IV Calculations

A patient is receiving 250 mL normal saline IV over 4 hours, using tubing with a drip factor of 10 drops/mL. How many drops per minute should be delivered?

10 gtts/minute Use the IV flow rate formula for gtts/minute above. Multiply 250 ml (total infusion volume) with 10 gtts/ml (drop factor) to get 2,500. To get the total infusion time in minutes, multiply 4 hours with 60 minutes to get 240 minutes. Divide 2,500 with 240 minutes to get 10.4 gtts/minute. Finally, round off to a whole number to get 10 gtts/minute.

You have an order to administer 1 L of D5W IV over 8 hours. How many drops per minute will you set if you are using tubing with a drop factor of 15?

31 gtts/min Use the IV flow rate formula for gtts/minute above. Multiply 1,000 ml (total infusion volume) with 15 gtt/ml (drop factor) to get 15,000 gtts. To get the total infusion time in minutes, multiply 8 hours with 60 minutes to get 480 minutes. Divide 15,000 gtts with 480 minutes to get 31.25 gtts/minute. Round off to a whole number to get 31 gtts/minute.

A health care provider prescribes cephalothin (Keflin) 2 g in 100 ml D5W IVPB over 20 minutes. The I.V. tubing is 15 gtts/ml. Calculate the flow rate in drops per minute.

75 drops per minute Use the IV flow rate formula for gtts/min above. Multiply 100 ml (total infusion volume) with 15 gtt/ml (drop factor) to get 1,500 gtts. Divide 1,500 gtts with 20 minutes (total infusion time) to get 75 gtts/min.

A patient is receiving dextrose 5% at a rate of 55 mL/h. How much fluid will he receive in 5 hours? a. 275 mL b. 225 mL c. 285 mL d. 265 mL

a. 275 mL

The doctor orders an IV infusion of D5W 1000 mL to infuse over the next 8 hours. The IV set delivers 15 gtt/min. What is the correct rate of flow? (Answer in gtt/min rounded to the nearest whole number). a. 16 gtt/min b. 31 gtt/min c. 48 gtt/min d. 60 gtt/min

b. 31 gtt/min

At 0800 h, one litre of dextrose 4% and 1/5 normal saline is set up to run at 75 mL/h. At what time would the flask be finished? a. 1620 h b. 1840 h c. 2120 h d. 2320 h

c. 2120 h

What is the required flow rate of a volumetric infusion pump to deliver 2 litres of dextrose 4% in 1/5 normal saline over 15 hours? (Answer in mL/h rounded to the nearest whole number). a. 67 mL/h b. 147 mL/h c. 113 mL/h d. 133 mL/h

d. 133 mL/h

A postoperative adult male is to be given one unit of autologous blood in 4 hours. The unit of autologous blood has a volume of 500 mL. The giving set emits 20 drops/mL. What is the required drip rate in drops per minute for the blood infusion? (Round answer to the nearest whole number). a. 24 gtt/min b. 48 gtt/min c. 36 gtt/min d. 42 gtt/min

d. 42 gtt/min

A health care provider prescribes 1 and 1/4 liters of D5LRS to be infused over 18 hours. The drop factor is 20 drops per mL. How many mL per hour should the nurse adjust the flow rate to safely administer the prescribed intravenous solution? Additionally, compute for the drops per minute.

69 mL per hour 23 drops per minute Use the IV flow rate formula for mL per hour above. 1 and 1/4 L of D5LRS is 1.25 L. Convert it to milliliters by moving the decimal point three digits to the right or by multiplying it with 1000 to get 1,250 mL. Divide 1,250 ml (total infusion volume) with 18 hours (total infusion time) to get 69.44 mL/hr. Round your final answer to a whole number to get 69 mL/hr (nice!). Using your answer from the previous computation, divide 69 mL/hour with 60 minutes/hour to get 1.15 mL per minute. Multiply 1.15 mL per minute to 20 drops per mL (drop factor) to get 23 drops/min.

