Iv drop calculations
- 1. IV drop calculations January 17, 2012 HW Practice exam #4 1
- 2. IV drop calculations January 17, 2012 Parenteral Medications Directions for Calculating IV Flow Rates A. To find flow rate stated in cc's per hour (if not given in the order): Total volume of solution in cc's x cc's Total number of hours to run = # hours Example: 1000 cc IV solution ordered to infuse over 8 hours. HW Practice exam #4 2
- 3. IV drop calculations January 17, 2012 This number (cc/hr) is used to calculate drops per minute. (When answer is not even - round to nearest whole number) Example: 1000 cc solution to infuse over 6 hours. HW Practice exam #4 3
- 4. IV drop calculations January 17, 2012 To find flow rate stated in drops per minute: Drop factor is the number of drops it takes to equal 1 cc with a specific type of IV tubing. The drop factor is stated on the tubing package. cc/hr. x drop factor gtts/min 60 min/hr = Example: The drop factor is a 15 gtts/cc and the flow rate is 120 cc/hr. HW Practice exam #4 4
- 5. IV drop calculations January 17, 2012 Example: The drop factor is 20 gtts/cc and the flow rate is 100 cc/hr. HW Practice exam #4 5
- 6. IV drop calculations January 17, 2012 IV Formulas Amount of Fluid per hour: ml/hr or cc/hr Total Volume TV Total # of hrs to infuse TT How many drops per minute: gtts/min. ml/hr x drop factor (given) 60 min/hr Example: 100cc x 20 = 33 gtts/min 60 HW Practice exam #4 6
- 7. IV drop calculations January 17, 2012 How much drug in 1 ml (or cc) of fluid? Total amount of drug = TD Total amount of fluid TV How much drug in hour? 1. TV = TT (total time) # cc /hr 2. Total amount of drug = TD Total time (TT) TT What time of day will the IV end? Current time + TV = end time ml/hr With IV fluids round off to the nearest whole number. HW Practice exam #4 7
- 8. IV drop calculations January 17, 2012 Examples 1. Ordered: 5 mg Available: 2 mg/ml How many ml do you give? 2. Ordered: 5cc Available: 10 mg/ cc HW Practice exam #4 8
- 9. IV drop calculations January 17, 2012 3. IV Order: D5W with 20 meq Kcl per liter to infuse at 50 cc/hour. To prepare this solution, the nurse uses the stock preparation of Kcl (10 meq/5cc) to add to the liter of D5W to make the concentration ordered. The drop factor is 60 gtts/cc. How many gtts/min will the IV run? How much fluid will the client receive in 24 hrs? How many meq of Kcl will client receive in one hour? HW Practice exam #4 9
- 10. IV drop calculations January 17, 2012 4. Ordered: 2 mg/kg Client weighed: 44 lbs How many mg will the client receive? 5. Ordered: D51/2NS to infuse 2 liters over 16 hours. How many cc's/hr will be infused per hour? HW Practice exam #4 10