Pharmaceutical Calculations Exam 1

Question 1

What is pharmaceutical calculation

Answer 1

Involves the application of fundamental mathematical principles in the preparation, safe handling, and effective utilization of medications

Question 2

Mistakes are serious

Answer 2

Remember your responsibilities when you calculate and give a dose

Know how to calculate and be accurate

Question 3

E-Prescribing

Answer 3

Prescribers write and send prescriptions to a participating pharmacy electronically instead of using handwritten or faxed notes or calling in prescriptions

Question 4

Iowa HF 2377 law

Answer 4

Beginning January 1st, 2020, Iowa mandates the electronic transmission of all prescriptions

Exemptions:
Nursing homes, long-term care facilities
Dispensed by VA
Compounded preparations

Question 5

Specific Gravity

Answer 5

Water volume/actual volume

17 g material added to 180 ml water gives 195.6 ml of solution

Specific gravity = 197/195.6 = 1.007

Question 6

Apparent Density

Answer 6

Small part of problem density

17 g of material + 180 ml water = 195.6 ml total

17 / 15.6 = 1.09

Question 7

Buffer equations for weak acid

Answer 7

HA <-Ka-> H+ + A-
Ka = (H+)(A-)/(HA)
pKa = -log((H+)(A-)/(HA))
pKa = pH - log(A-)/(HA)
pH = pKa + log(A-)/(HA)