A 58-year-old male patient was diagnosed with pneumonia and was brought under your care. The patient complains of difficulty of breathing, chest pain of 5/10, and coughing with phlegm. Your initial assessment reveals a respiratory rate of 33 bpm, temperature of 38.1oC, heart rate of 90 bpm, and blood pressure of 110/80. His physician ordered an infusion of 1,000 mL of normal saline to be administered over the next eight (8) hours using a macroset with a drop factor of 10 drops per mL. You initiated the IV at 1:00 PM during your shift. With the current rate, at what time would you hang the next bag? A. 9:00 PM the next day. B. 10:00 PM the next day C. 9:00 PM of the same day. D. 10:00 PM of the same day

C. 9:00 PM of the same day. If the IV bag was started at 1:00 PM, add 8 hours more to get 9:00 PM of the same day.

The physician's order is for D5LR IV at 75 mL/h for 8 hours. The drop factor is 10 gtt/mL. What is the total volume? a. 600 mL b. 300 mL c. 60 mL d. 460 mL

a. 600 mL

A female patient is receiving Hartmann's solution at a rate of 125 mL/h. How much solution will she receive over 5 hours? a. 625 mL b. 375 mL c. 250 mL d. 875 mL

a. 625 mL

On Wednesday afternoon, your patient returns from surgery with an IV fluid order for 1000 cc every 8 hours. On Thursday morning at 8:00 am, you assess that 600 mL of a 1L bag has been absorbed. The physician orders the remainder of that bag to infuse over the next 6 hours. You know that the IV tubing used by your unit delivers 10 gtt/mL. What will be the correct rate of flow? a. 8 gtt/min b. 11 gtt/min c. 13 gtt/min d. 21 gtt/min

b. 11 gtt/min

You need to infuse 1000 mL of normal saline IV over 6 hours. How many milliliters per hour do you set on the IV infusion controller?

167 ml/hour Use the IV flow rate formula for ml/hour above. Divide 1,000 ml (total infusion volume) with 6 hours (total infusion time) to get 166.6 ml/hr. Round off to a whole number to get 167 ml/hr.

At the change of shift, you notice 200 ml left to count in your patient's IV bag. The IV is infusing at 80 ml/hr. How much longer in hours will the IV run?

2.5 hours Divide 200 ml with 80 ml/hr to get 2.5 hours or 2 1/2 hours.

You have an order to infuse 500 mL normal saline IV over 4 hours. How many drops per minute will you set on gravity tubing that delivers 10 gtts/mL?

21 gtts/min Use the IV flow rate formula for gtts/minute above. Multiply 500 ml (total infusion volume) with 10 gtts/ml (drop factor) to get 5,000 gtts. To get the total infusion time in minutes, multiply 4 hours with 60 minutes to get 240 minutes. Divide 5,000 gtts with 240 minutes to get 20.8 gtts/minute. Round off to a whole number to get 21 gtts/minute.

You have an order to administer 1 L of 5% Dextrose in 0.45 normal saline IV over 16 hours. How many milliliters per hour will you set on the IV infusion controller?

63 mL/hour Use the IV flow rate formula for mL/hr above. Divide 1,000 mL (total infusion volume) with 16 hours (total infusion time) to get 62.5 mL/hr. Round off to a whole number to get 63 mL/hr.

What is the correct setting for a burette pump to administer 120 mL of fluid containing 500 mg of vancomycin in 50 minutes? (Answer in mL/h rounded to the nearest whole number). a. 144 mL/h b. 72 mL/h c. 2.4 mL/h d. 240 mL/h

a. 144 mL/h

You have an order of heparin 1,000 units/hr from an I.V. bag mixed 40,000 units in 1 L D5W. Calculate for the milliliters per hour needed to deliver the correct amount of heparin.

25 ml/hr Use the standard formula above. Multiply 1,000 units (desired dose) with 1,000 ml (vehicle) to get 1,000,000. Divide 1,000,000 with 40,000 units (drug on hand) to get 25 ml/hr.

You have 350 mL packed red blood cells that you want to infuse IV over 2 hours. There is no controller available. Your blood tubing delivers 10 gtts/mL. How many drops per minute should you set?

29 gtts/minute Use the IV flow rate formula for gtts/minute above. Multiply 350 ml (total infusion volume) with 10 gtts/ml (drop factor) to get 3,500 gtts. To get the total infusion time in minutes, multiply 2 hours with 60 minutes to get 120 minutes. Divide 3,500 gtts with 120 minutes to get 29.1 gtts/minute. Finally, round off to a whole number to get 29 gtts/minute.

Nurse Jeff will infuse 1 liter of lactated ringer's solution at 125 ml/hr via gravity flow using tubing calibrated at 15 gtt/ml. Calculate for the infusion time and provide the flow rate in drops per minute.

