N601 Saunders Fundamentals Medications IV Calculation

1) The nurse is completing a time tape for a 1000-mL intravenous (IV) bag that is scheduled to infuse over 8 hours. The nurse has just placed the 1100 marking at the 500-mL level. The nurse would place the mark for 1200 at which numerical level (mL) on the time tape? Fill in the blank. mL Correct answer: 375 mL Rationale: If the IV is scheduled to run over 8 hours, the hourly rate is 125 mL/hour. Using 500 mL as the reference point, the next hourly marking would be at 375 mL, which is 125 mL less than 500. Cognitive Ability: Applying Client Needs: Physiological Integrity Integrated Process: Nursing Process: Implementation Content Area: Fundamentals of Care: Medication/IV Calculations Strategy(ies): Subject Priority Concepts: Clinical Judgment, Safety 2) A health care provider's prescription reads 1000 mL of normal saline (NS) to infuse over 12 hours. The drop factor is 15 drops (gtt)/1 mL. The nurse prepares to set the flow rate at how many drops per minute? Fill in the blank. Record your answer to the nearest whole number. drops per minute Correct answer: 21 drops per minute Rationale: Use the intravenous (IV) flow rate formula. Formula: Total volume × Drop factor –––––––––––––––––––––––––– = gtt/min Time in minutes 1000 mL × 15 gtt 15,000 –––––––––––––––– = –––––– = 20.8 gtt/min 720 minutes 720 = 21 gtt/min Cognitive Ability: Applying Client Needs: Physiological Integrity Integrated Process: Nursing Process: Implementation Content Area: Fundamentals of Care: Medication/IV Calculations Strategy(ies): Subject Priority Concepts: Clinical Judgment, Safety 3) A health care provider's prescription reads to administer an intravenous (IV) dose of 400,000 units of penicillin G benzathine. The label on the 10-mL ampule sent from the pharmacy reads penicillin G benzathine, 300,000 units/mL. The nurse prepares how much medication to administer the correct dose? Fill in the blank. Record your answer using 1 decimal place. mL Correct answer: 1.3 mL Rationale: Use the medication dose formula. Formula: Desired × mL –––––––––––– = mL/dose Available 400,000 units × 1 mL –––––––––––––––––––– = mL/dose 300,000 units 400,000 units ––––––––––––– = 1.33 = 1.3 mL 300,000 units Cognitive Ability: Applying Client Needs: Physiological Integrity Integrated Process: Nursing Process: Implementation Content Area: Fundamentals of Care: Medication/IV Calculations Strategy(ies): Subject Priority Concepts: Clinical Judgment, Safety 4) A health care provider's prescription reads potassium chloride 30 mEq to be added to 1000 mL normal saline (NS) and to be administered over a 10-hour period. The label on the medication bottle reads 40 mEq/20 mL. The nurse prepares how many milliliters of potassium chloride to administer the correct dose of medication? Fill in the blank. mL Correct answer: 15 mL Rationale: In most facilities, potassium chloride is premixed in the intravenous solution and the nurse will need to verify the correct dose before administration. In some cases the nurse will need to add the potassium chloride and will use the medication calculation formula to determine the mL to be added.