Dose Calculation Practice Problems with Answers

1. DOSAGE CALCULATION 2. The healthcare provider prescribed digoxin 0.125 mg IV. The label on the bottle reads 0.25 mg/2 mL. How many mL will be administered? 3. The healthcare provider prescribed 0.1 mg tablets; the tablets are 100 mcg each. How many tablets will be administered to the patient? 4. The healthcare provider prescribed 40 mg Inderal by mouth. Tablets are 0.08 gram each (scored). How many tablets equal the ordered dosage? 5. The healthcare provider prescribed 1200 mg aspirin. Each tablet is 0.3 gram. How many tablets equal 1200 mg? 6. The healthcare provider prescribed 0.2 gram intramuscular injection of trimethobenzamide hydrochloride. Provided: 5 mL vial labeled 100 mg/mL How many mL will be given? 7. The healthcare provider prescribed 40 mg of halazepam P.O. The tablets are 0.04 gram each. How many tablets will be administered to the patient? 8. The healthcare provider prescribed 30 mg of temazepam capsules 0.03 g each. How many capsules will be given to the patient? 9. The healthcare provider prescribed 1000 mg of sucralfate by mouth. Tablets are supplied in 1 gram tablets. How many tablets will be administered to the patient? 10. How many tablets will the nurse give a patient to administer 0.015 gram by mouth of maprotiline hydrochloride from a bottle containing tablets labeled 30 mg each? 11. The healthcare provider prescribed 0.08 gram gentamicin IM. The label on the vial reads 40 mg/1 mL. How many mL equal 0.08 gram? 12. The healthcare provider prescribed 1 gram of streptomycin IM. The label reads 500 mg/1 mL. How many mL equal 1 gram of streptomycin? 13. A healthcare provider prescribed captopril 100 mg, and each tablet contains 0.1 gram. How many tablets will the nurse administer to the patient? 14. The healthcare provider prescribed 0.0001 gram of digoxin and the tablets are 0.1 mg. How many tablets will the nurse administer to the patient? 15. The healthcare provider prescribed 40 mg of halazepam. How many 0.04 gram tablets should the nurse give to the patient? 16. A healthcare provider prescribed 0.15 gram of maprotiline for a patient. How many 50 mg tablets will the nurse give? 17. The nurse has a prescription for 60 mg of temazepam to a patient. How many 0.06 gram capsules will the nurse give the patient? 18. The nurse receives a prescription for 0.3 gram of trimethobenzamide intramuscular injection. The nurse has a 5 mL vial labeled "100 mg/mL." How many mL will the nurse give? 19. The healthcare provider prescribed 2000 mg of sucralfate. How many 1 gram tablets will you give the patient? 20. If a vial label reads 8 mg/mL, how many mL equal 20 mg? 21. The nurse has a prescription to give a patient digoxin 0.04 mg by mouth from a bottle labeled: 0.01 mg/mL. 22. The healthcare provider prescribed 400 mg Intramuscular injection of a drug. The directions on the label read as follows: Add 3.6 mL of sterile water to this vial and 150 mg = 1 mL. How many milliliters will equal 400 mg? 23. The label reads 8 mg/4 mL. How many mL will be equal to 20 mg? 24. Verapamil hydrochloride can be obtained in 2 mL vials containing 5 mg each. How many mL are equivalent to 0.01 gram? 25. The patient has a prescription for 400 mg of quinidine gluconate Intramuscular injection. The label reads: 10 mL (80 mg/1 mL). How many milliliters will the nurse administer to this patient? 