1. Calculate the volume for insulin dose: - Dose: 22 units - Stock concentration: 100 units/1 mL - Volume to give: $$\frac{22 \text{ units}}{100 \text{ units/mL}} = 0.22 \text{ mL}$$ 2. Calculate mg of lidocaine: - Concentration: 2% means 2 g/100 mL = 20 mg/mL - Volume: 10 mL - Total mg: $$20 \text{ mg/mL} \times 10 \text{ mL} = 200 \text{ mg}$$ 3. Calculate volume for diclofenac dose: - Dose required: 50 mg - Stock: 75 mg/3 mL = 25 mg/mL - Volume to draw: $$\frac{50 \text{ mg}}{25 \text{ mg/mL}} = 2 \text{ mL}$$ 4. Calculate dopamine infusion rate: - Dose: 4 mcg/kg/min for 60 kg = $$4 \times 60 = 240 \text{ mcg/min}$$ - Convert to mg/min: $$240 \text{ mcg/min} = 0.24 \text{ mg/min}$$ - Stock: 200 mg/50 mL = 4 mg/mL - Volume per minute: $$\frac{0.24}{4} = 0.06 \text{ mL/min}$$ - Volume per hour: $$0.06 \times 60 = 3.6 \text{ mL/hour}$$ 5. Calculate total daily dose for drug B: - Dose: 40 mcg/kg/day for 75 kg = $$40 \times 75 = 3000 \text{ mcg/day} = 3 \text{ mg/day}$$ 6. Calculate single dose (one of three divided doses): - Total daily dose: 3 mg - Divided in 3 doses: $$\frac{3}{3} = 1 \text{ mg}$$ per dose 7. Calculate volume for adrenaline dose: - Dose: 500 mcg - Stock: 1 in 10,000 means 1 g/10,000 mL = 100 mcg/mL - Volume: $$\frac{500 \text{ mcg}}{100 \text{ mcg/mL}} = 5 \text{ mL}$$ 8. Calculate volume for folic acid: - Dose: 400 mcg = 0.4 mg - Stock: 2.5 mg/5 mL = 0.5 mg/mL - Volume: $$\frac{0.4}{0.5} = 0.8 \text{ mL}$$ 9. Calculate volume for lidocaine: - Dose: 3 mg/kg for 72 kg = $$3 \times 72 = 216 \text{ mg}$$ - Stock: 1% = 10 mg/mL - Volume: $$\frac{216}{10} = 21.6 \text{ mL}$$ 10. Calculate volume for digoxin: - Dose: 62.5 mcg - Stock: 500 mcg/2 mL = 250 mcg/mL - Volume: $$\frac{62.5}{250} = 0.25 \text{ mL}$$ 11. Calculate volume for hydrocortisone: - Dose: 150 mg - Stock: 100 mg/2 mL = 50 mg/mL - Volume: $$\frac{150}{50} = 3 \text{ mL}$$ 12. Calculate volume for heparin: - Dose: 3500 units - Stock: 5000 units/mL - Volume: $$\frac{3500}{5000} = 0.7 \text{ mL}$$ 13a. Calculate adrenaline dose for child: - Weight: 19 kg - Dose per kg: 400 mcg/kg - Dose: $$19 \times 400 = 7600 \text{ mcg} = 7.6 \text{ mg}$$ - Max dose: 5 mg, so dose = 5 mg 13b. Calculate volume of adrenaline: - Stock: 1 in 1000 means 1 g/1000 mL = 1 mg/mL - Volume: $$\frac{5 \text{ mg}}{1 \text{ mg/mL}} = 5 \text{ mL}$$ 14. Calculate aminophylline infusion rate: - Dose: 500 mcg/kg/hour for 65 kg = $$500 \times 65 = 32500 \text{ mcg/h} = 32.5 \text{ mg/h}$$ - Stock: 500 mg/500 mL = 1 mg/mL - Volume per hour: $$\frac{32.5}{1} = 32.5 \text{ mL/h}$$ Final answers: 1) 0.22 mL 2) 200 mg 3) 2 mL 4) 3.6 mL/hour 5) 3 mg/day 6) 1 mg per dose 7) 5 mL 8) 0.8 mL 9) 21.6 mL 10) 0.25 mL 11) 3 mL 12) 0.7 mL 13a) 5 mg 13b) 5 mL 14) 32.5 mL/hour