Advance IV Therapy Module. Example 1. 3mg. 3mg min = 45

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1 Advance IV Therapy Module Eample A patient is to receive Lidocaine at 3mg/. Supplied is a one liter bag of D 5 W containing Lidocaine 4g. Calculate the infusion rate in ml/. First, identify the doctor s order. 3mg Doctor s order = This is also known as the dose. Dose on hand = 4g 000mL 4g Supplied is Lidocaine 4g in a one liter (000mL) bag of D 5 W. This can be written as. 000mL Now solve for the infusion rate in ml/ using dimensional analysis. Doctor s order Conversion DOH Conversion Wanted Quantity 3mg g 000mg 000mL 4g = 45 The infusion rate would be 45mL/.

2 EXAMPLE 2 A diabetic is to receive an infusion of insulin at 2 units/. The nurse prepares a bag of NS with 00 units of regular insulin. What is the infusion rate in ml/? First, identify the doctor s order. Doctor s order = 2units This is also known as the dose. Dose on hand = 00units Supplied is 00 units of regular insulin in a bag of NS. This can be written as 00units. Now solve for the infusion rate in ml/ using dimensional analysis. Doctor s order DOH Wanted Quantity 2units 00units = 30 The infusion rate would be 30mL/. 2

3 EXAMPLE 3 The doctor orders Heparin at 800 units/. Available is 25,000 units in of solution. Calculate the infusion rate in ml/. First, identify the doctor s order. Doctor s order = 800units This is also known as the dose. Dose on hand = 25,000units Supplied is 25,000 units in of solution. This can be written as 25,000units. Now solve for the infusion rate in ml/ using dimensional analysis. Doctor s order DOH Wanted Quantity 800units 25,000units = 8 The infusion rate would be 8mL/. 3

4 Calculating a dose based on weight. EXAMPLE 4 The doctor orders Nipride 3mcg/kg/ to keep SBP < 40mmHg. The pharmacy supplies this in a bag of D 5 W that contains 50mg of the drug. The patient weighs 56kg. Compute the dosage in mcg/ and the infusion rate in ml/. First, identify the doctor s order. Doctor s order = 3mcg kg The doctor s order is given as 3mcg/kg/. This can be written as 3mcg. kg Dose on hand = 50mg Supplied is a bag of D 5 W that contains 50mg of the drug. This can be written as 50mg. Third, identify the patient s weight. Patient s weight = 56kg The patient s weight given is 56kg. This can be written as Now let s first solve for mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 56kg. 3mcg kg 56kg = 68mcg The dose for this patient would be 68mcg/. 4

5 Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 68mcg mg 000mcg 50mg ml ml = 50.4 = 50 The infusion rate would be 50 ml/. To check your answer, back solve. You can do this by first solving for mg/ using the dose calculated for the patient. Dose Conversion Conversion = Wanted Quantity 68mcg mg 000mcg mg mg = 0.08 = 0 Using the dose for the patient based on their weight, they should receive 0 mg/. To finish back solving, solve for mg/ using the calculated infusion rate and the DOH. DOH Infusion Rate = Wanted Quantity 50mg 50mL mg = 0 Using the DOH and the infusion, the patient should receive 0 mg/. Since both answers are equal to each other, your calculation is correct. 5

6 EXAMPLE 5 A patient weighing 252 pounds is to begin an infusion of dopae at 5mcg/kg/. The drug is supplied in a bag of NS that contains 400mg. What is the dosage in mcg/ and the infusion rate in ml/? First, identify the doctor s order. Doctor s order = 5mcg kg The doctor s order is given as 5mcg/kg/. This can be written as 5mcg. kg Dose on hand = 400mg Supplied is a bag of NS that contains 400mg. This can be written as 400mg. Third, identify the patient s weight. Patient s weight = 252lb The patient s weight given is 252lb. This can be written as 252lb. Let s first convert the patient s weight from pounds to kilograms. Patient s weight Conversion Wanted Quantity 252lb kg 2.2lb = 4.5 kg Now let s solve for mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 5mcg kg 4.5kg mcg mcg = = 573 6