26. A healthcare provider prescribed 500,000 units IM of penicillin. The label reads: Add 8.2 mL to this vial and 1 mL = 300,000 units. How many milliliters equal 500,000 units? 27. The healthcare provider prescribed 100 mcg of flunisolide by nasal spray. The label on the vial identifies 6.25 mg of the drug in 25 mL. How many mcg are contained in each milliliter? 28. The healthcare provider prescribed 600 mg of quinidine gluconate Intramuscular injection. The label reads as follows: "10 mL (60 mg/1mL)." How many mL will the nurse give the patient? 29. A healthcare provider prescribed 750,000 units Intramuscular injection of penicillin. The vial label reads: "Add 8.2 mL of diluent to this vial; 1 mL=300,000 units." How many mL will be given? 30. The healthcare provider prescribed 0.1 mg of liothyronine sodium. How many 100 mcg tablets will the nurse administer? 31. A healthcare provider prescribed 200 mg of acetazolamide. The 10 mL vial is labeled: "500 mg/5 mL." How many mL will the nurse administer? 32. The healthcare provider prescribed 25 mg of amitriptyline IM. You have a 10 mL vial containing 10 mg/mL. How many mL will the nurse give him? 33. The healthcare provider prescribed 20 mEq of potassium chloride. The label on a 100 mL bottle reads: "4 mL = 4 mEq." How many mLs will the nurse give the patient? 34. The healthcare provider prescribed digoxin 0.25 mg IV. The label on the bottle reads 0.5 mg = 2 mL. How many mL will the nurse administer? 35. The healthcare provider prescribed 2,500 units of Heparin subcutaneous every 6 hrs. The vial reads: 5,000 units/mL. Calculate the dosage in mL. 36. The healthcare provider prescribed KCL 16 mcg, and the nurse has on hand KCL 20 mcg/10 mL. How many mL will the nurse give? 37. The healthcare provider prescribed 35 mg of hydroxyzine. The nurse has on hand 50 mg/1 mL. How many mL will the nurse give? 38. The patient's digoxin 0.125 mg was changed from P.O. to IV. The vial reads 500 mcg per 2 mLs. How many mL will the nurse give IV? 39. The nurse is to administer 300 mg of a drug intramuscularly. The vial label reads: "Add 3.6 mL of sterile water to yield; 125 mg = 1 mL." How many mL equal 300 mg? 40. The nurse is to administer haloperidol 4.5 mg Intramuscular injection Stat. On hand: 5 mg/mL. How many mL will the nurse give to the patient? 41. How many mL will the nurse give for a prescription for 200 mg of cefadroxil from a bottle labeled 0.1 gram/5 mL? 42. The patient is receiving 1000 mL D5W with 40 mEq KCL infusing at 100 mL per hr. How many mEq KCL will the patient receive in one hour? 43. The healthcare provider prescribed hydralazine 9 mg intramuscular injection every 4 hours for a SBP more than 180 mmHg. On hand: 20 mg/mL. How many mL will the nurse give? 44. Penicillin G potassium 20,000 units was prescribed, and the label on the 60 mL bottle reads: penicillin G potassium 100,000 units per 5 mL. How many mL does the nurse give? 45. The healthcare provider prescribed 0.4 mg of atropine as a preop medication. It comes in a 2 mL vial. The label reads 0.5 mg/mL. How many mL will the nurse give? 46. How many mL would the nurse give for a prescription for 200 mg of cefadroxil from a bottle labeled 0.1 gram/5 mL? 47. The healthcare provider prescribed heparin 6,000 units subcutaneous injection every 6 hours. The label reads: 10,000 units/mL. How many mL will the nurse give to the patient? 