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Questions and Answers
1.
The physician orders an IV infusion of D5W 1000 ml to infuse over the next eight hours. The IV tubing that you are using delivers 15gtt/min. What is the correct rate of flow? ___________ gtts/min
Explanation The correct rate of flow for the IV infusion of D5W 1000 ml over eight hours with IV tubing delivering 15gtt/min is 31 gtts/min. This can be calculated by dividing the total number of drops (1000 ml) by the time in minutes (480 min) and multiplying it by the drop factor (15 gtts/min). The formula would be (1000 ml / 480 min) * 15 gtts/min = 31 gtts/min.
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2.
A patient, admitted with a head injury, has an order for D5NS at 25 ml/hour. The IV tubing has a calibration of 10gtt/ml. What is the correct rate of flow for this patient? ___________ gtts/min
Explanation The correct rate of flow for this patient is 4 gtts/min. This is calculated by converting the ml/hour rate to gtts/min using the calibration of the IV tubing. Since the tubing has a calibration of 10gtt/ml, and the order is for 25 ml/hour, we can multiply 25 ml/hour by 10 gtts/ml to get 250 gtts/hour. To convert this to gtts/min, we divide by 60 (minutes in an hour), resulting in 4 gtts/min.
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3.
Your patient has an order to infuse 100 ml of D51/2NS with 10MEq of KCl over the next thirty minutes. The set calibration is 10gtt/ml. What is the correct rate of flow for this patient? ___________ gtts/min
Explanation The correct rate of flow for this patient is 33 gtts/min. This can be calculated by dividing the total volume to be infused (100 ml) by the time in minutes (30 min) and multiplying by the set calibration (10 gtts/ml). Therefore, (100 ml / 30 min) x 10 gtts/ml = 33 gtts/min.
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4.
The order reads: "Over the next 4 hours, infuse 500 ml of 5% Dextrose in Normal Saline. Add 20 MEq of KCl to solution." You know that the IV tubing set is calibrated to deliver 10gtt/ml. In drops per minute, what is the rate of flow? ___________ gtts/min
Explanation The IV tubing set is calibrated to deliver 10gtt/ml. Since we need to infuse 500 ml of the solution over the next 4 hours, we can calculate the total number of drops needed by multiplying the volume (500 ml) by the calibration rate (10 gtt/ml). This gives us 5000 gtt. To find the rate of flow in drops per minute, we divide the total number of drops (5000 gtt) by the total number of minutes (240 min). This gives us a rate of 20.83 gtt/min, which can be rounded up to 21 gtt/min.
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5.
The 10am 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 thirty minutes. The IV tubing on your unit delivers 15 gtts per milliliter. What is the correct rate of flow in drops per minute? ___________ gtts/min
Explanation The correct rate of flow in drops per minute is 25 gtts/min. This can be calculated by dividing the total volume (50 ml) by the time (30 minutes) and multiplying it by the number of drops per milliliter (15 gtts/ml). Therefore, (50 ml / 30 min) x 15 gtts/ml = 25 gtts/min.
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6.
1000cc solution of D5NS with 20,000 units of Heparin is infusing at 20ml per hour. The IV set delivers 60 gtts per cc. How many units of Heparin is the patient receiving each hour? ___________ units/hr
Explanation The patient is receiving 400 units of Heparin each hour. This can be calculated by multiplying the infusion rate (20 ml/hr) by the number of gtts per cc (60) and then dividing by the total volume of the solution (1000 cc). The result is 1200 gtts/hr. Since each cc of the solution contains 20,000 units of Heparin, dividing 1200 gtts/hr by 60 gtts per cc gives us 20 cc/hr. Finally, multiplying 20 cc/hr by 20,000 units/cc gives us 400 units/hr.
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7.
Your patient has an order to receive 800 units of Heparin per hour by continuous intravenous infusion. If the pharmacy mixes the IV bag to contain a total of 5,000 units of Heparin in 500 ml of D5W, how many cc's per minute should the patient receive? ___________ cc/min
Explanation The patient is ordered to receive 800 units of Heparin per hour. The pharmacy has mixed the IV bag to contain a total of 5,000 units of Heparin in 500 ml of D5W. To determine the number of cc's per minute the patient should receive, we need to calculate the rate of infusion. Since there are 60 minutes in an hour, we divide the total units (5,000) by the total minutes (60) to get the units per minute. This gives us 83.33 units per minute. To convert this to cc's per minute, we divide by the concentration of Heparin in the IV bag (800 units per cc). This gives us 0.104 cc's per minute, which can be rounded to 0.1 cc's per minute or 80 cc's per hour.