31 gtts/min To get the total infusion time in minutes, divide 1,000 ml with 125 ml/hr to get 8 hours, then multiply 8 hours to 60 minutes to get 480 minutes. Now solve for the drops per minute by using the IV flow rate formula above. Multiply 1000 ml (total infusion volume) with 15 gtt/ml to get 15,000 gtts. Divide 15,000 by 480 minutes to get 31.25 gtts/minute. Round off to a whole number to get 31 gtts/minute.

The patient's heparin drip is infusing at 11 ml/hr on an infusion pump. The bag of fluid is mixed 25,000 units of Heparin in 250 ml D5W. Calculate how many units of heparin the patient is receiving hourly.

1100 units/hr Use the standard formula above. Divide 25,000 units (desired dose) with 250 ml (vehicle) to get 100 units. Multiply 100 units with 11 ml/hr (on hand) to get 1,100 units/hr.

A litre of dextrose 5% is to be given I.V. The solution is to run at 75 mL/h for the first 6 hours, then the rate is reduced to 50 mL/h. Calculate the total time required to give the full volume. a. 13 hours b. 17 hours c. 15 hours d. 19 hours

b. 17 hours

At 0430 hours, an infusion pump is set to deliver 1.5 litres of fluid at a rate of 90 mL/h. After 10 hours the pump is reset to 75 mL/h. Calculate the finishing time. a. 2350 h b. 2230 h c. 2140 h d. 1530 h

b. 2230 h

A teenager is to receive 500 mL of dextrose 5% over 8 hours. The I.V. set emits 20 drops/mL. What is the required drip rate in drops per minute? (Round answer to the nearest whole number). a. 63 gtt/min b. 25 gtt/min c. 21 gtt/min d. 16 gtt/min

c. 21 gtt/min

A patient, admitted with a head injury, has an order to start 1000 cc of D5NS at 30 mL/h. The IV tubing has a calibration of 60 gtt/mL. What is the correct rate of flow for this patient? (Answer in gtt/min rounded to the nearest whole number). a. 15 gtt/min b. 20 gtt/min c. 30 gtt/min d. 40 gtt/min

c. 30 gtt/min

A patient is to receive 100 mL of normal saline, I.V. If the infusion pump is set to deliver 150 mL/h, how long will the infusion take? a. 1 hour and 30 minutes b. 30 minutes c. 40 minutes d. 50 minutes

c. 40 minutes

Nurse Jeremy will infuse cefamandole (Mandol) 300 mg in 50 mL of D5W IVPB for 15 minutes; Drop factor: 10 gtt/mL. How many mL/hr will nurse Jeremy set on the IV infusion pump?

200 mL/hr Use the IV flow rate formula for mL/hr above. Divide 50 ml (total infusion volume) with 0.25 hours (total infusion time) to get 200 mL/hr.

The patient's Heparin is infusing at 28 ml/hr on an infusion pump. The bag of fluid is mixed with 20,000 units of Heparin in 500 ml D5W. Calculate how many units of heparin the patient is receiving hourly.

1120 units per hour Use the standard formula above. Divide 20,000 units (desired dose) with 500 ml (vehicle) to get 40 units. Multiply 40 units to 28 ml/hr (on hand) to get 1,120 units/hr.

You have 500 mL of lipids on a second IV infusion controller to piggyback into a primary hyperalimentation line. You want to run the infusion over 24 hours. At what rate should you run the lipids?

21 mL/hour Use the IV flow rate formula for mL/hr above. Divide 500 mL (total infusion volume) with 24 hours (total infusion time) to get 20.8 mL/hr. Round off to a whole number to get 21 mL/hr.

Client with an infusion pump has an order for 3,000 mL D5W over 24 hours

125 mL/hr 3,000 mL/24 hr

An infusion pump is to be used to give one litre of fluid over 11 hours. At what flow rate should the pump be set? a. 46 mL/h b. 96 mL/h c. 91 mL/h d. 86 mL/h

c. 91 mL/h

What is the correct setting for a burette pump to administer 80 mL of fluid containing 80 mg of gentamicin in 45 minutes? (Answer in mL/h rounded to the nearest whole number). a. 54 mL/h b. 360 mL/h c. 122 mL/h d. 107 mL/h

d. 107 mL/h

The 10:00 am medications scheduled for your patient include Keflex 1.5 G in 50 mL of a 5% Dextrose solution. According to the pharmacy this preparation should be administered in 30 minutes. The IV tubing on your unit delivers 15 gtt/mL. What is the correct rate of flow in drops per minute? (Answer in gtt/min rounded to the nearest whole number). a. 30 gtts/min b. 25 gtts/min c. 15 gtts/min d. 10 gtts/min

b. 25 gtts/min

A boy is to be given dextrose 5% via an infusion pump. If the pump is set at 60 mL/h, how much dextrose will he receive in 12 hours? a. 360 mL b. 600 mL c. 780 mL d. 720 mL

d. 720 mL

The patient is ordered an IV of 1,000 ml of Normal Saline over 8 hours. At what rate would you set the IV pump in milliliters per hour?