48. The healthcare provider prescribed digoxin 0.5 mg PO. Check apical rate. Calculate the dosage in mcg. 49. The healthcare provider prescribed trimethobenzamide 150 mg Intramuscular injection every 6 hours PRN nausea. The label reads: 200 mg/2 mL. How many mL will your patient receive? 50. The healthcare provider prescribed dicyclomine 25 mg Intramuscular injection every 6 hours. The label on the vial reads: 15 mg/mL. How many mL will the nurse give the patient? 51. The healthcare provider prescribed dicyclomine 18 mg Intramuscular injection every 4 hours. The label reads: 20 mg/2mL. How many mL will the nurse give the patient? 52. The healthcare provider prescribed cefoperazone 1.5 gram IV every 12 hours. The label on the vial reads: 333 mg/mL. How many mL. will the nurse give the patient? 53. The healthcare provider prescribed cefoperazone 1.2 gram IV every 12 hours. The label reads: 250 mg/mL. How many mL will the nurse give the patient? 54. The healthcare provider prescribed cefoperazone 800 mg IV every 8 hours. On hand: 333 mg/mL. How many mL will the nurse give the patient? 55. The healthcare provider prescribed haloperidol 2.5 mg IM every 6 hours. The label reads: 5 mg/mL. How many mL will the nurse give the patient? 56. The healthcare provider prescribed haloperidol 3.5 mg Intramuscular injection now. The label reads: 5 mg/mL. How many mL will the nurse give the patient? 57. The healthcare provider prescribed Heparin 6,500 units subcutaneous injection every 6 hours. On hand: 10,000 units/mL vial. How many mL will the nurse give the patient? 58. The healthcare provider prescribed Heparin 4,000 units IV push every 4 hours. On hand: 5,000 Units/mL vial. How many mL will the nurse give the patient? 59. The healthcare provider prescribed 1 liter of D5W with 25 mEq KCL IV to run at 40 mL/hr. How many mEq/hr of KCL is the patient receiving? 60. The healthcare provider prescribed cefamandole 1.35 grams IV every 12 hours. On hand: 500 mg/mL. How many mL will the nurse give the patient? 61. The healthcare provider prescribed vancomycin 775 mg IV every 6 hours. The label on the vial reads: 500 mg/10 mL. How many mL will the nurse give the patient? 62. The healthcare provider prescribed vancomycin 0.5 gram IV every 6 hours. The label reads: 500 mg/10 mL. How many mL will the nurse give the patient? 63. The healthcare provider prescribed hydroxyzine 30 mg Intramuscular injection every 4 hours PRN. The label on the vial reads: 75 mg/1.5 mL. How many mL will the nurse give the patient? 64. The healthcare provider prescribed hydroxyzine 50 mg Intramuscular injection every 6 hours PRN. The label reads: 75 mg/1.5 mL. How many mL will the nurse give the patient? 65. The healthcare provider prescribed 2,500 units of Heparin subcutaneous injection every 6 hours. The vial reads: 5,000 units/mL. How many mL will the nurse give the patient? 66. The healthcare provider prescribed digoxin 0.125 mg IV daily. The healthcare provider prescribed an additional 0.125 mg to be given this morning. The ampule reads Digoxin 500 mcg/2 mL. How many mL will the nurse give the patient? 67. The healthcare provider prescribed methyldopa 400 mg IV every 6 hrs. On hand: 250 mg/5 mL. How many mL will the nurse give the patient? 68. The healthcare provider prescribed ampicillin 650 mg intramuscular injection every 8 hours. On hand: 500 mg/2 mL. How many mL will the nurse give the patient? 