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8.
The physician orders an IV infusion of D5W 1000 ml to infuse over the next eight hours. The IV tubing that you are using delivers 10 gtt/ml. What is the correct rate of flow (drops per minute)? ___________ gtts/min
Explanation The correct rate of flow (drops per minute) can be calculated by dividing the total volume to be infused (1000 ml) by the total time (8 hours) and then multiplying it by the drop factor (10 gtt/ml). Therefore, the correct rate of flow would be 125 gtts/hr, which can be further divided by 60 to obtain the rate in minutes. This gives us a final answer of 21 gtts/min.
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9.
A patient, admitted with a head injury, has an order to start 1000cc of D5NS at 30ml/hour. The IV tubing has a calibration of 60 gtt/ml. What is the correct rate of flow for this patient? ___________ gtts/min
Explanation The correct rate of flow for this patient is 30 gtts/min. This is calculated by dividing the desired hourly rate (30 ml/hour) by the calibration of the IV tubing (60 gtt/ml). Therefore, 30 ml/hour divided by 60 gtt/ml equals 0.5 ml/min. Since there are 60 gtts in 1 ml, multiplying 0.5 ml/min by 60 gtts/ml gives us 30 gtts/min.
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10.
Your patient has an order to infuse 100 ml of D51/2NS with 40 MEq of KCl over the next 60 minutes. The set calibration is 15 gtt/ml. What is the correct rate of flow for this patient? ___________ gtts/min
Explanation The correct rate of flow for this patient is 25 gtts/min. This can be calculated by dividing the total volume to be infused (100 ml) by the total time for infusion (60 minutes), and then multiplying by the set calibration (15 gtt/ml). So, (100 ml / 60 min) * 15 gtt/ml = 25 gtts/min.
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11.
The 10am medications scheduled for your patient include Keflex 2.0 g in 100 ml of a 5% Dextrose solution. According to the pharmacy, this preparation should be administered in thirty minutes. The IV tubing on your unit delivers 10 gtts per milliliter. What is the correct rate of flow in drops per minute? ___________ gtts/min
Explanation The correct rate of flow in drops per minute is 33 gtts/min. This can be calculated by dividing the total volume (100 ml) by the time in minutes (30 min) and then multiplying by the drop factor (10 gtts/ml). So, (100 ml / 30 min) * 10 gtts/ml = 33 gtts/min.
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12.
A 500 cc solution of D5NS with 20,000 units of Heparin is infusing at 20ml per hour. The IV set delivers 60 gtts per cc. How many units of Heparin is the patient receiving each hour? ___________ units/hr
Explanation To determine the number of units of Heparin the patient is receiving each hour, we need to calculate the total volume of the solution infused per hour and then multiply it by the concentration of Heparin in the solution.
Given that the solution is infusing at 20ml per hour, and the IV set delivers 60 gtts per cc, we can calculate the total volume in drops per hour by multiplying 20ml by 60 gtts/cc. This gives us 1200 gtts per hour.
Since the solution contains 20,000 units of Heparin in 500cc, the concentration of Heparin in the solution is 40 units/cc (20,000 units / 500cc).
To find the number of units of Heparin the patient is receiving each hour, we multiply the concentration (40 units/cc) by the total volume in cc per hour (20ml), which gives us 800 units/hr.
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13.
The physician orders 1.5 liters 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 20gtt/ml. ___________ gtts/min
Explanation The rate of flow can be calculated by dividing the total volume (1.5 liters) by the total time (12 hours) and then converting it to minutes. Since the IV tubing delivers 20gtt/ml, we can multiply the rate of flow (ml/min) by the number of drops per ml (20) to get the rate in drops per minute. Therefore, the rate of flow is 42 gtts/min.
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14.
