You need to give 250 micrograms of adrenaline, and you have a 1ml ampoule of 1:1000 adrenaline. how many ml do you want ?

To determine the number of milliliters (ml) of 1:1000 adrenaline needed to administer 250 micrograms, we can use the concept of ratios and proportions.

First, we need to understand what a 1:1000 adrenaline concentration means. It means that for every 1 part of adrenaline, there are 1000 parts of the solution. In other words, in 1 ml of the solution, there is 1 mg (milligram) of adrenaline.

To convert micrograms (μg) to milligrams (mg), we divide the number of micrograms by 1000. In this case, we have 250 micrograms, which is equal to 0.25 milligrams (250/1000).

Now, we need to find out how many milliliters of the 1:1000 adrenaline solution contain 0.25 milligrams of adrenaline.

We can set up a proportion:

1 ml / 1 mg = x ml / 0.25 mg

Cross-multiplying, we get:

1 ml * 0.25 mg = x ml * 1 mg

0.25 ml = x ml

Therefore, you will need 0.25 ml of the 1:1000 adrenaline solution to administer 250 micrograms of adrenaline.