Today we will discuss how to calculate the quantity of potassium to be added in the maintenance fluid i.e. the amount of potassium required for our body.
2 Things to know before calculation of potassium requirement –
-Potassium requirement of body is 2 mEq / kg bodyweight.
-1 ml KCl is equal to 2 mEq of K+
Example calculation using the above 2 points :
What will be the k+ requirement of a 10kg child.
Using the requirements formula above the child will need 10×20= 20 mEq
As discussed above 1 ml KCl is equal to 2 mEq of K+ ; so 20 mEq K+ will be equal to 10 ml of KCl.
Some people use the following way to calculate:
When you are planning to add k+ in maintenance fluid. Divide the required maintenance fluid by 100 and it will give you the required k+ in ml. The maintenance fluid requirement for a 10 kg child will be 10 x 100 = 1000 ml. So, the amount of K+ to add in it will be 1000/100 = 10 ml.
PS- Information in this post may not be free of error. For correct information refer to genuine resources.