69. The healthcare provider prescribed ampicillin 750 mg intramuscular injection every 8 hours. On hand: 1 gram/4 mL. How many mL will the nurse give the patient? 70. The healthcare provider prescribed aminophylline 250 mg IV every 6 hrs. On hand: 500 mg/20 mL. How many mL will the nurse give the patient? 71. The healthcare provider prescribed prochlorperazine 6 mg intramuscular injection every 8 hours PRN. On hand: 5 mg/mL. How many mL will the nurse give the patient? 72. The healthcare provider prescribed prochlorperazine 8.5 mg intramuscular injection every 8 hours times 3 doses. On hand: 5 mg/mL. How many mL will the nurse give the patient? 73. The healthcare provider prescribed cyanocobalamin 150 mcg IM this morning. On hand: 1,000 mcg/mL. How many mL will the nurse give the patient? 74. The healthcare provider prescribed meperidine 70 mg intramuscular injection every 3-4 hours PRN Pain. On hand: 75 mg/mL. How many mL will the nurse give the patient? 75. The healthcare provider prescribed hydromorphone 1.5 mg intramuscular injection every 4-6 hours PRN. On hand: 2 mg/mL ampule. How many mL will the nurse give the patient? 76. The healthcare provider prescribed hydromorphone 1.4 mg subcutaneous injection every 4 hours PRN. On hand: 2 mg/mL ampule. How many mL will the nurse give the patient? 77. The healthcare provider prescribed hydromorphone 2 mg intramuscular injection every 6 hours PRN. On hand: 4 mg/mL ampule. How many mL will the nurse give the patient? 78. The healthcare provider prescribed epinephrine 0.8 mg Stat subcutaneous injection. On hand: 1:1000 Solution 1 mg/mL. How many mL will the nurse give the patient? 79. The healthcare provider prescribed aminophylline 70 mg IV every 8 hours. On hand: 210 mg/10 mL. How many mL will the nurse give the patient? 80. The nurse has to reconstitute the prescribed aminophylline 900 mg. On hand: 500 mg aminophylline/20 mL normal saline. How many mL of normal saline has to be added to reconstitute the mediation? 81. The healthcare provider prescribed aqua mephyton 0.01 gram intramuscular injection now. On hand: 10 mg/mL. How many mL will the nurse give the patient? 82. The healthcare provider prescribed aqua mephyton 13 mg subcutaneous injection now. On hand: 10 mg/mL. How many mL will the nurse give the patient? 83. The healthcare provider prescribed hydralazine 35 mg IV Stat. On hand: 20 mg/mL. How many mL will the nurse give the patient? 84. CALCULATING MCG/KG/MIN 1. The healthcare provider prescribed 250 mL D5W 0.45 NS with 250 mg dopamine at 8 mcg/kg/min. Client weight: 70 kg. Calculate mL/hr. 2. The healthcare provider prescribed 250 mL of D5W, with 250 mg of dobutamine HCI, I.V. The patient weighs 150 pounds and is to receive 6 mcg/kg/minute of the dobutamine. Calculate mL/hr. 3. The healthcare provider prescribed 250 mL D5W 0.45 NS with 200 mg dopamine at 5 mcg/kg/min. Client weight: 50 kg. Calculate mL/hr. 4. The healthcare provider prescribed 250 mL D5W 0.45 NS with 200 mg dopamine at 4 mcg/kg/min. Client weight: 70 kg. Calculate mL/hr. 5. The healthcare provider prescribed 250 mL D5W 0.45 NS with 200 mg dopamine at 3 mcg/kg/min. Client weight: 80 kg. Calculate mL/hr. 6. The healthcare provider prescribed 250 mL D5W 0.45 NS with 200 mg dopamine at 2 mcg/kg/min. Client weight: 180 lb. Calculate mL/hr. 7. The healthcare provider prescribed dobutamine hydrochloride drip at 5 mcg/kg/min. Weight is 120 lbs. On hand is 250 mg of dobutamine in 250 mL of