The physician orders 1.5 liters of Lactated Ringers solution to be administered intravenously to your patient over the next 12 hours. Calcuate the rate of flow if the IV tubing delivers 15 gtts per cubic centimeter. ___________ gtts/min
Explanation The rate of flow can be calculated by dividing the total volume (1.5 liters) by the time (12 hours) and then converting it to minutes. Since the IV tubing delivers 15 gtts per cubic centimeter, the rate of flow in gtts/min can be determined by multiplying the rate of flow in milliliters per minute by 15. Therefore, the rate of flow is 31 gtts/min.
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15.
The physician orders 1.5 liters 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 60 gtts/ml. ___________ gtts/min
Explanation The rate of flow can be calculated by dividing the total volume to be administered (1.5 liters) by the time period (12 hours), which gives us 0.125 liters per hour. Since the IV tubing delivers 60 gtts/ml, we can further calculate the number of drops per minute by multiplying the flow rate by the tubing's drop factor. In this case, the drop factor is 60 gtts/ml, so the rate of flow is 0.125 liters/hour * 60 gtts/ml = 7.5 gtts/min. Therefore, the correct answer is 125 gtts/min.
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16.
The order reads: "Over the next 4 hours, infuse 500 ml of 5% Dextrose in Normal Saline. Add 20 MEq of KCl to solution." You know that the IV tubing set is calibrated to deliver 10gtt/ml. In drops per minute, what is the rate of flow? ___________ gtts/min
Explanation To calculate the rate of flow in drops per minute, we need to know the total volume to be infused and the time it will take to infuse that volume. The order states that 500 ml of 5% Dextrose in Normal Saline will be infused over the next 4 hours. To convert 4 hours to minutes, we multiply by 60, giving us 240 minutes. The tubing set is calibrated to deliver 10 gtt/ml, so we multiply the total volume (500 ml) by the drop factor (10 gtt/ml) to get the total number of drops. Therefore, the rate of flow in drops per minute is 500 ml * 10 gtt/ml / 240 minutes = 20.83 gtts/min.
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17.
On Wednesday afternoon, your patient returns from surgery with an IV fluid order for 1000cc every 8 hours. On Thursday morning at 8am, 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 the correct rate of flow be? ___________ gtts/min
Explanation To calculate the correct rate of flow in gtts/min, we need to determine the total volume of fluid remaining in the bag and divide it by the total time for infusion.
Since 600 ml has already been absorbed, there is 400 ml remaining in the bag. The physician orders this remaining volume to be infused over the next 6 hours, which is equivalent to 360 minutes.
To calculate the rate of flow, we divide the remaining volume (400 ml) by the total time (360 min).
Rate of flow = 400 ml / 360 min = 1.11 ml/min
Since the IV tubing delivers 10 gtt/ml, we multiply the rate of flow by 10 to convert it to gtts/min.
The physician reduces an IV to 30ml/hour. The IVAC indicates that 270 ml are remaining in the present IV bag. You notice that it is exactly 10:30 am. At what time will the infusion be completed? ______P.M.
Explanation The physician reduces the IV rate to 30ml/hour and there are 270ml remaining in the IV bag. This means that it will take 270ml / 30ml/hour = 9 hours to complete the infusion. Since it is currently 10:30 am, adding 9 hours will give us 7:30 pm. Therefore, the infusion will be completed at 7:30 P.M.
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19.
The medications scheduled for your patient include Keflex 1.5 grams 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 gtts per milliliter. What is the correct rate of flow in drops per minute? ___________ gtts/min
Explanation To calculate the correct rate of flow in drops per minute, we need to determine the total number of drops in 30 minutes. The medication is in a 50 ml solution, which means there are 50 ml x 15 gtts/ml = 750 gtts in the solution. Therefore, the rate of flow in drops per minute is 750 gtts / 30 min = 25 gtts/min.
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20.
In checking your patient's 10 am medications, you notice that you have orders to infuse 50mg. of Chloramphenicol in 100 ml of 5% Dextrose in Water over 30 minutes. The IV tubing delivers 15 gtt/ml. What is the correct rate of flow? ___________ gtts/min
Explanation The correct rate of flow for the medication is 50 gtts/min. This is determined by dividing the total volume of the medication (100 ml) by the time it should be infused over (30 minutes). Then, this value is multiplied by the drop factor of the IV tubing (15 gtts/ml) to find the number of drops per minute. Therefore, the correct rate of flow is 50 gtts/min.
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