NUR 246 Practice Problems for Math Dosage Test Solution Guide 2024 with an Answer Sheet

NUR 246 Practice Problems for Math Dosage Test Solution Guide 2024 with an Answer Sheet NUR 246 Practice Problems for Math Dosage Test Solution Guide 2024 with an Answer Sheet The math dosage test will come from dosage problems #1 – 5. They are not the same questions, but similar format. If you know how to do the dosage problems provided to you, then you can do the math dosage test. Important things to remember: o When working with a dosage that is less than 1 ml, carry your work to the thousandths and round off to the hundredths. When working with a dosage that is greater than 1 ml, carry your work to the hundredths and round off to the tenth. o Make sure you convert pounds and ounces to kilograms…typically pediatric dosages are based on kg. o Important conversions to remember: 16 ounces (oz.) = 1 pound (lb.) 12 inches (in.) = 1 foot (ft.) 1000 micrograms (mcg) = 1 milligrams (mg) 1 kilograms (kg) = 2.2 pounds (lb.) 60 gtt/ml (drop factor – always use this is pediatrics) Pediatric Dosage Problems #1 1. Order: Lanoxin 0.07 mg po Available: Bottle labeled 0.05 mg/ml Give: 2. Order: Morphine 4.8 mg IV Available: Vial labeled 2 mg/ml Give: 3. Order: Atropine 0.35 mg IM Available: Ampule containing 0.4 mg/ml Give: 4. Order: Gentamycin 60 mg Available: Vial labeled 40 mg/ml Give: 5. Order: Aqueous Penicillin G 750,000 u IV Available: Vial labeled 100,000 u/ml Give: 6. Order: Tylenol 325 mg po Available: Bottle labeled 100 mg/ml Give: 7. Order: Phenobarbital 50 mg po Available: Elixir labeled 20 mg/5 ml Give: 8. Order: Amoxicillin 200 mg po Available: Ampule labeled 125 mg/5 ml Give: 9. Order: Dilantin 64 mg IV Available: Vial labeled 50 mg/ml Give: 10. Order: Chloral hydrate 500 mg rectally Available: Suppositories labeled 324 mg per suppository Give: Pediatric Dosage Problems #2 1. Order: Gentamycin 75 mg IV every 8 hr Recommended: 2 – 2.5 mg/kg/dose Weight: 92 lb. Range: Is ordered dose too high, too low, or okay? 2. Order: Carbenicillin 120 mg IV every 6 hr Recommended: 30 – 50 mg/kg/24 hr Weight: 9 lb. 3 oz. Range: Is ordered dose too high, too low, or okay? 3. Order: Nafcillin 350 mg IV every 6 hr Recommended: 50 – 100 mg/kg/24 hr Weight: 45 lb. Range: Is ordered dose too high, too low, or okay? 4. Order: Solu-medrol 60 mg IV every 6 hr Recommended: 0.5 – 1.7 mg/kg/24 hr Weight: 80 lb. Range: Is ordered dose too high, too low, or okay? 5. Order: Dilantin 50 mg every 8 hr Recommended: 8 – 10 mg/kg/24 hr Weight: 20 lb. 10 ounces Range: Is ordered dose too high, too low, or okay? 6. Order: Benadryl 50 mg po every 8 hr Recommended: 5 mg/kg/24 hr Weight: 75 lb. Range: Is ordered dose too high, too low, or okay? 7. Order: Aqueous Penicillin G 600,000 u IV every 6 hr Recommended: 100,000 – 250,000 u/kg/24 hr Weight: 50 lb. Range: Is ordered dose too high, too low, or okay? 8. Order: Ampicillin 450 mg IV every 6 hr Recommended: 100 – 200 mg/kg/24 hr Weight: 30 lb. 9 2/5 ounces Range: Is ordered dose too high, too low, or okay? 9. Order: Ceftazidime 500 mg IV every 8 hr Recommended: 30 – 50 mg/kg every 8 hr Weight: 30 kg Range: Is ordered dose too high, too low, or okay? 10. Order: Phenobarbital 25 mg po every 12 hr Recommended: 5 – 6 mg/kg/24 hr Weight: 18 kg Range: Is ordered dose too high, too low, or okay? Pediatric Dosage Problems #3 (IV Practice Problems – use 60 gtt/ml drop factor) 1. Bobby is to receive 1500 ml D5 ½ NS over a 24 hour period. How many ml/hr should you administer? 