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need help with dimensional analysis on this problems

Dimensional Analysis Handout Questions 1. Health care provider ordered Heparin 6500 units subcut 12h. Available is Heparin la

6. Health care provider ordered Diphenhydramine 75 mg po daily for 5 days. Available is Diphenhydramine 25 mg per 5 mL. How m

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Answer #1

1. HCP ordered Heparin 6500 units subcut 12 hourly.

Avalable heparin labeled 10,000 unit per ml.

Dose will be

6500 units - 10,000units/ml = 0.65ml

Answer - For 6500 units nurse have to take 0.65ml.

2. HCP Order Solu-medrol 175mg IV daily

Available Solu-medrol labeled 500mg/8ml

1 ml of the solution contains

500mg + 8ml = 62.5mg/ml

The patient will take 175 mg

175mg + 62.5mg/ml = 2.8ml

Answer - So, the patient needs 2.8ml daily.

3. Order dose - Trental(ER) 0.4g

Available drug 400mg tablets

1 gram equals to 1000mg, so 0.4 gram equals tp 400 mg.

Answer - The patient will take 1 tablet.

4. The patients state "I take 1 tsp of gluconate 3 times a day"

Drug labeled is 30mg/ml

1 tsp is 4.929 ml (approx 5 ml)

Patient taking 1 tsp of gluconate 3 times a day, means 3 tsp in a day.

if 1 tsp is 5 ml

then the patient takin 15ml in a day.

1 ml contains 30mg

15 ml contains 450mg. 15ml x 30mg/ml = 450mg/day

Patient taking 450mg of the drug in a day.

450mg + 3times = 150mg/dose

Answer - 150mg each time.

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