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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?

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Suggested Answer: A

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

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Lasandra
26 days ago
I'm just going to guess and hope for the best. This math stuff is not my strong suit. Option C) 30 mL sounds good. What could go wrong with an extra-large dose of gentamicin, right? *nervous laughter*
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Corazon
13 days ago
User 1: I think you should double check the calculation before administering the medication.
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Huey
1 months ago
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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Ira
15 days ago
Let's go with A) 0.48 mL then.
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Sharee
19 days ago
I agree, it seems like the most accurate choice.
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Nan
20 days ago
I think the correct answer is A) 0.48 mL.
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Dylan
1 months 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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Mona
15 days ago
No, I believe it's B) 1.5 mL.
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Audria
26 days ago
I think the correct answer is A) 0.48 mL.
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Yuki
1 months 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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Rebbeca
25 days ago
Oh, I see. Thanks for pointing that out. I'll go with option B) 1.5 mL then.
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Ressie
29 days ago
I think you made a mistake in your calculation. The correct answer is B) 1.5 mL.
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Delisa
2 months 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
2 months 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
2 months ago
I disagree, I believe the correct answer is B) 1.5.
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Roxanne
2 months ago
I think the answer is A) 0.48.
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