D5W. Calculate mL/hr. 8. The healthcare provider prescribed 250 mL D5W 0.45% NS with 200 mg dopamine at 1 mcg/kg/min. Client weight: 180 lbs. Calculate mL/hr. 9. The healthcare provider prescribed 250 mL D5W 0.45% NS with 250 mg dopamine at 2 mcg/kg/min. Client weight: 160 lbs. Calculate mL/hr. 10. The healthcare provider prescribed 2 mcg/kg/min of dopamine IV infusion. On hand is 200 mg dopamine in 500 mL D5W IV solution. Your patient weighs 44 lbs. How many mL's will you give per hour? 11. The healthcare provider prescribed norepinephrine 4 mg in 100 mL D5W at 1 mcg/kg/min IV x 20 min, then call. Patient weight: 43 kg. Calculate mL/hr. 12. The healthcare provider prescribed 3 mcg/kg/min dopamine IV infusion. On hand 200 mg dopamine in 250 mL D5W. Patient weighs 45 kg. How many mL/hr should the pump be set? 13. The healthcare provider prescribed 4 mcg/kg/min dopamine IV infusion. On hand 400 mg dopamine in 250 mL D5W. Patient weighs 72 kg. Calculate mL/hr. 14. The healthcare provider prescribed 2 mcg/kg/min dopamine IV infusion. On hand 800 mg dopamine in 500 mL D5W. Patient weighs 121 lbs. How many mL/hr will the pump be set? 15. The healthcare provider prescribed 3 mcg/kg/min dopamine IV infusion. On hand 400 mg dopamine in 500 mL D5W. Patient weighs 143 lbs. Calculate mL/hr. 85. 86. CALCULATING mL/hr 1. A 254 lb. patient, has an prescription for continuous IV aminophylline at 0.6 mg/kg/hr. The IV bag reads 800 mg aminophylline in 500 mL of D5W. Set the IV pump in mL/hr.? 2. The healthcare provider prescribed pantoprazole 200 mg IV in 100 mL D5W to run over 20 minutes every 6 hours. Using an IV infusion pump, what rate would the nurse set the pump for in mL/hr? 3. The patient is to receive 500 mL D5W with 2 g of lidocaine to infuse 1 mg/min. When setting up your infusion, at what rate (mL/hr) will the nurse set the pump? 4. The patient is to receive methyldopa 125 mg IV in 100 mL D5W to run over 30 minutes every 6 hours. What rate (mL/hr) will the nurse set the infusion pump? 5. The healthcare provider prescribed tobramycin 100 mg IV in 50 mL D5W to run over 20 minutes every 8 hours. When setting up the infusion, what rate (mL/hr) will the nurse set the pump? 6. The patient is to receive ampicillin 250 mg IV in 100 mL D5W to run over 30 minutes every 4 hours. What rate (mL/hr) will the nurse set the infusion pump? 7. The patient is to receive chloromycetin 525 mg IV in 50 mL D5W to run over 15 minutes every 8 hours. At what rate (mL/hr) will the nurse set the infusion pump? 8. The patient is to receive clindamycin 300 mg IV in 50 mL D5W to run over 20 minutes every 6 hours. To run on an infusion, what rate (mL/hr) will the nurse set the pump? 9. The healthcare provider prescribed methyldopa 250 mg IV in 100 mL D5W BID 1000 & 2200. Give over 45 minutes. Hold for systolic B/P under 160 mmHg. B/P 165 mmHg. What rate (mL/hr) will the nurse set the infusion pump? 10. The healthcare provider prescribed 1 Liter of D10W to run over 6 hours. Calculate: infusion rate (mL/hr) for your infusion pump setting. 11. The healthcare provider prescribed lidocaine to infuse at 4 mg/min. On hand Lidocaine 2 grams in 500 mL D5W. At what infusion rate (mL/hr) will the nurse set the infusion pump? 12. The healthcare provider prescribed cefazolin 2 grams IV in 200 mL D5W to run over 90 min every 8 hours. At what rate (mL/hr) will the nurse set the infusion pump? 13. The healthcare provider prescribed 750 units of heparin to infuse per hour. On hand is 1000 mL D5W with 10,000 units of Heparin. How many mL/hr will the patient receive? 