Answers
ANSWER.
1) Calculation of number of tablet required.
Ordered dose = ASA grain X q4hr.
1 grain = 65 mg.
X = 10 grains.
So
Ordered dose = 65 * 10
= 650 mg.
Available dose = 300 mg /tab.
Number of tablet required = Ordered dose/Available dose.
= 650 / 300
= 2.16
= 2 tablet and 0.16 mg of one tablet.
2) Calculation of amount(ml) of drug administered.
Formula = Desired dose/Dose in hand * Quantity.
Here
Desired dose(D) = 8 mg.
Dose in hand (H) = 20 mg.
Quantity (Q) = 2 ml.
As per above formula
Amount(ml) of drug required = D/H * Q
= 8/20 * 2
= 0.4 * 2
= 0.8 ml.
3) Calculation of amount(ml) of drug administered.
Formula = Desired dose/Dose in hand * Quantity.
Here
Desired dose (D) = 50 mg.
Dose in hand (H) = 250 mg.
Quantity(Q) = 10 ml.
As per above formula
Amount(ml) of drug required = D/H * Q
= 50/250 * 10
= 0.2 * 10
= 2 ml.
4) Calculation flow rate.
Flow rate(gtt/min) = Volume(ml) /Time(min) * Drop factor (gtt/ml).
Here
Volume(ml) = 1500 ml (1.5L).
Time(min) = 720 min.
Drop factor(gtt/ml) = 20 gtt/ml.
As per above formula
Flow rate(gtt/min) = 1500 / 720 * 20
= 2.08 * 20
= 41.6 gtt/min.
5) Calculation of volume(ml) of drug required.
Formula = Desired dose/Dose in hand * Quantity.
Here
Desired dose (D) = 300000 U.
Dose in hand (H) = 600000 U.
Quantity(Q) = 1 ml.
As per above formula
Volume(ml) of drug required = D/H * Q
= 300000/600000 * 1
= 0.5 * 1
= 0.5 ml.
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