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Chapter 14 Calculations. Interpreting Physicians’ Orders for Dosages. A physician writes a prescription for a child for amoxicillin 500 mg stat and then 250 mg tid . The 150-mL medication container is reconstituted to 250 mg/5 mL. What is the volume of the stat dose?
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Chapter 14 Calculations Interpreting Physicians’ Orders for Dosages
A physician writes a prescription for a child for amoxicillin 500 mg stat and then 250 mg tid. The 150-mL medication container is reconstituted to 250 mg/5 mL. • What is the volume of the stat dose? • What is the volume of the remaining doses? • How many total doses are in the container? • If the child is to take the medication for 10 days, is there sufficient medication in the one container? Show your calculations.
A physician orders furosemide 40 mg daily for a month. The available medication is furosemide 20-mg tablets. • How many tablets will be needed for this prescription? • How many tablets will be administered with each dose?
A physician orders Humulin N 35 units and Humulin R 45 units qam and Humulin R 40 units qpm. Humulin is available in 10-mL vials. • How many vials of Humulin N are needed for a month’s supply? • How many vials of Humulin R are needed for a month’s supply?
A physician orders LRto run at a flow rate of 5 mL/min using an infusion set of 20 gtts/mL. How many liters of fluids would be needed for 24 hours?
A physician orders fluconazole suspension 15 mg po daily. The medication is in a 35-mL container with a dosage of 10 mg/mL. • How many milliliters of the medication should be administered with each dose? • What is the appropriate utensil to be supplied to the parent to administer this medication? • How many doses are in the container?
A physician orders heparin sodium 1500 units stat and in the am, then 1000 units daily. The available medication is heparin sodium 5000 units/mL. • How many milliliters should be administered to the patient with each dose? • How many doses are in the container? • What syringe should be used for the administration of this medication?
A physician orders Ultracet # 40 1 or 2 tab q4-6h prn pain. The patient returns in 5 days asking for a refill. • If the patient had taken the medication at the highest prescribed dose, would a refill be appropriate?
A physician orders regular insulin 55 units qam and 35 units qpm for a person with diabetes. The vial of insulin contains 10 mL of 100-unit regular insulin. • How many vials of medication would be needed for a month’s supply? • ____________________ • How many packages of insulin syringes (10 per package) would be needed? • ____________________ • If NPH insulin 25 units qam are added to the order, how many vials of that medication would be needed for a month’s supply? • ____________________ • If both types of insulin are combined in one syringe, how many units should be in the syringe every morning? • ____________________
A physician orders amoxicillin 250 mg tid ´ 10 days for a child. The medication is available as amoxicillin 125 mg/5 mL in a 150-mL container. • What is the volume of medication that the child should receive with each dose? • ____________________ • How many doses are in the container? • ____________________ • Is there an adequate amount of medication for the physician’s order? • ____________________ • What is the dose for the child in household measurements? • ____________________ • If the medication was available as 250 mg/5mL in a container holding 150 mL, would there be an adequate amount for the time desired? • ____________________
A physician orders Cefadyl 1 g in 50 mL of D-5-W bid to be infused at the rate of 10 mg/min. • How long will the fluids need to infuse for the patient to receive the entire amount? • ____________________ • Would the most appropriate IV infusion set be 20 gtts/mL or 50 gtts/mL? • ____________________ • What is the total weight of medication that the patient will receive? • ____________________ • What is the weight of dextrose that the patient will receive in a day’s administration? • ____________________
A physician orders Lanoxin elixir 125 mcg daily for a child. The medication available is digoxin elixir 0.05 g/mL. • How many milliliters of the medication will be needed for a month’s supply? • ____________________ • What is the volume of medication that should be administered to the child with each dose? • ____________________ • How can this medication be measured in household devices? • ____________________
A physician orders phenobarbitalgr ii tid for a patient with seizures. The following label shows the available medication. • How many tablets are needed for a month’s supply? • ____________________
What volume of medication should be administered with each dose? • Which utensil should be used for administration of this medication? • If the medicine is given in a household utensil, what would be the amount of medication to be administered? • Which utensil shows the correct amount of medication to be administered?
