Pediatric Medication Calculations, Calculation Quiz I, IV dosage calculation practice test, HESI Dosage Calculations Practice Exam, Intravenous (IV) calculations, Intravenous Calculations, medication calculations review sets (A+)

Pediatric Medication Calculations, Calculation Quiz I, IV dosage calculation practice test, HESI Dosage Calculations Practice Exam, Intravenous (IV) calculations, Intravenous Calculations, medication calculations review sets (A+) convert :20 pounds 5 ounces to kilogram - Correct Answer-1st: need to convert 5 ounces to a fraction of a pound 5 divided by 16=0.31 2nd: 20.31 pounds divided by 2.2=9.23 kg Note: medication would be calculated based on 9.23 kilograms DO NOT ROUND TO 9.2 Pediatric specific Calculations - Correct Answer-Mg / Kg dosing based on Weight (Kg) Safe dosing ranges IV pediatric infusion rates IV administration of meds via IV pump or Syringe pump. 24 hour fluid calculation child: 5 years: weight 44 lbs order: famotidine (pepcid) 5 mg IV bid Drug guide: 0.25 mg/Kg q 12 hr IV up to 40mg/day. - Correct Answer-Convert lb t kg: 44 kg= 20 kg Determine safe dose: 20 kg* 0.25 mg= 5 mg 5 mg is safe meets mg/kg rule and does not Exceed 40 mg/day 5 mg bid= total of 10 mg/day calculate dose pepcid is provided as 10 mg/ml - Correct Answer-10 mg/1mL= 5 mg/ X mL 5/10x = 0.5 mL of Pepcid The Physician order will never say to flush The line - Correct Answer-YOU MUST DO THIS WITH EACH IV MEDICATION A medication order: 1 L D-5-W IV q 8 h. If the infusion pump (or administration set) delivers 10 drops/ml, calculate the infusion rate in drops/min. - Correct Answer-20.8 drops/min How many fluid ounces (,) Robitussin Cough Syrup are there in 2.5 L? - Correct Answer-84.5 fl. oz. An ophthalmic solution contains 1 mg dexamethasone phosphate/mL. How many mg dexamethasone phosphate are provided by 2 drops of the solution if the eye dropper delivers 20 drops/mL? - Correct Answer-0.1 mg What does it mean when a substance has a specific gravity (Sp. Gr.) of 1.25? - Correct Answer-The ratio of the density of the substance to that of pure water is 1.25 : 1. Given Info: Glycerin = 10 mL ZnO = 25 g Ointment base qs 100 g S. of glycerin is 1.25 How many g ointment base need to be weighed? - Correct Answer-62.5 g Cocoa Butter (Theobroma Oil) suppository base has a sp. Gr. = 0.86. If 48 mL of melted Cocoa Butter is needed to make a batch of suppositories, how many grams of unmelted cocoa butter need to be weighed? - Correct Answer-41.28 g How many 0. g doses can be prepared from 0.130 g of drug? - Correct Answer2000 doses A RPh fills 3 compounded Rxs using the following quantities of hydromorphone HCl: 1/8 oz., ¼ oz, 1-1/2 oz. How many ounces of drug remain in the original container of 3 oz of drug from which she withdrew the 3 amounts of drug? - Correct Answer-9/8 oz. or 1.125 oz. A RPh had 5 g codeine phosphate which she used in filling 3 Rxs for capsules as follows: viii caps each containing 0.0325 g; xii caps each containing 0.015 g; xviii caps each containing 0.008 g. How much codeine phosphate remained in the RPh's inventory? - Correct Answer-4.416 g 26 patients out of 2105 patients enrolled in a clinical research protocol reported a headache after 1 dose of the investigational drug. What % of patients reported this adverse event? - Correct Answer-1.24% An insulin product contains 100 u/mL. How many mL should be injected to provide 40 u? - Correct Answer-0.4 mL Lanoxin brand of digoxin pediatric elixir contains 0.05 mg dig/mL. If the Rx calls for 0.6 mL po, how many mg of digoxin is the patient receiving per dose? - Correct Answer0.03 mg An industrial formulation specifies 3.25 g diazepam to prepare a batch of 1250 tabs. How many g diazepam should be used to prepare 350 tablets? - Correct Answer-0.91 g A cough syrup contains 10 mg dextromethorphan HBr per tsp. How many mg of the drug are contained in a 4 . container? - Correct Answer-If use 5 mL, then 236.8 mg If use 4.92 mL, then 240.65 mg An IV solution is adjusted to deliver 15 mg drug per hr. How many mg of the drug is the patient receiving per minute? - Correct Answer-0.25 mg/min Filgrastim (Neupogen®), a biotech drug, is available in vials labeled 480 μg/0.8 mL. If a patient receives an injection of 0.5mL, what dose (in μg) did the patient receive? - Correct Answer-300 mcg A compounding operation calls for 50 tabs of 0.025 mg potency. The pharmacist only has 0.1 mg strength tablets in stock. How many 0.1 mg tabs must be used to provide the amount of active ingredient needed to compound this Rx? - Correct Answer-12.5 tablets An MDI contains 225 mg metaproterenol sulfate which is sufficient for 300 inhalations. What dose does the patient receive with each inhalation? - Correct Answer-0.75 mg/inhalation A pediatric vitamin contains 1500 units Vitamin A/mL. An Rx for a child specifies 2 