7 The dose for this patient would be 573 mcg/. Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 573mcg mg 000mcg 400mg ml ml = 2.48 = 2 The infusion rate would be 2 ml/. To check your answer, back solve. You can do this by first solving for mg/ using the dose calculated for the patient. Dose Conversion Conversion = Wanted Quantity 573mcg mg 000mcg mg mg = = 34 Using the dose for the patient based on their weight, they should receive 34 mg/. To finish back solving, solve for mg/ using the calculated infusion rate and the DOH. DOH Infusion Rate = Wanted Quantity 400mg 2mL mg mg = 33.6 = 34 Using the DOH and the infusion, the patient should receive 34 mg/. Since both answers are equal to each other, your calculation is correct. 7

8 EXAMPLE 6 A patient weighing 98 kg is to receive an infusion of dobutae at 5mcg/kg/. Available is 500mg in of solution. What is the dosage in mcg/ and the infusion rate in ml/? First, identify the doctor s order. Doctor s order = 5mcg kg The doctor s order is given as 5mcg/kg/. This can be written as 5mcg. kg Dose on hand = 500mg Supplied is 500mg in of solution. This can be written as 500mg. Third, identify the patient s weight. Patient s weight = 98kg The patient s weight given is 98kg. This can be written as Now let s first solve for mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 98kg. 5mcg kg 98kg = 490mcg The dose for this patient would be 490mcg/. 8

9 Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 490mcg mg 000mcg 500mg ml ml = 4.7 = 5 The infusion rate would be 5 ml/. To check your answer, back solve. You can do this by first solving for mg/ using the dose calculated for the patient. Patient s Dose Conversion Conversion = Wanted Quantity 490mcg mg 000mcg mg mg = 29.4 = 29 Using the dose for the patient based on their weight, they should receive 29 mg/. To finish back solving, solve for mg/ using the calculated infusion rate and the DOH. DOH Infusion Rate = Wanted Quantity 500mg 5mL mg = 30 Using the DOH and the infusion, the patient should receive 30 mg/. Since both answers are equal to each other, your calculation is correct. 9

10 EXAMPLE 7 A dose of 6mcg/kg/ is ordered to infuse IV to sustain the blood pressure of an adult weighing 75 kg. The supplied solution contains 500mg in of D 5 W. Calculate the dose in mcg/ and the infusion rate in ml/. First, identify the doctor s order. Doctor s order = 6mcg kg The doctor s order is given as 6mcg/kg/. This can be written as 6mcg. kg Dose on hand = 500mg The supplied solution contains 500mg in of D 5 W. This can be written as 500mg. Third, identify the patient s weight. Patient s weight = 75kg The patient s weight given is 75 kg. This can be written as Now let s first solve for mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 75kg. 6mcg kg 75kg mcg = 450 The dose for this patient would be 450 mcg/. Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 0

11 450mcg mg 000mcg 500mg ml ml = 3.6 = 4 The infusion rate would be 4 ml/. To check your answer, back solve. You can do this by first solving for mg/ using the dose calculated for the patient. Dose Conversion Conversion = Wanted Quantity 450mcg mg 000mcg mg = 27 Using the dose for the patient based on their weight, they should receive 27mg/. To finish back solving, solve for mg/ using the calculated infusion rate and the DOH. DOH Infusion Rate = Wanted Quantity 500mg 4mL mg = 28 Bo 4 Using the DOH and the infusion, the patient should receive 28 mg/. Since both answers are equal to each other, your calculation is correct.

12 EXAMPLE 8 The order is to infuse a solution of 50mg in D 5 W at 0.8mcg/kg/. Calculate the dose in mcg/ and the flow rate in ml/ of a patient weighing 66 kg. First, identify the doctor s order. Doctor s order = 0.8mcg kg The doctor s order is given as 0.8mcg/kg/. This can be written as 0.8mcg. kg Dose on hand = 50mg The supplied solution contains 50mg in D 5 W. This can be written as 50mg. Third, identify the patient s weight. Patient s weight = 66kg The patient s weight given is 66 kg. This can be written as Now let s first solve for mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 66kg. 0.8mcg kg 66kg = 52.8mcg 53mcg = The dose for this patient would be 53 mcg/. Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. 2