125 milliliters per hour Use the IV flow rate formula for ml/hr above. Divide 1000 ml (total infusion volume) with 8 hours (total infusion time) to get 125 ml/hr.

How many drops per minute will you infuse if the order reads: "Infuse 3/4 L of D5W over 5 hours and 45 minutes". The drop factor is 60 gtts/mL.

130 gtts/min Use the IV flow rate formula for gtts/minute above. Multiply 750 ml (total infusion volume) to 60 gtt/ml (drop factor) to get 45,000. To get the total infusion time in minutes, multiply 5 hours to 60 minutes to get 300 minutes, then add 45 minutes to a total of 345 minutes. Divide 45,000 by 345 minutes to get 130.43 gtts/minute. Finally, round off to a whole number to get 130 gtts/minute.

A health care provider orders cefoxitin (Mefoxin) 0.5 g in 275 mL of D5W to infuse IVPB over 2 hours; Drop Factor: 60 gtt/mL. How many gtts/min will you regulate the IV?

138 gtts/min 2hrsx60mins=120mins Use the IV flow rate formula for gtts/min above. Multiply 275 ml (total infusion volume) with 60 gtt/ml (drop factor) to get 16,500 gtts. To get the total infusion time in minutes, multiply 2 hours with 60 minutes to get 120 minutes. Divide 16,500 gtts with 120 minutes to get 137.5 gtts/min. Round off to a whole number to get 138 gtts/min.

A primary healthcare provider orders ranitidine HCl (Zantac) 150 mg in 175 mL of D5W to infuse via intravenous piggyback over 45 minutes. The drop factor is set at 12 drops per mL. How many mL/hr will you set on the IV infusion pump?

233 mL per hour Use the IV flow rate formula for mL/hr above. Divide 175 ml (total infusion volume) with 0.75 hours (total infusion time) to get 233.3 mL/hr. Round off 233.3 to a whole number and get 233 mL/hour.

Using your answer from the previous computation, divide 69 mL/hour with 60 minutes/hour to get 1.15 mL per minute. Multiply 1.15 mL per minute to 20 drops per mL (drop factor) to get 23 drops/min.

38 drops per minute Use the IV flow rate formula for drops/minute above. Calculate first for the infusion time by dividing the total infusion volume of 2,750 mL with 150 mL/hour to get 18.33 hours. Convert hours to minutes by multiplying 18.33 hours to 60 minutes per hour and get 1,100 minutes. Multiply 2,750 mL (total infusion volume) with 15 drops/mL (drop factor) to get 41,250 drops. Divide 41,250 gtts with 1,100 minutes (total time of infusion in minutes) to get 37.5 gtts/minute. Round it off to a whole number to get 38 drops/minute.

A healthcare provider orders 1 liter of NSS to be infused over 24 hours using a microdrip that has a drop factor of 60 gtts/mL. You will set the flow rate at how many drops per minute to accomplish this order?

42 gtts/min Use the IV flow rate formula for gtts/minute above. 1 liter is equal to 1,000 mL. Multiply 1,000 ml (total infusion volume) with 60 gtts/ml (drop factor) to get 60,000 gtts. To get the total infusion time in minutes, multiply 24 hours to 60 minutes to get 1,440 minutes. Divide 60,000 gtts with 1,440 minutes to get 41.6 gtts/minute. Finally, round off to a whole number to get 42 gtts/minute.

A 44-year-old female patient with thrombosis is undergoing anticoagulant therapy. Her primary healthcare provider writes an order for heparin sodium 900 units per hour. The label on the IV bag contains 10,000 units of heparin in 500 mL of D5W. How many milliliters per hour is needed to deliver the correct dose?

45 milliliters per hour Use the standard formula above. Multiply 900 units (desired dose) with 500 ml (vehicle) to get 450,000. Divide 450,000 with 10,000 units (drug on hand) to get 45 ml/hr.