14. The healthcare provider prescribed metronidazole 500 mg/100 mL to infuse over 90 minutes per infusion pump. Calculate rate of infusion for mL/hr. 15. The healthcare provider prescribed clindamycin 900 mg in 100 mL D5W to infuse over 40 min per infusion pump. Calculate the rate in mL/hr 16. The patient has developed an allergic type rash while receiving metronidazole. The healthcare provider prescribed to discontinue the metronidazole 500 mg/100 mL now. When you DC the metronidazole there are 60 mLs remaining in the bag. How many mg of metronidazole has the patient received? 17. The patient's PTT is lower today. The healthcare provider prescribed to change the continuous IV Heparin order from 1400 units per hour to 1600 units per hour. There are 20,000 units Heparin in 500 mL of D5W. How many mL/hr will you increase the patient's IV? 18. The patient is receiving 1000 units Heparin per hour IV for thrombophlebitis. On hand, 25,000 units Heparin in 500 mL NS. How many mL/hr should the IV pump be set at? 19. The patient was admitted with a severe asthma attack. He has been intubated. His IV aminophylline is running at 20 mL/hr. An average maintenance dose is 0.2 - 0.5 mg/kg/hr. He weighs 220 lbs. The bag reads 800 mg in 500 mL of D5W. How many mg/kg/hr is he receiving? Is this the average maintenance dose? 87. 88. CALCULATING INFUSION TIME 1. At 1400. 500 mL of D10W remains to infuse at 200 mL/hr. What in military time will the infusion be finished? 2. At 0100. 750 mL of D10W remains to infuse at 96 mL/hr. When in military time will the infusion be infused? 3. At 1400, 600 mL of D10W remains to infuse at 200 mL/hr. When in military time will the infusion be infused? 4. At 2200, 500 mL of D10W remains to infuse at 150 mL/hr. When in military time will the infusion be infused? 5. At 1100, 640 mL Plasmalyte 56 is infusing at 80 mL/hr. When in military time will the infusion be infused? 6. At 0900, 560 mL Plasmalyte 56 is infusing at 150 mL/hr. When in military time will the infusion be finished? 7. The healthcare provider prescribed 1000 mL of D5 1/2 NS with 20 mEq KCL to run at 120 mL/hr. Calculate the number of hours and minutes the infusion requires. 8. At 1400, 75 mL of whole blood remains to infuse at 90 mL/hr. When in military time will the blood be finished? 9. At 0000, 450 mL tube feeding remains to infuse per feeding tube at 90 mL/hr via an infusion pump. When in military time will the feeding be infused? 10. At 0900. 520 mL Plasmalyte 56 is infusing at 100mL/hr. When in military time will the infusion be finished? 11. At 1500, 300 mL tube feeding remains to infuse per feeding tube at 60 mL/hr via an infusion pump. When in military time will the feeding be infused? 12. The healthcare provider prescribed 1000 mL of D5 1/2 NS with 20 mEq KCl to run at 105 mL/hr. Calculate: the hours and minutes the infusion will be finished. 13. The healthcare provider prescribed 1000 mL of D5 1/2 NS to infuse at 180 mL/hr. Calculate the number of hours and minutes the infusion will be finished. 14. The patient is to receive 450 mL of tube feeding at 70 mL/hr. The infusion started at 4 p.m. When in military time will the feeding be infused? 15. At 0100, 750 mL of D10W remains to infuse at 150 mL/hr. When in military time will the infusion be finished? 