13 Patient s dose Conversion DOH Conversion Wanted Quantity 53mcg mg 000mcg 50mg ml ml = 5.9 = 6 The infusion rate would be 6 ml/. To check your answer, back solve. You can do this by first solving for mg/ using the dose calculated for the patient. Dose Conversion Conversion = Wanted Quantity 53mcg mg 000mcg mg mg = 3.8 = 3 Using the dose for the patient based on their weight, they should receive 3 mg/. To finish back solving, solve for mg/ using the calculated infusion rate and the DOH. DOH Infusion Rate = Wanted Quantity 50mg 6mL mg mg = 3.2 = 3 Using the DOH and the infusion, the patient should receive 3 mg/. Since both answers are equal to each other, your calculation is correct. 3

14 Titrations EXAMPLE 9 A medication is ordered at a rate of 4mg/. The solution strength is 2g in 500mL D 5 W. What is the infusion rate range in ml/? What would the manual infusion rate be in gtt/ for a microdrip IV set (60gtt/mL)? 4mg Doctor s order = This is also known as the dose. NOTE: The healthcare provider must change the flow rate of the drug from time to time depending on how the patient is responding and thus must constantly monitor the patient s vital signs in order to titrate the dose (rate of adistration) of a drug correctly. To do this, infusion rate must be calculated at the lower end of the range and then again at the higher end of the range to detere the rate of adistration. Dose on hand = 2g 500mL The solution strength is 2g in 500mL D 5 W. This can be written as 2g. 500mL Now solve for the infusion rate at the lower end of the range in ml/ using dimensional analysis. Doctor s order Conversion DOH Conversion Wanted Quantity mg g 000mg 500mL 2g = 5 The infusion rate at the lower end of the range would be 5mL/. Now solve for the infusion rate at the higher end of the range in ml/ using dimensional analysis. Doctor s order Conversion DOH Conversion Wanted Quantity 4mg g 000mg 500mL 2g = 60 4

15 The infusion rate at the higher end of the range would be 60mL/. The range is 5 60mL/. Now let s calculate the drip rate (gtt/) for the lower end of the infusion rate. Infusion Rate Drop Factor Conversion Wanted Quantity 5mL 60gtt ml = 5gtt The drip rate for the lower end of the infusion rate is 5gtt Now let s calculate the drip rate (gtt/) for the higher end of the infusion rate. Infusion Rate Drop Factor Conversion Wanted Quantity 60mL 60gtt ml = 60gtt The drip rate for the lower end of the infusion rate is The drip rate range is also 5 60 gtt/ 60gtt 5

16 Calculate dosages using mg/kg and mcg/kg EXAMPLE 0 A patient weighing 60 pounds is to receive a titrated infusion of a medication between 5 0mcg/kg/. The supplied solution contains 00mg in 40mL of NS. What is the dose range in mcg/? What is the manual infusion rate range in gtt/ for a microdrip IV set (60gtt/)? The client stabilizes at 6mL/. What is the stabilizing dose in mcg/? First, identify the doctor s order. Doctor s order = 5 0mcg kg This is also known as the dose. NOTE: The healthcare provider must change the flow rate of the drug from time to time depending on how the patient is responding and thus must constantly monitor the patient s vital signs in order to titrate the dose (rate of adistration) of a drug correctly. To do this, infusion rate must be calculated at the lower end of the range and then again at the higher end of the range to detere the rate of adistration. Dose on hand = 00mg 40mL The supplied solution contains 00mg in 40mL of NS. This can be written as 00mg. 40mL Third, identify the patient s weight. Patient s weight = 60lb The patient s weight given is 252lb. This can be written as 60lb. Let s first convert the patient s weight from pounds to kilograms. Patient s weight Conversion Wanted Quantity 60lb kg 2.2lb = 72.7 kg Using the conversion kg = 2.2 lb we can detere the patients weight to be 72.7 kg. 6