A 25-year-old male presents with high fever (40oC), chills, weight loss, and anorexia. He also complains of abdominal pain. Your assessment of his vital signs reveals a heart rate of 110 bpm, respiration of 28 per minute, and blood pressure of 100/80 mmHg. Lungs are clear during auscultation and the rest of the physical assessment is unremarkable. Blood culture was ordered and confirms the diagnosis of systemic candidiasis. The physician orders an infusion of 50 milligrams of amphotericin B (Fungizone) in 250 milliliters of normal saline over 4 hours and 15 minutes in tubing with a drop factor of 12 drops per minute. At what flow rate will you set the IV pump?

59 milliliters per hour Use the IV flow rate formula for mL/hr. 4 hr 15 min = 4.25 hrs (4 hrs + (15 mins÷60 mins)) Divide 250 mL (total infusion volume) with 4.25 hours (total infusion time) to get 58.8 mL/hr. Finally, round off your answer to a whole number to get 59 mL/hour.

A patient is to be given one unit of autologous blood over 3 hours using a giving set that delivers 15 drops/mL. The unit of blood contains 480 mL. What is the required drip rate in drops per minute for the blood infusion? (Round answer to the nearest whole number). a. 44 gtt/min b. 40 gtt/min c. 36 gtt/min d. 38 gtt/min

b. 40 gtt/min

The doctor orders 1.5 litres of Lactated Ringers solution to be administered intravenously to your patient over the next 12 hours. Calculate the rate of flow if the IV tubing delivers 20 gtt/mL. (Answer in gtt/min rounded to the nearest whole number). a. 48 gtt/min b. 42 gtt/min c. 36 gtt/min d. 28 gtt/min

b. 42 gtt/min

What is the required flow rate of a volumetric infusion pump to deliver one litre of normal saline over 24 hours? (Answer in mL/h rounded to the nearest whole number). a. 21 mL/h b. 42 mL/h c. 62 mL/h d. 78 mL/h

b. 42 mL/h

A male patient is to receive 1 1/2 litres of fluid over 10 hours. The giving set delivers 20 drops/mL. What is the required drip rate in drops per minute? (Round answer to the nearest whole number). a. 65 gtt/min b. 50 gtt/min c. 45 gtt/min d. 35 gtt/min

b. 50 gtt/min

A patient is to be given 1 1/2 litres of fluid over 10 hours. The giving set emits 20 drops/mL. What is the required drip rate in drops/min? a. 35 drops/min b. 45 drops/min c. 50 drops/min d. 55 drops/min

c. 50 drops/min

A health care provider prescribes 1,200 mL of 0.45% normal saline solution to be infused at 125 mL/hour. The drop factor is 12 drops/mL. How many drops per minute should the nurse adjust the flow rate to safely administer the prescribed intravenous solution?

25 drops per minute Solve for the infusion time first since infusion time on this problem is not explicitly stated. To calculate for the infusion time, divide 1,200 mL (total infusion volume) with 125 mL/hour to get 9.6 hours (infusion time). Convert 9.6 hours to minutes by multiplying it to 60 minutes/hour. You'll get 576 minutes. Now solve for the drops per minute using the IV flow rate formula above. Multiply 1,200 mL (total infusion volume) with 12 drops/mL (drop factor) to get 14,400 drops. Then, divide 14,400 drops with 576 minutes (total time of infusion) to get 25 drops/minute.

The patient is ordered an IV of 1000 ml of Normal Saline over 8 hours. How many drops per minute would you set the gravity IV tubing with a drip factor of 15 drops/ml?

31 gtts/min Use the IV flow rate formula for gtts/minute above. Multiply 1,000 ml (total infusion volume) with 15 gtts/ml (drop factor) to get 15,000. To get the total infusion time in minutes, multiply 8 hours to 60 minutes to get 480 minutes. Divide 15,000 with 480 minutes to get 31.25 gtts/minutes. Round off to a whole number to get 31 gtts/minute.

The nurse follows through an order to infuse 250 mL of plates intravenous over 2 hours and 30 minutes. The drop factor is 10 drops per mL. To safely administer the order, the nurse will set the flow rate of the IV pump at what mL per hour? Additionally, at how many drops per minute?

