Dosage Calculations Practice Questions And Answers 100% Verified.

Dosage Calculations Practice Questions And Answers 100% Verified. Order: Biaxin 200 mg p.o. q 12 h for a child who weighs 45 lbs. Have: Biaxin 125 mg per 5 mL Biaxin label states 15 mg/kg/day in two equal doses. Is this dosage safe? - correct answer. 1. Convert lbs to kgs. 45lbs = 20.5 kg 2. Calculate the recommended dose per day. A child weighing 20.5 kg can have 307.5 mg PER DAY. So, divide 307.5 by 2 to get a single dose. So, the maximum single dose is 153.75 mg. 3. NO, the ordered dose is not safe. The doctor ordered 200 mg which is more than 153.75 mg. How many mcg in a mg? - correct answer. 1000 Order: D5LR 1250 mL IV over 8 hours. What is the infusion rate in mL/h? - correct answer. Answer: 156 mL/h Divide 1250 by 8 156.25 = 156 Order: Amoxil 200 mg q 8 h Have: 50 mg/ml Label: 20 to 40 mg/kg/day in divided doses every 8 hours. The patient weighs 10 kg. Is this order safe? - correct answer. 1. First, calculate the minimum and maximum dose per day. The minimum amount would be 200 mg. (20 x 10) The maximum amount would be 400 mg. (40 x 10) 2. Now, since the dose is given every 8 hours, divide the minimum and maximum by 3, since 3 doses can be given in one day (24 hours). The minimum single dose is 66.7 mg, and the maximum single dose is 133.3 mg. 3. NO, the ordered dose is not safe. The doctor ordered 200 mg for a single dose which is more than the maximum allowed single dose of 133.3 mg. How many mL in a teaspoon (tsp)? - correct answer. 5 How many grams are in a kilogram? - correct answer. 1000 How many teaspoons are in a tablespoon? - correct answer. 3 How many ounces are in a pound? - correct answer. 16 How many pounds are in a kilogram? - correct answer. 2.2 Convert 21.3 kg to lbs. - correct answer. 46.86 Tridil is infusing at 15 mL/hr on an infusion pump. The drug is mixed 50 mg in 500 mL DsW. How many mcg/min is the patient receiving? - correct answer. Answer: 25 mcg/min First, convert the 50 mg to mcg. 50 mg = 50,000 mcg Now, how many mcg is in 1 mL? 50,000 mcg/500 mL = 100 mcg/mL Now, how many mcg/hr is the pt receiving? 100 mcg x 15 mL = 1,500 mcg/hr So, 1500 mcg/60 min = 25 mcg/min How many mL in a tablespoon (T or tbs)? - correct answer. 15 How many mL in one ounce? - correct answer. 30 Convert 0.3 g to kg. - correct answer. 300 How many ounces in a cup? - correct answer. 8 How many mL in a cup? - correct answer. 240 Convert 22.2 kg to lbs. - correct answer. 48.84 lbs Convert 89 kg to lbs. - correct answer. 195.8 Order: D5W IV at 125 mL/h Drop factor: 10 gtt/mL Calculate flow rate in gtt/min. - correct answer. Answer: 21 gtt/min (volume in mL/time in min) x drop factor (125/60) x 10 2.08 x 10 = 20.8 = 21 Convert 2250 g to kg. - correct answer. 2.25 = 2.3 A child weighs 10 lb 2 oz. What is their weight in kg? - correct answer. 1. First, convert the 2 oz to lbs. 2 oz is 0.1 lbs. This gives you 10.1 lbs. 2. Now convert 10.1 lbs to kg. 3. Answer: 4.59 = 4.6 kg Convert 8 lbs 4 oz to kg. - correct answer. 3.8 kg You are caring for a patient at home who must take magnesium hydroxide/aluminum hydroxide (Maalox) 30 mL PO. How many tbsp will you instruct the patient to take? - correct answer. 2 A patient has a bottle of warfarin (Coumadin) 5 mg tablets at home. After his most recent international normalized ratio (INR), the doctor calls and tells him to take 7.5 mg/day. How many tablets (scored) should the patient take? - correct answer. 1.5 If your IV bag says 5% dextrose solution, what does the 5% represent? - correct answer. There are 5 g of dextrose per 100 ml in the bag. Order: NS 0.9% 250 mL IV over the next 4 hours How many mL per hour will you infuse? - correct answer. Answer: 63 mL/h