17 Now let s solve for the dose at the lower end of the range in mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 5mcg kg 72.7kg mcg mcg = = 364 The dose for this patient at the lower end of the range would be 364mcg/. Now let s solve for the dose at the higher end of the range in mcg/ using dimensional analysis. Doctor s order Patient s weight Wanted Quantity 0mcg kg 72.7kg = 727mcg The dose for this patient at the higher end of the range would be 727mcg/. Dose range mcg/ Now that you know the dose range for the patient, calculate the infusion rate in ml/ at the lower end of the range using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 364mcg mg 000mcg 40mL 00mg ml ml = 8.7 = 9 The infusion rate would be 9 ml/ at the lower end of the dose range. Now that you know the dose range for the patient, calculate the infusion rate in ml/ at the higher end of the range using dimensional analysis. Patient s dose Conversion DOH Conversion Wanted Quantity 727mcg mg 000mcg 40mL 00mg ml ml = 7.4 = 7 The infusion rate would be 7 ml/ at the higher end of the dose range. 7

18 The infusion rate range is 9 7 ml/. Now let s calculate the manual infusion rate (gtt/) for the lower end of the infusion rate. Infusion Rate Drop Factor Conversion Wanted Quantity 9mL 60gtt ml gtt = 9 9gtt The drip rate for the lower end of the infusion rate is Now let s calculate the manual infusion rate (gtt/) for the higher end of the infusion rate. Infusion Rate Drop Factor Conversion Wanted Quantity 7mL 60gtt ml gtt = 7 The drip rate for the lower end of the infusion rate is The manual infusion rate range is also 9 7 gtt/ 7gtt Lastly, let s detere the stabilizing dose in mcg/ using the patient s stabilizing rate of 6mL/. Stabilizing Rate DOH Conversion Conversion Wanted Quantity 6mL 00mg 40mL 000mcg mg = mcg 667mcg = The stabilizing dose for this patient would be 667mcg/. 8

19 PRACTICE PROBLEM The nurse must prepare an infusion at 20mg/. Supplied is g in 500 ml of D 5 W. Compute the infusion rate in ml/. First, identify the doctor s order. answer 20mg/ The doctor s order is 20mg/. This is also known as the dose. It can be written as 20mg answer g/500ml Supplied is g in 500 ml of D 5 W. This can be written as g. 500mL Now solve for the infusion rate in ml/ using dimensional analysis. answer of 0 Doctor s order Conversion DOH Wanted Quantity 20mg g 000mg 500mL g ml = The infusion rate would be 0mL/. Doctor s order Conversion DOH Wanted Quantity 20mg g 000mg 500mL g ml = 0 9

20 PRACTICE PROBLEM 2 The nurse enters the room to assess the IV and notes that a client was ordered to receive an infusion at 750units/. The supplied bag contains 25,000 units in a bag of D 5 W. The IV pump is set at 45mL/. Is this a correct setting for the dose ordered? If not, what is the correct setting indicated for the dose ordered? First, identify the doctor s order. answer 750units/ The doctor s order is 750units/. This is also known as the dose. It can be written as answer 25,000units/ 750units The supplied bag contains 25,000 units in a bag of D 5 W. This can be written as 25,000units. Now solve for the infusion rate in ml/ using dimensional analysis. answer of 8 Doctor s order DOH Wanted Quantity 750units 25,000units ml = After two tries with incorrect answer, The infusion rate would be 8 ml/. Doctor s order DOH Wanted Quantity 750units 25,000units ml = 8 Was the IV pump set at the correct infusion rate? Yes or no answer is no The infusion rate on the IV pump was set at 45mL/. This is not the correct rate that was detered. The IV pump should have been set at 8 ml/. The answer is no. 20

21 PRACTICE PROBLEM 3 Ordered is an infusion at 6mcg/kg/. Available is 500mg contained in 0.5L bag of NS. The patient weighs 50 pounds. Calculate the infusion rate in mcg/ and ml/. First, identify the doctor s order. answer 6mcg/kg/ Remember this is also known as the dose. The doctor s order is 6mcg/kg/. This is also known as the dose. It can be written as 6mcg kg answer 500mg/500mL Remember this is what is supplied or available to you. After two tries with incorrect answer, Available is 500mg contained in 0.5L bag of NS. This can be 500mg written as. Remember L = 000 ml therefore, 0.5 L = 500 ml. 500mL Third, identify the patient s weight in kilograms. answer 68.2 kg Remember to convert from pounds to kilograms. The patient s weight given is 50lb. Patient s weight Conversion Wanted Quantity 50lb kg 2.2lb = 68.2 kg The patient weights 68.2 kg. Now let s solve for mcg/ using dimensional analysis. units should also cancel user should be able to type in answer of 409 2

