Medication Calculation Examination. Study Guide • Sample: Dr. B. orders a liter of D5W to run this 8-hour shift. The drop factor is 15. What is the drip rate per minute? Solution: 1 liter = 1000 cc of solution, next convert 8 hours to minutes (8 X 60 minutes) = 480 minutes . 1000 cc x 15 gtts ÷ 480 minutes = 31.25 or 31 gtts/min . Answer: 31 gtts/min
[amount of fluid to be infused] x [drop factor] ÷ minutes to infuse = gtts/min. Sample: Dr. A. orders your patient to receive 125 ml of D5W an hour for the next 8 hours. The nursing unit uses tubing with a drop factor of 10. What is the drip rate per minute? Solution: Convert 1 hour to 60 minutes: 1250 x 10 gtts ÷ 60 minutes = 20.83 or 21 gtts/min
Mar 01, 2017 · Drop Factor (DF) Number of drops per milliliter delivered through various sizes of IV tubing devices. The tubing diameter affects the size of the drop. The DF is used to calculate flow rates on gravity devices. DF is also known as tubing factor. The abbreviation gtt is an outdated apothecary term for drop(s). It may be seen on some prescriber’s orders.
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Oral medications and IV solutions that may be medicated are the two most common routes of medication administration. The nursing responsibilities related to the patient’s safety during oral and IV medication therapy are paramount.
Volumes of solution per IV container are usually 500 or 1000 mL but can vary from less than 50 to more than 1000 mL. Some medicated solutions are provided in 100- and 250-mL containers. Volumes of 500 and 1000 mL are among the most frequently encountered for maintenance and continuous solutions.
Bolus Fluids or concentrated medication solution given by IV route over a relatively brief period of time. Equipment used to deliver varies, depending on existing IV lines, volume, and time to be infused. Often given by injection into a peripheral venous access device (IV push).
IV Piggyback (IVPB) Small-volume infusions, usually 50 or 100 mL, infused through a short secondary tubing line that is “piggybacked” to a port on a primary line.
Intravenous tubing provides the connection between the IV solution and the patient. The nurse selects the tubing needed based on the order and the infusion equipment provided by the agency.
The nurse does not have to calculate drops per minute. The Dial-a-Flo device takes care of that step when the precise mL per hr from the order is entered. (These devices are not always supplied.)
In case a provider orders an intravenous fluid infusion, this health application can help you ensure that the fluid administrated is given at the prescribed rate, by considering the following aspects:
Let’s assume that a volume of 1500 ml IV Saline is administrated over 12 hours by a drop factor of 16 drops / ml. How many drops per minute should be ordered?