A patient weighing 40kg is to receive 2mEq of NaCl per kg of body weight. How ma

Question

A patient weighing 40kg is to receive 2mEq of NaCl per kg of body weight. How many milliliters of normal saline solution (0.154M) should be administered?
The posted answer is 519mL. I just can’t figure out how to get to that answer. A patient weighing 40kg is to receive 2mEq of NaCl per kg of body weight. How many milliliters of normal saline solution (0.154M) should be administered?
The posted answer is 519mL. I just can’t figure out how to get to that answer.
The posted answer is 519mL. I just can’t figure out how to get to that answer.

Explanation / Answer

Molecular weight of Nacl is 58.5

Formula to solve this eqation is :-

mg = mEq × atomic , molecular or formula weight / valence

Total mEq required= 40 ×2 = 80 mEq

mg= 80×58.5/1(valence)

mg= 80×58.5 =4680

0.9g ______________ 100 ml

1g_________________100/0.9 = 111.1(approx)

To convert in ml

4680/1000=4.680 ml

Now, 4.680×111.1= 519.9 ml solution should be administered.

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