22 Doctor s order Patient s weight Wanted Quantity 6mcg kg 68.2kg mcg = After two tries with incorrect answer, Remember to set up your problem so that the proper units cancel. Doctor s order Patient s weight Wanted Quantity 6mcg kg 68.2kg = 409mcg The dose for this patient is 409 mcg/. Now solve for the infusion rate in ml/ using dimensional analysis. answer of 25 Patient s Dose Conversion DOH Conversion Wanted Quantity 409mcg mg 000mcg 500mL 500mg ml = After two tries with incorrect answer, The infusion rate would be 25 ml/ using the dose for the patient based on their weight. Patient s Dose Conversion DOH Conversion Wanted Quantity 409mcg mg 000mcg 500mL 500mg ml = 25 PRACTICE PROBLEM 4 A patient weighing 25 pounds is to receive a drug at 2mcg/kg/. Available is 500mg in of D 5 W. Calculate mcg/ and ml/. First, identify the doctor s order. answer 2mcg/kg/ After two tries with incorrect answer, The doctor s order is 2mcg/kg/. This is also known as the 2mcg dose. It can be written as kg 22

23 answer 500mg/ If correct, Correct! If incorrect, Try again. Remember this is what is supplied or available to you. After two tries with incorrect answer, Available is 500mg in of D 5 W. This can be written as 500mg. Third, identify the patient s weight in kilograms. answer 56.8kg After two tries with incorrect answer, The patient s weight given is 25lb. Patient s weight Conversion Wanted Quantity 25lb kg 2.2lb = 56.8 kg The patient weights 56.8 kg. Now let s solve for mcg/ using dimensional analysis. answer of 4 Doctor s order Patient s weight Wanted Quantity 2mcg kg 56.8kg mcg = After two tries with incorrect answer, Remember to set up your problem so that the proper units cancel. Doctor s order Patient s weight Wanted Quantity 2mcg kg 56.8kg = 4mcg The dose for this patient is 4mcg/. Now solve for the infusion rate in ml/ using dimensional analysis. answer of 3 23

24 Patient s Dose Conversion DOH Conversion Wanted Quantity 4mcg mg 000mcg 500mg ml = The infusion rate would be 3 ml/ using the dose for the patient based on their weight. Patient s Dose Conversion DOH Conversion Wanted Quantity 4mcg mg 000mcg 500mg ml = 3 24

25 PRACTICE PROBLEM 5 An adult has an order for 250mg in 500ml D 5 W to infuse between 0.5 and 0.7 mg/kg/. The patient weighs 82kg. This patient stabilizes at 75mL/. What is the dose range the flow rate range and the stabilizing dose/? First, identify the doctor s order. answer mg/kg/ The doctor s order, or the dose, is to infuse between 0.5 and 0.7 mg/kg/. This can be written as mg kg Remember the infusion rate must be calculated at the lower end of the range and then again at the higher end of the range to detere the rate of adistration. answer 250mg/500mL After two tries with incorrect answer, The supplied solution contains 250mg in 500ml D 5 W. This can be 250mg written as. 500mL Third, identify the patient s weight. answer 82kg After two tries with incorrect answer, The patient s weight given is 82kg. This can be written as Now solve for the dose at the lower end of the range in mg/ using dimensional analysis. answer of 4 Doctor s order Patient s weight Wanted Quantity 82kg. 0.5mg kg 82kg mg = After two tries with incorrect answer, The dose for this patient at the lower end of the range would be 4mg/. 25

