dosage questions

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#1

1 gram of cefoxin sodium in 50 ml of D5W is to infuse over 30 minutes.

At what ate will you set the IV infusion pump?

#2

An adult weighs 162 pounds (73.63 kg)

The doctor orders Rocephin 25 mg/kg

How many milligrams will you administer?

Thanks for the help fellow nurses....I'm a nursing student

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Specializes in retired LTC.

We can HELP you but you need to do the first steps first. Tell us what you've done/think.

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I am not a nursing student but I can give you tips on how to solve them

#1..gram is the same thing as ml.

#2.. this is just a proportion stuff, there is something called cross multiply in math and chemistry, set it up and solve for the answer. As you can see from the previous post, you have to start first for them to help you.. I hope it helps

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Specializes in Trauma Surgical ICU.

What have you done OP to solve these very basic questions??

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Specializes in Emergency Medicine.
I am not a nursing student but I can give you tips on how to solve them #1..gram is the same thing as ml. #2.. this is just a proportion stuff there is something called cross multiply in math and chemistry, set it up and solve for the answer. As you can see from the previous post, you have to start first for them to help you.. I hope it helps[/quote']

1 gram is not the same thing as 1 mL.

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Seriously?..ok then what is it because I am damn sure it is. Unit of mass is grams and the unit of volume is ml and also 1 gram of water is equivalent to 1 ml..this is just a basic conversation in chemistry. Exceptions to basic conversion is when you are only given the conversion in the question yu want to solve..correct me if I am wrong, I am still a pre-nursing student but I am damn sure am right

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Specializes in Complex pedi to LTC/SA & now a manager.
Seriously?..ok then what is it because I am damn sure it is. Unit of mass is grams and the unit of volume is ml and also 1 gram of water is equivalent to 1 ml..this is just a basic conversation in chemistry. Exceptions to basic conversion is when you are only given the conversion in the question yu want to solve..correct me if I am wrong I am still a pre-nursing student but I am damn sure am right[/quote']

No, you are not correct...the densityof water is 1g/mL. Not all substances have the same density especially a solution. 1g does not equal 1mL except for distilled water.

In this case the solution has 1 g drug in 50mL solution. So 1g = 50mL in this problem. The answer needs to be a rate of volume (mL) per hour.

1g/50 mL needs to infuse over 30 min so the pump rate would be __mL over 60 min. As IV pumps are generally set in mL/hr

Or 50mL per 30 min = _____mL per hour

(50mL/30 min = ____mL/hr). Rate is mL/hr

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Specializes in med-surg.

......

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I know that the conversion for this question is 1g=50ml but thanks for the pther clarification.. I learned something from this tho thank you

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Specializes in Neuro, Telemetry.
Seriously?..ok then what is it because I am damn sure it is. Unit of mass is grams and the unit of volume is ml and also 1 gram of water is equivalent to 1 ml..this is just a basic conversation in chemistry. Exceptions to basic conversion is when you are only given the conversion in the question yu want to solve..correct me if I am wrong, I am still a pre-nursing student but I am damn sure am right

In most cases 1g is not 1 mL. But in any case, that is beside the point since it will not really help in these problems. . Op, I assume you have learned dimensional analysis in solving med math problems, or at least I hope you have. Start the equation with what you are looking for and then build on it from there. Show what work you have done, or post what you think the equation and answer is, and then everyone can help you.

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Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma.
Seriously?..ok then what is it because I am damn sure it is. Unit of mass is grams and the unit of volume is ml and also 1 gram of water is equivalent to 1 ml..this is just a basic conversation in chemistry. Exceptions to basic conversion is when you are only given the conversion in the question yu want to solve..correct me if I am wrong, I am still a pre-nursing student but I am damn sure am right
You are right and wrong.

Since the first is a measure of volume and the second is weight, they are not equivalent. Long answer: It depends on the substance being measured. With water, 1ml of water actually weighs about 1g....not equal to a gram. Other substances, no matter if they are solid or liquid, will weigh less or more.

kayfactor I know that the conversion for this question is 1g=50ml but thanks for the other clarification.. I learned something from this tho thank you

Which has nothing what so ever to do with the problem at hand.
#1

1 gram of cefoxin sodium in 50 ml of D5W is to infuse over 30 minutes.

At what rate will you set the IV infusion pump?

There just happens to be 1gram of a drug in 50mls of a fluid/D5W.

This question is about what to set the pump at to infuse 50mls of fluid over 30mins.

[TABLE=class: formula]

[TR]

[TD][/TD]

[TD]Formula:

[TABLE=class: formula]

[TR]

[TD] [TABLE=class: fraction]

[TR]

[TD=class: numerator] Volume (mL)[/TD]

[/TR]

[TR]

[TD=class: denominator] Time (min)[/TD]

[/TR]

[/TABLE]

[/TD]

[TD] x Drop Factor (gtts/mL) = Y (Flow Rate in gtts/min)[/TD]

[/TR]

[/TABLE]

[/TD]

[/TR]

[/TABLE]

If you had 2grams of a drug in 50mls/D5W....you would still have to infuse 50mls of fluid over 30 mins.

So for this problem....

50mls x 60gtts/1ml = _____

30min

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Seriously?..ok then what is it because I am damn sure it is. Unit of mass is grams and the unit of volume is ml and also 1 gram of water is equivalent to 1 ml..this is just a basic conversation in chemistry. Exceptions to basic conversion is when you are only given the conversion in the question yu want to solve..correct me if I am wrong, I am still a pre-nursing student but I am damn sure am right

You are damn sure right only as far as it applies to the mass of water. I want to tell you that if you think 0.4mg of a drug can't be found in 2cc of liquid you are in for a world of confusion.

Drugs in solution are supplied in X gram or X mg or Xmcg/cc, generally speaking, and if they aren't supplied that way (as in, they come in something labeled like "350mg/5cc") you have to figure out how many mg/cc there is in that solution before you can solve any given problem.

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