16. The patient is to receive 400 mL of tube feeding at 70 mL/hr. The infusion started at 1400. When in military time will the feeding be infused? 17. The healthcare provider prescribed 2,000 mL of D5 1/2 NS at a rate of 120 mL/hr, how many hours and minutes will it take to be finished? 18. The healthcare provider prescribed 1500 mL IV of D5 1/3 NS to infuse at a rate of 124 mL/hr. When in military time will this infusion be completed if it is started at 1400? 19. The healthcare provider prescribed 1000 mL D5 1/2 NS to infuse at 180 mL/hr. Calculate the number of hours and minutes the infusion will require. 20. At 0100, 750 mL of D10W remains to infuse at 96 mL/hr. When in military time will the infusion be complete? 21. At 1400, 400 mL of D10W remains to infuse at 240 mL/hr. When in military time will the infusion be complete? 22. At 2200. 500 mL of D10W remains to infuse at 160 mL/hr. When in military time will the infusion be complete? 23. At 0900, 600 mL Plasmalyte 56 is infusing at 100 mL/hr. When in military time will the infusion be complete? 24. At 1500, 220 mL Plasmalyte 56 is infusing at 96 mL/hr. When in military time will the infusion be complete? 25. The healthcare provider prescribed 1000 mL D5 1/2 NS to infuse at 120 mL/hr. Calculate: number of hours and minutes the infusion will require. 26. The healthcare provider prescribed 1000 mL D5 1/2 NS to infuse at 160 mL/hr. Calculate: number of hours and minutes the infusion will require. 27. The healthcare provider prescribed 1000 mL D5 1/2 NS with 20 mEq KCL to infuse at 100 mL/hr. Calculate the time in hours the infusion requires. 28. At 1200, 100 mL of whole blood remains to infuse at 45 mL/hr. What time will the blood be finished? 89. 90. DOSAGE ADJUSTMENTS 1. The healthcare provider prescribed 500 mL D5W with 25,000 units heparin to infuse at 800 units/hr. A new prescription states: increase heparin infusion by 200 units/hr. What will be the new rate in mL/hr? 2. The healthcare provider prescribed 250 mL D5W with 10,000 units heparin infusing at 24 mL/hr. A new prescription states: decrease heparin infusion by 200 units/hr. What will be the new rate in mL/hr? 3. The healthcare provider prescribed 250 mL NS with 100 units Regular Insulin is infusing at 10 units/hr. There is a standing prescription to decrease insulin by 2 units/hr if blood sugar drops below 100. Patient's last BS was 94. How many mL/hr will the infusion pump be programmed to infuse? 4. The healthcare provider prescribed 100 units of regular Insulin in 200 mL NS is infusing at 10 mL/hr. There is a standing prescription to increase the dose by 2 units/hr if the BS is >250 and to decrease the dose by 2 units/hr if the BS < 70. The BS is 62. Calculate the new rate in mL/hr. 5. The healthcare provider prescribed 100 units of regular Insulin in 200 mL NS is infusing at 5 units/hr. There is a standing prescription to increase the dose by 2 units/hr if the BS is >250 and to decrease the dose by 2 units/hr if the BS < 70. The BS is 62. Calculate the new rate in mL/hr. 6. The healthcare provider prescribed 100 units of regular Insulin in 200 mL NS is infusing at 7 units/hr. There is a standing prescription to increase the dose by 2 units/hr if the BS is >250 and to decrease the dose by 2 units/hr if the BS < 70. The BS is 262. Calculate the new rate in mL/hr. 7. The healthcare provider prescribed 100 units