Question

Calculating an injection/IVP volume

Complete the problems below

1. Medication ordered: 15 mg IVP= 1oml

Available: 3 mg / 2 ml

How many ml will be administered?

2. Medication ordered: 1500 mg

Available: 0.5g / 2 ml

How many ml will be administered?

3. Medication ordered: 175 mg every 12 hours IVPB

Available: 250 mg / 10 ml

How many ml will be administered per dose?

How many ml will be administered during a 24 hour period?

4. Medication ordered: 35 mg q4h

Available: 200 mg / 50 ml

Round to the nearest tenth

How many ml will be administered per dose?

How many ml will be administered during a 24 hour period?

Complete the problems below

Medication order: 14 mg/kg/day

Patient weight: 99 pounds

The patient will receive ____ mg/day.

Medication order: 20 mg/kg/day

Patient weight: 122 pounds

The patient will receive ____ mg/day.

Complete the problems below

BSA: 1.2 m2

Medication order: 3 mg / m2 / day

Available: 3 mg / 10 mL

What is the daily mg dosage?

How many ml will you administer each day?

BSA: 1.1 m2

Medication order: 5 mg / m2 / day PO, given twice a day

Available: 2 mg / 7.5 mL

Round to the nearest tenth

How many ml will you administer daily?

How many ml will you administer per dose?

BSA: 0.9 m2

Medication order: 2.5 mg / m2 / day PO, tid

Available: 0.5 mg / 2.5 mL

Round to the nearest hundredth

How many ml will you administer daily?

How many ml will you administer per dose?

Medication ordered: Prepare 500 ml of a 10 % solution

Available: 50% solution

What volume of the 50% solution is needed?

Medication ordered: Prepare 250 ml of a 15 % solution

Available: 70% solution

What volume of the 70% solution is needed?

Medication ordered: Prepare 600 ml of a 25 % solution

Available: 75% solution

What volume of the 75% solution is needed?

Medication ordered: Prepare 750 ml of a 20 % solution

Available: 80% solution

What volume of the 80% solution is needed?

Complete the problems below

Which patient would need more daily IV hydration?

A patient who is NPO

A patient who is eating and drinking

Which patient would need more daily IV hydration?

An afebrile patient

A patient with a fever

An afebril NPO patient weighs 75 kg, and needs daily IV hydration.

How many ml per day should the patient be given?

A patient weighs 80 kg, and needs daily IV hydration. This patient is eating and drinking.

How many ml per day should the patient be given?

An NPO patient weighs 65 kg, has a temperature of 99.6 F, and needs daily IV hydration.

How many ml per day should the patient be given?

Answer 1

1. Medication ordered = 15mg

Available in hand = 3mg / 2 ml

Desired dose (x) = ordered dose ÷ available in hand × quantity

Answer : x = 15 ÷ 3× 2 = 10

Desired dose is 10 ml.

2. Medication ordered = 1500 mg

Available in hand = 0.5 gm ( 500 mg ) /2ml

Answer is 1500 mg ÷ 500 mg × 2 = 6

Desired dose is 6ml .

3. Medication ordered = 175 mg q12 h

Available in hand = 250 mg / 10 ml

Answer is 175 ÷ 250 × 10 = 7

A . 7 ml per dose

B. In 24 hours = 175 mg 12 hourly , so

7×2 = 14 ml

4. Medication ordered = 35 mg / q4h

Available dose = 200 mg / 50 ml

Desired dose = 35 ÷ 200 × 50 = 8.75

A. Per dose = 8.75 ml

B. In 24 hours = 35 mg 4 hourly , so

8.75 ×6 = 52 .5 ml

5. Medicine prescribed = 14 mg /kg /day

Patient weight = 99 lbs  ie , 44.9 kg

Patient will receive ( 14 × 44.9 ) 628.6 mg per day.

6.Medicine prescribed = 20 mg / kg / day

Patient weight = 122lbs ie , 55.3 kg

Patient will receive (20 × 55.3 ) 1106 mg per day .