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5. Order: Erythromycin 200mg in 250 ml DSW over 1 hour. Drop Factor is 10 gtt/ml. Available is Erythromycin 500mg/5 ml. How m
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5. Order dose Erythromycin 200mg in 250ml D5W over 1 hour.

Drop factor 10 gtt/ml

Available drug quantity 500mg/5ml

Answer -

A nurse should administer 2ml from 5ml vial because we need 200 mg of the drug, and take 248 ml of D5W because we have to make it total 250 ml.

6.

Total volume is 250ml should be administered in 1 hour

The formula of Drop calculation - (Volumein ML: Timein Minute) x Dropfactor

(250 = 60min) x 10gtt/ml = 41.66drops/min , 42 drops per minute

Answer - Nurse regulate the flow 42gtt/min

7.

The order dose Ampicillin 1g in 50ml of D5W to run over 45 min

Drop factor 10 gtt/ml

Available quantity 2g/10ml

Answer - We need to add 1 gram of Ampicillin

So, we will add 5 ml of the drug into bag.

10ml = 2g = 5ml/1g

8

We need to administer 50ml in 45 min.

Formula - (Volumein ML: Timein Minute) x Dropfactor

(50ml = 45min) x 10gtt/ml = 11.11drops/min, I.e 11 drops per Minute.

Answer - Nurse regulate the flow 11gtt/min

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