gtts. daily. If the dropper delivers 20 drops per mL, what dose of Vitamin A is the child receiving? - Correct Answer-150 units What does the abbreviation "gtts" mean? - Correct Answer-drops A 5 g packet of KCl granules provides 20 mEq of K ion. How many g would provide 6 mEq potassium ion? - Correct Answer-1.5 g A PK study reveals that Cp values for ciprofloxacin exhibit dose proportionality. If a 250 mg single dose of ciprofloxacin results in a Cp of 1.2 μg/mL, what Cp would result from a 500 mg dose of the antibiotic? - Correct Answer-2.4 mcg/mL 0.5 mL mumps virus vaccine contains 5000u. How many units are present in each mL once 0.5 mL of the vaccine is diluted 2 mL with SWFI? - Correct Answer-2500 u/mL A measurement designated as "325 grams" actually means some amount between _____ grams and _____ grams. - Correct Answer-320 and 330 If Acetaminophen in doses greater than 4 g/day is assumed to cause liver toxicity, what is the maximum number of 500 mg tablets a patient may "safely" take per day? - Correct Answer-8 tablets/day An Albuterol inhaler contains 20 mg. How many inhalation-doses can be delivered if each contains 90 mcg. - Correct Answer-222 doses Adalimumab (a biotech drug) is available as a "prefilled syringe," containing 40 mg/0.8 mL. Calculate the concentration on a mg/mL basis. - Correct Answer-50 mg/mL Digoxin is available for parenteral pediatric use in a concentration of 0.1 mg/mL. How would you obtain a dose of 40 μg? - Correct Answer-0.4 mL An IV solution containing 123 mg drug in each 250 mL bag is to be infused at a rate of 200 mcg/min. How many mL should be administered per hr? - Correct Answer-24.4 mL/hr An estradiol transdermal system is a round patch with a diameter of 4.3 cm. Express this in mm. - Correct Answer-43 mm 1 pound (lb) is equal to how many grams? - Correct Answer-454 g 1 kg is equal to how many pounds? - Correct Answer-2.2 lbs The starting dose of chlorambucil is 150 mcg/kg. How many mg should be administered to a frail 85 yo female who weighs 154 lb? - Correct Answer-10.5 mg If a cough syrup contains 0.09 g dextromethorphan HBr per ., how many mg of this synthetic cough suppressant would the patient receive in a 1 tsp. dose? In a 1 tbsp. dose? - Correct Answer-15.2 mg 2 mg An IV bolus injection contains 125 mg/25 mL. Express this as μg/μL. - Correct Answer-5 mcg/mcL Prochlorperazine (Compazine®) injection comes as 10 mL MDVs., 5 mg/mL. How many 2 mg doses can be withdrawn from a single vial? What is the volume of each dose? - Correct Answer-25 doses Each dose is 0.4 mL. An IV solution contains 123 mg of drug in each 250 ml bag. It is infused at a rate of 200 mcg/min. How many mL would be administered in 1 hr? - Correct Answer-24.39 mL The order is for 200 mg. The label reads 250mg /5ml. You would give ____ml(s). - Correct Answer-4ml The order is for 60 ml. You would give ____tablespoon(s). - Correct Answer-4 TB The order is for 60mg. The label reads 60 mg/2 ml. You would give ___ml. - Correct Answer-2ml The order is for 1000 ml. of I.V. solution to be infused at 125 ml/hr. You would infuse the solution for ___hours. - Correct Answer-8hr The order is for 6000 ml of IV solution to run over a 24 hour period. The drop factor of the I.V tubing is 10 gtts/ml. You would infuse _____gtts/min. - Correct Answer-42gtt/min Your patient weighs 75 kg and you are ordered to infuse 250 mg dobutamine in 500 ml NS at 10 mcg/kg/min. How many MILLIGRAMS of dobutamine will infuse per hour? - Correct Answer-45mg/hr The order is 500 mg of Rocephin to be taken by a 15.4 lb infant every 8 hours. The medication label shows that 75-150 mg/kg per day is the appropriate dosage range. How much will the patient receive per day? Is this within the normal range? - Correct Answerminimum = 525mg maximum = 1050mg The doctor prescribed 500 x3= 1500mg per day; this is not within the safe range The order is Solumedrol 3mg/kg for a child weighing 20kg. Solumedrol is available as 125 mg / 2 ml. How many ml must the nurse administer? - Correct Answer-0.96ml The order : KayCiel 30 mEq PO Bid pc. Available: Kay Ciel 45 mEq/15 ml. How many ml of KayCiel should you administer? - Correct Answer-10ml The order is for 25 mg. The label reads 75mg/ml. How many ml(s) would you give? - Correct Answer-0.33ml The order is for 1.5 g The label reads 1 tablet equals 3 g. How many tablet (s) would you give? - Correct Answer-0.5 tablet The order is for 400mcg of thyroxin. The label reads 0.2 mg tablets. How many tablets would you give? - Correct Answer-2 tablets The order is Penicillin G 1.2 million units IM daily. Available: Penicillin G 9 million units/1 ml. How many ml will you give? - Correct Answer-0.13ml Convert 75 lbs into kg. - Correct Answer-34.1 kg A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the rate of 3 mcg/kg/minute. The solution strength available is dopamine 