ATI: Dosage Calculation Medical Administration Q & A’s

Dosage Calculation: Medication Administration 1. A nurse is preparing to administer dextrose 5% in water 2L to infuse over 6hr. The nurse should administer how many mL? a. 1L=1000mL b. XmL=1000mL/1L x 2L c. X=2000mL 2. A nurse is preparing a medication & calculates the dosages as 0.547mL. How many mL should the nurse administer? a. 0.55mL b. When rounding doses less than 1, round to the 100th. If the # in the 1000th’s place is equal to or greater than 5, round up by adding 1 to the # to the left, the 100th’s place. 0.547 rounds to 0.55mL. 3. A nurse is preparing to administer Benadryl 25mg PO every 12hr. Available is syrup 12.5mg/5mL. How many tsp should the nurse administer per dose? Round to the nearest whole #. a. Step 1: tsp is the unit of measurement b. Step 2: what quantity of the dose is available? 5mL c. Step 3: What is the dose available? 12.5mg d. Step 4: What is the dose needed? 25mg e. Step 5: Convert units. 1tsp/5mL f. Step 6: Set up an equation i. X= quantity/have x conversion (have)/conversion(desired) x desired ii. X tsp= 5mL/12.5mg x 1tsp/5mL x 25mg iii. X=2 iv. Round if necessary 4. A nurse is preparing to give Lanoxin 0.125mg PO at 9:00am. What time should the nurse give the med? a. 0900 5. A nurse is about to give Lasix 40mg PO in 0.5oz OJ. How many mL of OJ should the nurse give? a. Step 1: Identify equivalent: 1oz= 30mL b. Set up an equation & solve for X. i. X mL= 30mL/1oz. x 0.5oz ii. X=15 6. A nurse is about to give Adrenalin Chloride 0.5mg subcutaneous stat. How many mcg should the nurse give? a. Equivalent: 1mg= 1000mcg b. Set up equation & solve for X i. X mcg= 1000mcg/1mg x 0.5mg ii. X= 500mcg 7. A nurse is about to give 0.9% NaCl 25000mL to infuse over 12hr. The nurse should administer how many L? a. Equivalent: 1000mL= 1L b. X L= 1L/1000mL x 2500mL c. X= 2.5L 8. A nurse is about to give regular insulin (Humulin R) 15 units & isophane insulin (Humulin N) 40 units subcutaneous 6.30am. What time should the nurse give the med? a. 0630 9. A nurse about to give a med & calculates the dosage as 6.25mL. How many mL should the nurse give (round to the nearest 10th) a. 6.3mL This study source was downloaded by from CourseH on :10:03 GMT -05:00 This study resource was shared via CourseH 10. A nurse is about to give a med & calculates the dosage as 0.893mL. Rounding to the nearest 100th , the nurse should give how many mL? a. When rounding doses less than 1, round to the 100th. If the # in the 1000th’s place is less than 5, drop the # & leave the # in the 100th’s place as is. b. 0.893 rounds to 0.89mL 11. A nurse is about to give Novo-Ryythro Estolate 500mg PO every 8hr. Available is 250mg/mL. How many mL should the nurse give per dose? Round to the nearest whole #. a. Step 1: what’s the unit of measurement to calculate? mL b. Step 2: what quantity of the dose is available? 1mL c. What’s the dose available? 250mg d. What’s the dose needed? 500mg e. Should the nurse convert the units? No f. Set up an equation i. X= 1mL/250mg x 500mg ii. X=2mL iii. Round if necessary 12. A nurse is about to give Kaon 25mEq in 6oz water. How many mL of water should the nurse give? Round to the nearest whole #. a. Identify equivalent. i. 1oz= 30mL b. Set up an equation & solve for x i. X mL= 30mL/1oz x 6oz ii. X=180mL iii. Round if necessary 13. A nurse is about to give Lanoxin 0.25mg PO daily. Available is 500mcg tablets. How many tablets should the nurse give? Round to the nearest tenth. a. What unit should you calculate? i. Tablet b. What quantity of dose is available?