## 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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