of regular Insulin in 200 mL NS is infusing at 15 mL/hr. There is a standing prescription to increase the dose by 2 units/hr if the BS is >250 and to decrease the dose by 2 units/hr if the BS < 70. The BS is 362. Calculate the new rate in mL/hr. 8. The healthcare provider prescribed 25,000 units heparin in 500 mL D5W is infusing at 1600 units/hr. There is a standing prescription to increase the dose by 200 units/hr if the patient’s PTT < 45 and to decrease the dose by 200 units/hr if the PTT is > 80. The PTT is 43. Calculate the new rate in mL/hr. 9. The healthcare provider prescribed 25,000 units heparin in 500 mL D5W is infusing at 24 mL/hr. There is a standing prescription to increase the dose by 200 units/hr if the patient’s PTT < 45 and to decrease the dose by 200 units/hr if the PTT is >80. The PTT is 83. Calculate the new rate in mL/hr. 10. A. 250 mL NS with 20,000 units heparin is infusing at 1000 units/hr. There is a standing order: If PTT < 50 increase heparin by 200 units/hr. If PTT > 80 decrease heparin by 200 units/hr. PTT is 86. How many mL/hr will infuse? o B. 12 hours later the PTT is 82. How many mL/hr will be infused? o C. The next am the heparin is infusing at 1200 units/hr and the PTT is 48. How many mL/hr will be infused? Answers to Drug Dosage/IV Calculation Practice 1. 1 mL 2. 1 tab 3. ½ tab 4. 4 tab 5. 2 mL 6. 1 tab 7. 1 cap 8. 1 tab 9. ½ tab 10. 2 mL 11. 2 mL 12. 1 tab 13. 1 tab 14. 1 tab 15. 3 tab 16. 1 cap 17. 3 mL 18. 2 tab 19. 2.5 mL 20. 4 mL 21. 2.7 mL 22. 10 mL 23. 4 mL 24. 5 mL 25. 1.7 mL 26. 250 mcg in each mL 27. 10 mL 28. 2.5 mL 29. 1 tab 30. 2 mL 31. 2.5 mL 32. 20 mL 33. 1 mL 34. 0.5 mL 35. 8 mL 36. 0.7 mL 37. 0.5 mL 38. 2.4 mL 39. 0.9 mL 40. 10 mL 41. 4 mEq 42. 0.45 mL 43. 1 mL 44. 0.8 mL 45. 10 mL 46. 0.6 mL 47. 500 mcg 48. 1.5 mL 49. 1.7 mL 50. 1.8 mL 51. 4.5 mL 52. 4.8 mL 53. 2.4 mL 54. 0.5 mL 55. 0.7 mL 56. 0.65 mL 57. 0.8 mL 58. 1 mEq/hr 59. 2.7 mL 60. 15.5 mL 61. 10 mL 62. 0.6 mL 63. 1 mL 64. 0.5 mL 65. 1 mL 66. 8 mL 67. 2.6 mL 68. 3 mL 69. 10 mL 70. 1.2 mL 71. 1.7 mL 72. 0.15 mL 73. 0.93 mL 74. 0.75 mL 75. 0.7 mL 76. 0.5 mL 77. 0.8 mL 78. 3.3 mL 79. 36 mL 80. 1 mL 81. 1.3 mL 82. 1.8 mL Calculating mcg/kg/min 1. 33.6 mL/hr 2. 24.5 mL/hr 3. 18.8 mL/hr 4. 21 mL/hr 5. 18 mL/hr 6. 12.3 mL/hr 7. 16.4 mL/hr 8. 6.1 mL/hr 9. 8.7 mL/hr 10. 6 mL/hr 11. 18.6 mL/hr 12. 10.1 mL/hr 13. 10.8 mL/hr 14. 4.1 mL/hr 15. 14.6 mL/hr Calculating mL/hr 1. 43.3 mL/hr 2. 300 mL/hr 3. 15 mL/hr 4. 200 mL/hr 5. 150 mL/hr 6. 200 mL/hr 7. 200 mL/hr 8. 150 mL/hr 9. 133.3 mL/hr 10. 166.7 mL/hr 11. 60 mL/hr 12. 133.3 mL/hr 13. 75 mL/hr 14. 66.7 mL/hr 15. 150 mL/hr 16. 200 mg pt received 17. (5mL/hr) 35 mL/hr to 40 mL/hr 18. 20 mL/hr 19. Yes, 0.32 mg/kg/hr Calculate Infusion Time 1. 1630 is 4:30 pm 2. 0849 is 8:49 am 3. 1700 is 5 pm 4. 0120 is 1:20 am 5. 1900 is 7 pm 6. 1244 is 12:44 pm 7. 8 hrs. 20 min. 8. 1450 is 2:50 pm 9. 0500 is 5 am 10. 1412 is 2:12 pm 11. 2000 is 8 pm 12. 9 hrs 31 min. 13. 5 hrs 33 min. 14. 2226 is 10:26 pm 15. 0600 is 6 am 16. 1943 is 7:43 pm 17. 16 hr 40 min 18. 0206 is 2:06 am 19. 5 hr 33 min. 20. 0849 is 8:49 am 21. 1540 is 3:40 pm 22. 0108 is 1:08 am 23. 1500 is 3 pm 24. 1718 is 5:18 pm 25. 8 hrs. 20 min. 26. 6 hrs. 15 min. 27. 10 hrs. 28. 1413 is 2:13 p.m. Dosage Adjustments 1. 20 mL/hr 2. 19 mL/hr 3. 20 mL/hr 4. 6 mL/hr 5. 6 mL/hr 6. 18 mL/hr 7. 19 mL/hr 8. 36 mL/hr 9. 20 mL/hr 10. A. 10 mL/hr, B. 7.5mL/hr, C. 17.5mL/hr