100 mL per hour 17 drops per minute First, convert 30 minutes to hours by dividing 30 minutes to 60 minutes per hour and get 0.5 hours. Then add 0.5 to 2 hours to get 2.5 hours. Use the IV flow rate formula for mL/hr above. Divide 250 mL (total infusion volume) with 2.5 hours (total infusion time) to get 100 mL/hr. Calculate for the total infusion time in minutes. Convert 2 hours to minutes by multiplying 2 hours to 60 minutes per hour and get 120 minutes. Then add 30 minutes to get 150 minutes (total infusion time). Use the IV flow rate formula for drops per minute. Divide 250 mL (total infusion volume) with 150 minutes (total infusion time) to get 1.66 mL/minute. Multiply 1.6 mL/minute to 10 drops/mL to get 16.6 drops/minute. Or you can also: Divide 100 mL per hour (from previous computation) to 60 minutes per hour to get 1.66 mL per minute Then multiply 1.66 mL per minute to 10 drops per mL to get 16.67 drops per minute. Round off your final answer to the nearest whole number to get 17 drops/minute.

A 66-year-old client who is alert and oriented has been receiving hemodialysis three times a week during the last 4 years. Upon follow-up check up, the client complains of difficulty of breathing and chest pain and was later on diagnosed with pneumonia. Assessment reveals a temperature of 39.0oC, heart rate of 98 bpm, respiratory rate of 38 bpm, and a blood pressure of 110/80 mmHg. The physician prescribes ceftriaxone (Rocephin) 0.5 grams in 250 mL of D5W to infuse via IV piggyback within 45 minutes. The drop factor is set at 12 drops per minute. How many drops per minute will you regulate the IVPB to suffice this order?

67 drops per minute Use the IV flow rate formula for gtts/min above. Multiply 250 ml (total infusion volume) with 12 gtt/ml (drop factor) to get 3,000 gtts. Divide 3,000 gtts with 45 minutes (total infusion time) to get 66.6 gtts/min. Round off to a whole number to get 67 gtts/min.

An intravenous line has been inserted into a patient. Fluid is being delivered at a rate of 42 mL/h. How much fluid will the patient receive in 2 hours? a. 42 mL b. 21 mL c. 84 mL d. 126 mL

c. 84 mL

The order is for D5LR 1500 mL IV to run for 12 hours. The drop factor is 10 gtt/mL. What is the correct flow rate? (Answer to the nearest whole number). a. 19 gtt/min b. 20 gtt/min c. 21 gtt/min d. 27 gtt/min

c. 21 gtt/min

A nurse was assigned to the medical-surgical ward to care for a 30-year-old female client diagnosed with pneumonia. The patient's primary health care provider prescribed 250 mL of D5W to be infused over 2 hours and 45 minutes. The drop factor is 60 drops per mL. To safely administer the prescribed intravenous solution, the nurse should regulate the IV pump for how many drops per minute (drops/minute). Additionally, compute for the mL per hour.

91 drops per minute 91 mL per hour 17:45 Calculate for the total infusion time by converting 2 hours and 45 minutes to minutes. Multiply 2 hours to 60 minutes per hour to get 120 minutes then add 45 minutes to get 165 minutes (total infusion time). Use the IV flow rate formula for drops per minute above. Multiply 250 mL (total infusion volume) to 60 drops/mL (drop factor) to get 15,000 drops. Then, divide 15,000 drops by 165 minutes (total time of infusion) to get 90.90 drops/minute. Finally, round off your final answer to the nearest whole number to get 91 drops per minute. Calculating for mL per hour: Convert 2 hours and 45 minutes to hours by dividing 45 minutes to 60 minutes per hour and get 0.75 hours. Add 2 hours and 0.75 hours to get 2.75 hours. Use the IV flow rate formula for mL per hour. Divide the 250 mL (total infusion volume) to 2.75 hours to get 90.90. Round off your final answer to the nearest whole number to get 91 mL/hour. Calculating for time: Just add 2 hours and 45 minutes to 15:00 (time started) to get 17:45.

A health care provider prescribes 1,500 mL of normal saline to be infused over seven (7) hours. The drop factor is 15 drops/mL. The nurse should set the flow rate of the IV infusion pump at how many mL per hour (mL/hour) and drops per minute (drops/minute)?

214 mL/hour 54 drops/minute Solving for the mL per hour (mL/hour) Use the IV flow rate formula (mL/hour) above. Divide 1,500 mL (total infusion volume) with 7 hours (total infusion time) to get 214.28 mL. Round off your final answer to get 214 mL/hour. 1,500ml =214.3mL/hour 7 hours Solving for the drops per minute (drops/minute) Use the IV flow rate formula above. Convert 7 hours to minutes by multiplying 7 hours to 60 minutes per hour and get 420 minutes. Divide 1,500 mL (total infusion volume) by 420 minutes (total infusion time) to get 3.57 mL/minute. Multiply 3.57 mL/minute to the drop factor of 15 drops/mL to get 53.55