NUR115 Karch Chpt 5 Dosage Calculations

Aminophylinie is supplied in a 500mg/2.5mL solution. How much would be given if an order were written for 100mcg of Aminophylinine IV?

0.5mL

Digoxin 0.125mg is ordered for a patient who is having trouble swallowing. The bottle of Digoxin elixir reads 0.05mg/mL. How much would you give?

0.5mL

Ordered 6.5mg Available 10mg/mL Proper dose = ____mL

0.65mL

Most institutions require how many nurses to check pediatric dosage calculations? Why?

2; even the slightest error in calculation is critical in small children

A patient needs to take 0.75g of Tetracycline PO. The drug comes in 250mg tablets. How many tablets should the patient take?

3 tablets

Ordered 0.35mg Available 1.2mg/2mL. Proper dose _____mL

0.58 (0.6) mL

Clark's Rule for Pediatric Dosage

Accounts for weight in the dose formula (not usually used today)

Heparin 800 units is ordered for a pt. The heparin is supplied in a multidose vial that is labeled 10,000 units/mL . How many milliters of Heparin would be needed to treat this patient?

0.08mL

Ordered 80mg Available 50mg/mL Proper dose ______mL

1.6mL

Ordered 150,000 units Available 400,000 units/5mL Proper dose = ______mL

1.9mL

A postoperative order is written for 15gr of codeine every 4 hours as needed for pain. Each dose given will contain how many milligrams of codeine?

1000mg

An order is written for 1000mL of normal saline to be administered IV over 10 hours. The drop factor on the IV tubing states 15 drops/mL. What is the IV flow rate?

100mL/h at 25drops/min

Robitussin cough syrup 225mg PO is ordered. The bottle reads 600mg in 1oz. How much cough syrup should be given in mL?

11.25mL

An order is written for 700mg of Ampicillin PO. The drug is supplied in liquid form as 1g/3.5mL. How much of the liquid should be given?

2.45mL

The average adult dose of Meperidine is 75mg. What does would be appropriate for a 10 month old infant?

5mg

The usual adult dose of Diphenhydramine (Benadryl) is 50mg. What would be a safe dose for a child weighing 27lb?

9mg

Instead of Fried's, Young's, and Clark's formulas for pediatrics, what is commonly used today?

Body Surface Area Formula

Young's Rule for Pediatric Dosage

For children 1 to 12 years (not usually used today)

Fried's Rule for Pediatric Dosage

For children under 1 years (not usually used today)

An order has been written for a patient to receive 400mL of 5% dextrose in water (D5W) for a period of 4 hours in a microdrip system at 15 drops/mL. Calculate the correct setting (drop per minute).

Intravenous Formula

An order has been written for a patient to receive 400mL of 5% dextrose in water (D5W) for a period of 4 hours in a standard microdrip system at. 60 drops/mL. Calculate the correct setting (drop per minute).

Intravenous Formula

An order is written for 0.05g Aldactone (spironolactone) to be given orally. Aldactone is available in 25 mg tablets. How many tablets would you have to give?

Oral Formula

An order is written for 10 gr of aspirin. The tablets that are available each contain 5 gr. How many tablets should the nurse give?

Oral Formula

An order has been written for 250mg of Amoxicillin. The bottle sates that the solution contains 125mg/5mL. How much of the liquid should you give?

Oral Liquid Formula

An order has been written for 75mg of Meperidine to be given intramuscularly. The vial states that it contains Meperidine, 1mL=50mg.

Parenteral Formula

What are Intravenous solutions used for?

to deliver a prescribed amount of fluid, electrolytes, vitamins, nutrients, or drugs directly into the bloodstream