Posology

Question 1

***percent concentration***

Answer 1

***weight of drug in g/100ml solution***

Question 2

how to convert from percent concentration to mg/ml?

Answer 2

% x 10

Question 3

how to convert from mg/ml to percent concentration?

Answer 3

mg/ml ÷ 10

Question 4

how is a solution different from a suspension?

Answer 4

-the solute remains evenly distributed in the diluent -all parts of the solution contain equal parts of the solute

Question 5

suspension

Answer 5

contain fine particles of insoluble drug suspended or dispersed in a liquid vehicle must be thoroughly mixed to disperse the particles throughout the liquid vehicle

Question 6

drug reconstitution

Answer 6

add diluent (liquid vehicle) to a drug in powder form to make a liquid

Question 7

define percent solution

Answer 7

weight of drug in g (x100) / volume of solution in ml

Question 8

Explain ratios for percent solutions

Answer 8

5% solutions means 5 parts drug per 100 parts solution. YOU MUST REDUCE TO THE LCF BEFORE YOU CAN TURN INTO RATIO. So: 5/100 = 1/20 or 1:20 solution

Question 9

Convert from ratio to percent solution

Answer 9

divide first number by second number multiply by 100 5/20 = 0.25 0.25 x 100= 25%

Question 10

In what ratio is epinephrine solution generally supplied in? Name 2

Answer 10

Generally supplied as 1:10,000 or 1:1,000 solution

Question 11

Remember: in proportions, -numerator must match numerator and -denominator must match denominator so that units can cancel

Answer 11

:)

Question 12

**************define dilution explain the ratio 1:10 explain what makes up total volume**************

Answer 12

ratio of solute mixed with a diluent 1 part solute 9 parts diluent. overall solution has 10 parts TOTAL VOLUME = SOLUTE + DILUENT

Question 13

3 STEPS OF DILUTION CALC

Answer 13

1. How many mL of original concentration? 2. What’s the total volume after the dilution? 3. Difference between total volume and solute gives you diluent volume

Question 14

Dilution formula?

Answer 14

V1C1 = V2C2 V2 = volume of resulting solution, includes solute and diluent

Question 15

What is the formula to calculate flow rate in gtt/min?

Answer 15