2. Shawn is to receive 350 ml D5 ¼ NS with 2 mEq KHPO4/100 ml of fluid over 24 hr period. How many ml/hr will you administer? 3. Joe is receiving 2800 ml D5 ½ NS with 20 mEq KCL/L/day. How many ml/hr will you administer? 4. Eric is ordered to receive 650 ml of D5 ¼ NS with 60 mEq KCL/L and Heparin ½ u/ml to run for 12 hours. How many ml/hr will you run the fluids? 5. Barbara is ordered to receive 1600 ml D5 ½ NS with 2 mEq KCL per 100 ml IV fluid and heparin ½ u/ml over 24 hours. At what rate will you program the IV pump to infuse the fluids (ml/hr)? 6. Jeb is to receive 35 ml IV fluid over a 30 min period. How many gtt/min will you administer in order to carry out this order? How many ml/hr will you program the IV pump? 7. Joan’s Gentamicin is to be given in 50 ml of IV fluid and administered over a 40 minute period. How many ml/hr will you need to give? 8. Margaret is admitted to the pediatric unit with a diagnosis of dehydration. Her physician orders her IV of a 500 ml bag of NS to infuse over four hours. How fast will you program her IV pump to infuse the ordered amount within the ordered time frame (ml/hr)? 9. Lynn is admitted to the pediatric unit of your hospital with a diagnosis of an infection. Her physician orders a liter of D5 ½ NS to infuse over 36 hours. How fast will you program her IV pump to infuse the solution at the ordered rate (ml/hr)? 10. Lois’ physician orders Vancomycin for her infection. You put the Vancomycin in 100 ml of IV fluid and infuse over 75 minutes. How fast will you program her IV pump to infuse the medication (ml/hr)? Pediatric Dosage Problems #4 1. You are to give 120 mg Ampicillin. The ampicillin on hand is labeled 250 mg per 5 ml. How much will you administer? 2. Your Digoxin is labeled 0.05mg/ml. You are to give 0.25 mg. How much will you administer? 3. You need to give 1 mg Morphine. Your Morphine on hand is labeled 15 mg/1 ml. How much will you administer? 4. The usual dose of Keflex is 25 – 100 mg/kg/24 hr. The correct range of dosage for a 19 pound 4 ounce baby would be mg/day. 5. Alex is to receive Dicloxacillin 160 mg IV every 6 hr. The usual dose is 25 – 50 mg/kg/day. Alex weighs 35 pounds. Is his ordered dose within the recommended dosage range? If not, is it too much or too little? 6. Aqueous Penicillin G 150,000 u every 6 hr is ordered for 32 pound Roy for his Group B Strep meningitis. Your Pediatric Drug book recommends 250,000 – 450,000 u/kg/24 hr for a child over the age of one. Is Roy’s ordered dosage within the recommended range? If not, is it too much or too little? 7. Order: Dilantin 150 mg every 8 hr po Recommended: 7.5 - 9 mg/kg/24 hr Weight: 54 pounds Range: Is ordered dose too high, too small, or okay? 8. Order: 1450 ml D5 ¼ NS w/ 25 mEq KCL/L to run for 24 hr. How fast will you run fluids (ml/hr)? 9. Order: 1350 ml D5 ¼ NS with 20 mEq KCL/L and ½ u heparin/ml to infuse over 12 hours. How fast will you run the fluids (ml/hr)? 10. Order: 1850 ml D5 ¼ NS with 3 mEq KCL/100 ml and ¼ u heparin/ml to run 18 hours. How fast will you run the fluids (ml/hr)? Pediatric Practice Problems #5 1. A 500 mg Nafcillin vial label reads: “When reconstituted with 1.7 ml sterile water, the contents of each vial provides respectively Nafcillin Sodium solution equivalent per 1 ml to 250 mg Nafcillin, buffered with 10 mg Sodium Citrate”. a. How much diluent will you add to the 500 mg vial? b. How much solution will you withdraw in order to give the ordered dose of 325 mg? 2. Keflin, 1 gram vial label reads: “Each gm of cephalothin (Keflin) should be diluted with 4 ml sterile water for injection. The reconstituted material will provide two 500 mg doses of 2.2 ml each.” a. How much diluent will you add to the 1 gram vial? b. How much solution will you withdraw in order to give the ordered dose of 130 mg? 3. The label on a 1 gram vial of ampicillin reads: “Add 3.4 ml diluent. Resultant solution will contain 250 mg/ml.” a. How much diluent will you add to the vial? b. How much solution will you withdraw in order to give the ordered dose of 550 mg? c. How much solution will you withdraw in order to give the ordered dose of 950 mg? 4. The label of a 1 gram vial of Cefazolin reads: “Add 2.5 ml sterile water for injection. Shake well. Provides an appropriate volume of 3 ml (330 mg/ml).” a. How much diluent will you add to the vial? b. How much solution will you withdraw in order to give the ordered dose of 275 mg? c. How much solution will you withdraw in order to give the ordered dose of 600 mg? 5. The label on a 1 gram vial of Ticar (ticarcillin disodium) reads: “Add 2 ml sterile water for injection and use promptly. Each 2.6 ml of solution will then contain 1 gram of ticarcillin.” a. How much diluent will you add to the vial? b. How much solution will you withdraw in order to give the ordered dose of 280 mg? c. How much solution will you withdraw in order to give the ordered dose of 600 mg? 6. The label on a 1 gram vial of Tazidime (ceftazidime) reads: “Add 3 ml of an approved diluent. Shake well to dissolve. Provides an approximate volume of 3.6 ml (280 mg/ml).” a. How much diluent will you add to the vial? b. How much solution will you withdraw in order to give the ordered dose of 1250 mg? c. How much solution will you withdraw in order to give the ordered dose of 640 mg? 7. The label on a 3.1 gram vial of Timentin (3 gm ticarcillin and 100 mg clavulanate potassium) reads: Directions for use: Reconstitute with approximately 13 ml sterile water for injection. Each ml of solution contains approximately 200 mg ticarcillin and 6.7 mg clavulanic acid. (Use ticarcillin dose to calculate dose for withdrawal). a. How much diluent will you add to the vial? b. How much solution will you withdraw in order to give the ordered dose of 1750 mg of ticarcillin? c. How much solution will you withdraw in order to give the ordered dose of 2600 mg of ticarcillin? 8. The label on the 1,000,000 unit vial of Penicillin G Potassium reads: “Vial provides 1,000,000 units of Penicillin G Potassium with approximately 27 mg citrate buffer composed of sodium citrate and not more than 0.94 mg citric acid.” Preparation of Solution Vial contains 1,000,000 units Add diluent For concentration of 9.6 ml 100,000 u/ml 4.6 ml 200,000 u/ml 3.6 ml 250,000 u/ml a. How much diluent will you add? b. How much solution will you withdraw in order to give the ordered dose of 455,000 u? c. How much solution will you withdraw in order to give the ordered dose of 360,000 u? 9. The following information appears on the label of Geopen (2 gm vial): “Reconstitute with at least 4 ml of sterile water for injection. In order to facilitate reconstitution, add up to 7.2 ml of water for injection may be used. (See below)” Amount of diluent to be added Volume to w/draw for 1 gram dose 4.0 ml 2.5 ml 5.0 ml 3.0 ml 7.2 ml 4.0 ml a. How much diluent will you add? b. How much solution will you withdraw in order to give the ordered dose of 1450 mg? c. How much solution will you withdraw in order to give the ordered dose of 1875 mg?