26 Doctor s order Patient s weight Wanted Quantity 0.5mg kg 82kg = 4mg Now solve for the dose at the higher end of the range in mg/ using dimensional analysis. answer is 57 Doctor s order Patient s weight Wanted Quantity 0.7mg kg 82kg mg = After two tries with incorrect answer, The dose for this patient at the lower end of the range would be 57mg/. Doctor s order Patient s weight Wanted Quantity 0.7mg kg 82kg = 57.4mg 57mg = Now that you know the dose range for the patient, calculate the infusion rate in ml/ at the lower end of the range using dimensional analysis. answer is 82 Patient s dose DOH Wanted Quantity 4mg 500mL 250mg ml = The infusion rate would be 82mL/ at the lower end of the dose range. Patient s dose DOH Wanted Quantity 4mg 500mL 250mg ml = 82 Now that you know the dose range for the patient, calculate the infusion rate in ml/ at the higher end of the range using dimensional analysis. answer is 4 Patient s dose DOH Wanted Quantity 26

27 57mg 500mL 250mg ml = The infusion rate would be 4mL/ at the higher end of the dose range. Patient s dose DOH Wanted Quantity 57mg 500mL 250mg ml = 4 The infusion rate range is 82 4mL/. What is the patient s stabilizing rate? answer is 75mL/ If correct, Correct! Remember this is the rate given that the patient stabilizes at. This patient stabilizes at 75mL/. It can be written as 75mL. Lastly, detere the stabilizing dose in mg/ using the patient s stabilizing rate. answer of 38 Stabilizing Rate DOH Wanted Quantity 75mL 250mg 500mL mg = After two tries with incorrect answer, The stabilizing dose for this patient would be 38 mg/. Stabilizing Rate DOH Wanted Quantity 75mL 250mg 500mL mg = 38 27

28 PRACTICE PROBLEM 6 An infusion containing 50mg in of D 5 W is infusing at a rate of 46mL/. The patient weighs 75 pounds. What is the dosage infusing in mcg/kg/? Normally you are given the doctor s order. In this problem, you will detere what the doctor s order is in mcg/kg/ using the dose on hand and infusion rate and the patient s weight. First, identify the infusion rate. answer 46mL/ Remember this is the rate the medication is infusing at. After two tries with incorrect answer, The infusion rate is given as 46mL/. This can be written as 46mL. answer 50mg/ Remember this is what is supplied. After two tries with incorrect answer, The supplied solution contains 50mg in 250ml D 5 W. This can be 50mg written as. Third, identify the patient s weight in kilograms. answer 79.5 kg Remember to convert from pounds to kilograms. The patient s weight given is 75lb. Patient s weight Conversion Wanted Quantity 75lb kg 2.2lb = 79.5 kg The patient weights 79.5 kg. Now solve for mcg/kg/ using dimensional analysis. answer 2 28

29 Infusion rate DOH Conversion Conversion Patient s weight Wanted Quantity 46mL 50mg 000mcg mg 80kg = mcg kg Infusion rate DOH Conversion Conversion Patient s weight Wanted Quantity 46mL 50mg 000mcg mg 79.5kg = 2 mcg kg 29

30 PRACTICE PROBLEM 7 A patient weighing 235 pounds must receive 5mg/kg over 30 utes. Supplied is a syringe with 500mg in 0mL of solution. What is the infusion rate in ml/? First, identify the doctor s order. answer 5mg/kg/30 Remember this is also known as the dose. After two tries with incorrect answer, The doctor s order is 5mg/kg over 30 utes. This is also known 5mg as the dose. It can be written as kg30 answer 500mg/0mL Remember this is what is supplied or available to you. After two tries with incorrect answer, Supplied is a syringe with 500mg in 0mL of solution. This can be 500mg written as. 0mL Third, identify the patient s weight in kilograms. answer 06.8 kg Remember to convert from pounds to kilograms. After two tries with incorrect answer, The patient s weight given is 235lb. Patient s weight Conversion Wanted Quantity 235lb kg 2.2lb = 06.8 kg The patient weights 07 kg. Now solve for the infusion rate in ml/ using dimensional analysis. answer of 2 Doctor s Order DOH Conversion Patient s Weight Wanted Quantity 5mg kg30 0mL 500mg 06.8kg ml = 30

31 After two tries with incorrect answer, The infusion rate would be 2 ml/ using the dose for the patient based on their weight and the time to infuse it at. Doctor s Order DOH Conversion Patient s Weight Wanted Quantity 5mg kg30 0mL 500mg 06.8kg ml = 2 3

