Question

The order reads: 900mL NS IV 5 hr. Calculate the flow rate in millimeters per hour when the drop factor is 10 drops per milliliter. The rate ordered by the physician is 80 microdrops per minute. How many milliliters per hour will this patient receive? 1,000 mL of NS must infuse via IV over 8 hours. The drop factor is 20 gtt/mL. Find the flow rate in gtt/min. An infusion of 5% D/W begins with 300 mL in the IV bag. The pump is set at 60 mL/h. How many hours will it take for the infusion to complete? The prescriber has ordered 1000 milliliters of NS with an additions of 200 units of regular insulin IV. Infuse at a rate of 2.5 milliliters per minute. How many hours will it take to complete this infusion? a) An IV is infusing at 100 mL/h. The strength of the solution is 200 mg is 500 mL. Find the dosage rate in mg/h. b)Convert 100 mL/h to mg/h using the strength of the solution as the unit fraction. a) The patient is receiving 10 mg/min through an IVPB. The solution has a strength of 400 mg per 100 mL. Find the flow rate in mL/h. b)Convert mg/min to mL/h using the strength of the solution as the unit fraction. A child is to receive an IV bolus of 1% lidocaine, 0.1 milligram per kilogram. How many milliliters will your prepare for a child who weighs 40 kilograms? A child who weighs 18 kg is to receive Motrin (ibuprofen) 8 mg/kg po q4h prn for pain. The label reads 100 mg/5 mL. How many milliliters will you administer? A drug is ordered: 0.045 mg IM stat. The child weighs 40 kilograms, and the recommended does is (0.001-0.002) milligram per kilogram. Is this ordered dose safe for this child?

Answer 1

1. Volume = 900 ml

Time = 5hr = 300 min

Drop factor = 10 drops per ml

Flow rate = 10 * 900/300 = 30 drops per min = 90 ml per hour [ 20 drops = 1 ml]

2. convert 80 microdrops per minute to ml per hr

80 microdrops per min = 0.00008*60/20 = 0.00024 ml per hour

3. volume = 1000 ml

time = 8 hrs = 480 min

drop factor = 20 gtt/ml

Flow rate = 1000 * 20 / 480 = 41.667 gtt/min

4. volume = 300 ml

flow rate = 60 ml/h

time for infusion of 5% D/W = 300/60 = 5 hours