Page 18 - Referance Guide For Pharmaceutical Calculations (Naplex, Fpgee and Ptce)

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3
t 1/2 = 0.07 x 10 12 + 22 = 34, the right most letter of this resultant
sum should match with the seventh number of the
t 1/2 = 70 days. DEA number.

201.(c) 10 grams AS 2332764

The amount of Amoxicillin in grams: 204.(c) 8.33 minutes.

= 250 x 200 = 10000 mg = 10 grams The time required to finish 250cc infusion:
5
= 250 = 500 seconds = 8.33 minutes
202.(d) 21 vials. 0.5

The total amount of Demerol required: 205.(c) Patient weight in kg = 110 = 50 kg
2.2
= 75mg x 4 x 7
= 2100 mg of Demerol The recommended adult dose of drug per day:

The number of vials of Demerol required: = 5 x 50
= 250 mg per day = 250 mg/24 hours
= 2100 = 21 vials = 41.66 mg/4 hours
100
206.(d) 571 calories.
203.(d) The correct DEA number can be calculated
by the following formula. Calories provided by dextrose:

1. The first letter should be A or B; and generally = 500 x 0.05 x 3.4
indicates “dispensing”. = 85 calories
2. The second letter should be the first initial of the Calories provided by amino acids:
last name of prescriber. (e.g. S for Dr. Sheghi, Rama)
= 300 x 0.03 x 4
3. The rest of the seven letters are numbers, and = 36 calories
can be verified by the following formula.
Calories provided by lipids:
4. Add the first, third and fifth numbers.
= 500 x 0.1 x 9
2 + 3 + 7 = 12 = 450 calories

5. Now add the second, fourth and sixth numbers of Total calories: 85 + 36 + 450 = 571 calories.
the DEA number and multiply by 2.
207.(d) 1073.82 mEqs.
3 + 2 + 6 = 11, and 11 x 2 = 22
Equivalent weight of KCl = 74.5 = 74.5 gm
6. Now, add the first, third and fifth numbers to the 1
resultant sum of the second, fourth and sixth sums.
1 equivalent weight of KCl = 74.5 gm
1 milliequivalent of KCl = 74.5 mg

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