32 PRACTICE PROBLEM 8 An infusion of a drug is progressing at 22 ml/. The strength supplied is 50mg in. If the patient weighs 70 pounds, what is the dosage received in mcg/kg/? Normally you are given the doctor s order. In this problem, you will detere what the doctor s order is in mcg/kg/ using the dose on hand and infusion rate and the patient s weight. First, identify the infusion rate. answer 22mL/ Remember this is the rate the medication is infusing at. After two tries with incorrect answer, The infusion rate is given as 22mL/. This can be written as 22mL. answer 50mg/ Remember this is what is supplied. After two tries with incorrect answer, The supplied solution contains 50mg in 250ml D 5 W. This can be 50mg written as. Third, identify the patient s weight in kilograms. answer 77.3 kg Remember to convert from pounds to kilograms. After two tries with incorrect answer, The patient s weight given is 70 lb. Patient s weight Conversion Wanted Quantity 70lb kg 2.2lb = 77.3 kg The patient weights 77.3 kg. Now solve for mcg/kg/ using dimensional analysis. answer 32

33 Infusion rate DOH Conversion Conversion Patient s weight Wanted Quantity 22mL 50mg 000mcg mg 77.3kg = mcg kg After two tries with incorrect answer, Remember to set up your problem so that the proper units cancel. Infusion rate DOH Conversion Conversion Patient s weight Wanted Quantity 22mL 50mg 000mcg mg 77.3kg mcg mcg = 0.95 = kg kg 33

34 PRACTICE PROBLEM 9 The doctor orders a dose of 8mcg/kg/ IV for a 98 pound patient. The pharmacy supplies 00mg in 00mL of NS. What is the infusion rate in ml/? First, identify the doctor s order. answer 8mcg/kg/ Try again. Remember this is also known as the dose. After two tries with incorrect answer, The doctor s order is 5mg/kg over 30 utes. This is also known 8mcg as the dose. It can be written as kg answer 00mg/00mL Remember this is what is supplied or available to you. After two tries with incorrect answer, The pharmacy supplies 00mg in 00mL of NS. This can be 00mg written as. 00mL Third, identify the patient s weight in kilograms. answer 90 kg Remember to convert from pounds to kilograms. After two tries with incorrect answer, The patient s weight given is 98 lb. Patient s weight Conversion Wanted Quantity 98lb kg 2.2lb = 90 kg The patient weights 90 kg. Now first solve for mcg/ using dimensional analysis. answer 720 mcg/ Doctor s order Patient s weight Wanted Quantity 8mcg kg 90kg mcg = 34

35 The dose for this patient would be 720mcg/. Doctor s order Patient s weight Wanted Quantity 8mcg kg 90kg = 720mcg Now that you know the dose for the patient, calculate the infusion rate in ml/ using dimensional analysis. answer is 43 Patient s dose Conversion DOH Conversion Wanted Quantity 720mcg mg 000mcg 00mL 00mg ml = 43 After two tries with incorrect answer, The infusion rate would be 43 ml/ using the dose for the patient based on their weight and the time to infuse it at. 35

36 PRACTICE PROBLEM 0 A drug is infusing at 25mL/ for a patient weighing 50 kg. The supplied solution contains 250mg in. What is the dosage in mg/kg/? Normally you are given the doctor s order. In this problem, you will detere what the doctor s order is in mcg/kg/ using the dose on hand and infusion rate and the patient s weight. First, identify the infusion rate. answer 25mL/ Remember this is the rate the medication is infusing at. After two tries with incorrect answer, The infusion rate is given as 25mL/. This can be written as 25mL. answer 250mg/ Remember this is what is supplied. After two tries with incorrect answer, The supplied solution contains 250mg in. This can be 250mg written as. Third, identify the patient s weight in kilograms. answer 50 kg This is given in the problem. After two tries with incorrect answer, The patient s weight given is 50 kg. Now solve for mg/kg/ using dimensional analysis. answer Infusion rate DOH Patient s weight Wanted Quantity 25mL 250mg 50kg mg = kg 36

37 After two tries with incorrect answer, Remember to set up your problem so that the proper units cancel. Infusion rate DOH Patient s weight Wanted Quantity 25mL 250mg 50kg mg = kg 37

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