Adulting with Meds
Convert
80 kg -> lbs
80 lbs -> kg
176 lbs
36.4 kg
Pt is 5 y/o and weighs 20 kg. What is the amoxicillin dose (45 mg/kg/day in divided doses every 8 hours)?
20 kg x 45 mg/kg/day -> 900 mg
900 mg / 3 times daily -> 300 mg per dose
Pt receives 2.5 L of IV solution over 5 hours. What is the flow rate in mL/hr?
2500 mL / 5 hours = 500 mL/hr
What is the ratio strength of a solution that contains 5 grams of drug in 500 mL of solution?
Express your answer as 1:x.
5 g / 500 mL = 0.01 g/mL
Ratio strength = 1 : (1 / 0.01) = 1 : 100
Calculate the Cost+Markup+Dispensing Fee for the following:
Cost = 45.34 per inhaler
Markup = 30%
Dispensing fee = $4.89
Prescription calls for 3 inhalers
Selling Price = (45.35x3) + ((45.34x3)x30%) + 4.89
$181.72
Pt weighs 150 kg and is ordered a medication that is 10 mg/kg once daily. What is the daily dose (mg)?
1500 mg daily
Pt weight 25 kg and the adult dose of a medication is 200 mg. I used Clark's rule and got the following child dose 33.3 mg. What did I do wrong?
Used kg instead of lbs. The correct dose is 73.3 mg
How much Normal Saline (NS) is needed to run 15 hours at 200 mL/hr?
3000 mL or 3 L
An order for an injection of 4mg of epinephrine is received. The pharmacist has drawn up the appropriate volume of 1:100 epinephrine into a syringe. How much should he have used?
1:100 = 1g/100mL or 10mg/mL
Volume (mL)=Dose (mg) / Concentration (mg/mL)
Answer:0.4 mL
Calculate the Cost+Markup+Dispensing Fee for the following:
Cost = 158.57 per 1000 tablets
Markup = 47%
Dispensing fee = $3.00
Prescription calls for 90 tablets
Selling Price = (14.27) + (14.27x47%) + 3.00
$23.98
Pt weighs 264 lbs and is ordered a medication that is 20 mg/kg. That dose is split into twice daily. What is the dose per administration?
264/2.2 = 120 kg
2400 mg / 2 = 1200 mg per dose
Pts age is 12 and weighs 50 kg. He is ordered a medication that a pediatric dose is not available. Use Young's rule to calculate their dose based on the adult dose of 500 mg.
Pt dose 250 mg
A medication is ordered to be administered at 175 mL/hr. The hospital administration set is calibrated to deliver 15 gtts/mL. What is the gtts/min that the nurse should administer?
175 mL/hr / 60 min = 2.92 mL/min
2.92 mL/min x 15 gtts/mL = 43.8 gtts/min ->
44 gtts/min
Convert 1:200 ratio strength to mg/mL.
1:200 => 1 g / 200 mL
1 g = 1000 mg
1000 mg / 200 mL = 5 mg/mL
Calculate the Selling Price utilizing the following:
(AWP) +/- (AWP x %) + Dispensing Fee
A third party payer contracts a dispensing fee of $6.00 and discounts the AWP by 7%. The order for the prescription is 20 tablets of a drug with an AWP of $250 for 60 tablets.
(AWP) +/- (AWP x %) + Dispensing Fee
(83.33) - (83.33x 7%) + 6
Selling Price = $83.50
Pt weighs 125 lbs and is ordered an oral suspension 12.5 mg/kg BID. What volume of medication should be administered per dose if the concentration is 50 mg/mL?
125 lbs -> 56.8 kg
56.8 kg x 12.5 mg/kg -> 710 mg
710 mg / 50 mg/mL -> 14.2 mL
Using Clark's Rule calculate the pediatric dose:
adult dose is 750 mg, patient is 10 y/o and weighs 95 lbs
Dose = 475 mg
600 mg of jenitenjamolol is diluted in 1000 mL NS. The order states 600 mg will be administered at 75 mg/hr. We have an administration set calibrated to 60 gtts. Calculate the mL/min and gtts/min.
600mg/1000mL = 75 mg/x
x= 125 ml/hr
125 mL/hr x 60 min/1hr = 2.1 mL/min
2.1mL/min x 60 gtts/mL = 126 gtts/min
The physician orders 800 mL of a 1:1000 solution of KMnO4. How much KMnO4 is required?
1000 mL / 1 g=800 mL / x g
x=0.8g or 800 mg of KMnO4
Calculate the Cost+Markup+Dispensing Fee for the following:
Cost = $3000 per 90 tablets
Markup = 20%
Dispensing fee = $1.50
Prescription calls for 14 tablets
A physician orders a dopamine drip at a rate of 5 mcg/kg/min for a patient weighing 70 kg. The concentration of the dopamine solution is 400 mg in 250 mL of D5W. Using a microdrip set (60 gtt/mL), what is the drip rate in gtts/min?
350 mcg/min to 0.35 mg/min
0.35 mg/min -> 0.21875 mL/min
0.21875 mL/min * 60 gtt/mL= 13.125 gtts/min
A 5-year-old child weighing 40 pounds needs a medication with an adult dose of 500 mg. Calculate the child's dose using both Young's and Clark's Rule.
Young's:
Child's dose ≈ 147.06 mg
Clark's:
Child's dose ≈ 133.33 mg
Pencillin G 4,000,000 units are added to a 100 mL bag of NS for a total volume of 108 mL. The order is to be administered in 30 minutes. What is the flow rate in mL/hr and gtt/min? (set is 15gtts/mL)
108 mL / 0.5 hr -> 216 mL / hr
216mL/hr x 1 hr/60min = 3.6 mL/min
3.6 mL/min x 15 gtts/mL = 54 gtts/min
A medication has a ratio strength of 1:1000. How many milligrams of drug are in 750 mL of this solution?
1:1000 => 1 g / 1000 mL
Convert grams to mg: 1 g = 1000 mg
Concentration = 1000 mg / 1000 mL = 1 mg/mL Amount in 750 mL = 1 mg/mL * 750 mL = 750 mg
Calculate the Selling Price utilizing the following:
(AWP) +/- (AWP x %) + Dispensing Fee
A third party payer contracts a dispensing fee of $2.00 and increases the AWP by 3%. The order for the prescription is 90 mL of a drug with an AWP of $500 for 2000 mL tablets.
(AWP) +/- (AWP x %) + Dispensing Fee
($22.50) + ($22.50x 3%) + $2.00
Selling Price = $25.18