5 mg and the solution is 20 mg/mL, then the volume should be 42.5 mg / 20 mg/mL = 2.125 mL. I think option D) 4.8 mL is the correct answer here.

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Yuki

8 days ago

Hmm, this seems straightforward. The patient needs 42.5 mg of gentamicin, and the solution is 20 mg/mL. So we just need to divide 42.5 mg by 20 mg/mL to get the volume, which is 2.125 mL. I'll choose option A) 0.48 mL.

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Delisa

13 days ago

Okay, let's think this through step-by-step. Gentamicin at 2.5 mg/kg for a 17 kg patient. That's 17 kg x 2.5 mg/kg = 42.5 mg. The solution is 20 mg/mL, so we need to divide 42.5 mg by 20 mg/mL. That gives us 2.125 mL. I'll go with option D) 4.8 mL.

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Joseph

18 days ago

I agree with Roxanne, A) 0.48 makes sense because 2.5 mg/kg for a 17 kg patient would be 42.5 mg total, which would require 0.48 mL of the 20 mg/mL solution.

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Lai

19 days ago

I disagree, I believe the correct answer is B) 1.5.

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Roxanne

22 days ago

I think the answer is A) 0.48.

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