SPAT Quiz #4

Order: Ampicillin 400 mg IVPB q 8 h x 7 days. Available: 500 mg/10 ml vials. How many milliliters of Clindamycin will be needed for each IVPB?

• 2 ml

• 2.5 ml

• 5 ml

• 8 ml

Answer explanation

500 mg/10 ml = 400 mg/x ml

x= 8 ml

Using the answer from #1, how many doses will the patient get during the entire 7 days?

• 3

• 7

• 14

• 21

Answer explanation

Dosing is q 8 h, 3 doses per day for 7 days = 21 total doses

Using the answer from #2, how many milliliters will be needed to prepare the drug to be mailed out to the patient for the 7-day therapy?

• 24 ml

• 64 ml

• 144 ml

• 168 ml

Answer explanation

8 ml per dose q 8 h= 24 ml per day x 7 days = 168 ml

Order D5LR infusing at 80 ml/hr, how many milliliters will be infused at the end of 24 hours?

• 1920 ml

• 2000 ml

• 3300 ml

• None of the above

Answer explanation

80 ml/hr x 24 = 1920 ml

What is the rate of infusion of Dopamine 250 mg in D5W 500 ml to be infused over 4 hours?

• 50 ml/hr

• 62.5 ml/hr

• 125 ml/hr

• None of the above

Answer explanation

500 divided by 4 hours = 125 ml/hr

What is the rate of infusion ml/hr for the following order: NS with 45,000 Units Heparin/liter . Infuse IV at 6000 units/hour?

• 100 ml/hr

• 133 ml/hr

• 134 ml/hr

• None of the above

Answer explanation

45,000 U/1000 ml = 45 U/ml

45U ml divided by 6000 x = 133.33 = 133 ml/hr.

Determine the drop factor using macro-drip tubing (10 gtts/ml) for 500 ml of D5W over 6 hours.

• 18.8 drops/min

• 13.8 drops/min

• 22.4 drop/min

• 34 drops/min

Answer explanation

500 ml/6 hours = 83.3 ml/hr

83.3 x drip factor 10 gtt = 833 gtt/hour; 833 gtt/60 min- 13.8 gtt/min

Normal adult dose is 1 gram. What would be the safe dose for a 10-month old child?

• 455 mg

• 0.07 mg

• 0.5 mg

• 66 mg

Answer explanation

Using Fried's rule 10months/150X1000mg = 66.6 rounding down to 66 mg

Normal adult dose is 1.5 grams. What would be the safe dose for a 24-month old child using Young's rule?

• 214 mg

• 240 mg

• 1 mg

• 3 mg

Answer explanation

Use Young's Rule: 2 years/2 +12 x 1500 mg= 214.2, round down to 214 mg

Normal adult dose is 2 grams. What would be the safe dose for a 20 kg child, using Clark's Rule?

• 0.3 mg

• 586 mg

• 267 mg

• 0.6 mg

Answer explanation

Use Clark's rule: 44/150 x 2000 mg= 586.6 round down to 586mg