400 mg in 250 ml of D5W. The nurse should set the infusion pump to deliver how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest tenth.) - Correct Answer-11.3 First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next, calculate the dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min. Convert mcg/min to mcg/hour, 300 mcg/min x 60 min=18,000 mcg/hour. Convert mcg/hr to mg/hour, 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3 ml/hour. A client with hypertension who weighs 72.4 kg is receiving an infusion of nitroprusside (Nipride) 50 mg in D5W 250 ml at 75 ml/hour. How many mcg/kg/minute is the client receiving? (Enter numeric value only. If rounding is required, round to the nearest tenth.) - Correct Answer-3.5 Calculate the mg/hour infusing, 50 mg : 250 ml = X : 75 ml 250X = 3750 and X = 15 mg/hour. Next, convert mg/hr to mcg/hour, 15 mg/hour = 1 mg / 1000 mcg = 15,000 mcg/hour, then divide by 60 min = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min = 3.45 = 3.5 mcg/kg/minute. A client who weighs 70 kg is receiving a dopamine solution of 800 mg/500 ml normal saline at 5 ml/hour. How many mcg/kg/minute is the client receiving? (Enter numeric value only. If rounding is required, round to the nearest tenth.) - Correct Answer-1.9 To change ml/hour to mcg/kg/minute, use the formula: desired rate (5 ml/hour) / volume available (500 ml) x dose available (800 mg) = 8 mg/hour. Next, convert milligrams/hour to mcg/kg/minute: mg (8) x 1000 / kg (70) / 60 minutes = 1.904 = 1.9 mcg/kg/minute. A client is receiving an IV solution of sodium chloride 0.9% (Normal Saline) 250 ml with amiodarone (Cordarone) 1 gram at 17 ml/hour. How many mg/minute of amiodarone is infusing? (Enter numeric value only. If rounding is required, round to the nearest tenth.) - Correct Answer-Convert grams to mg, 1 gram equals 1,000 mg. Using ratio and proportion - 1,000 mg : 250 ml :: X mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution concentration of amiodarone. The infusion rate (ml/hour) x concentration (mg/ml) divided by 60 minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 = 1.1 mg/minute. A client who weighs 176 pounds is receiving an IV infusion with esmolol hydrochloride (Brevibloc) at 48 ml/hour. The IV solution is labeled with the concentration of Brevibloc 10 mg/ml. How many mcg/kg/minute is the client receiving? (Enter numeric value only.) - Correct Answer-100 Convert pounds to kg by dividing 176 pounds by 2.2 pounds = 80 kg. Convert the IV concentration from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000 mcg. Infusion rate (48 ml/hour) x concentration (10,000 mcg/ml) divided by 60 minutes/hour x 80 kg = 48 x 10,000 divided by 60 x 80 = 480,000 / 4800 = 100 mcg/kg/minute. The nurse is preparing the change-of-shift report for a client who has a 265 ml secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an infusion pump. The nurse should report that how many ml remain to be infused by the oncoming nurse? (Enter numeric value only.) - Correct Answer-95 85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml (amount infused) = 95 ml remain to be infused. A male client receives a prescription for ondansetron hydrochloride (Zofran) 4 mg IV to prevent postoperative nausea after an inguinal hernia repair. The medication is available in 2 mg/ml. How many ml should the nurse administer? (Enter numeric value only.) - Correct Answer-2 Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X = 2 The nurse is preparing to administer Hepatitis B Vaccine, Recombinant (Energix-B) 5 mcg IM to a school-aged child. The vaccine is labeled, 10 mcg/ml. How many ml should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth). - Correct Answer-1 or 0.5 Use ratio and proportion, 5 mcg : X ml :: 10 mcg : 1ml 10X = 5 X = 0.5 ml A client's daily PO prescription for aripiprazole (Abilify) is increased from 15 mg to 30 mg. The medication is available in 15 mg tablets, and the client already received one tablet today. How many additional tablets should the nurse administer so the client receives the total newly prescribed dose for the day? (Enter numeric value only.) - Correct Answer-1 30 mg (total dose) - 15 mg (dose already administered) = 15 mg that still needs to be administered. Using the Desired/Have formula: 15 mg/15 mg = 1 tablet At the end of the shift, the nurse is recording the fluid balance for a client receiving a continuous gastrostomy tube (GT) feeding. Based on the client's records, how many ml should the nurse record for the total fluid balance (intake - output) for the shift that started at 0700 and ended at 1900? (Enter numeric value only.) (Click on each image asset for additional information.) - Correct Answer-695 The tube feeding is administered at 75 ml/hour for 11 hours () and then turned off for one hour because the residual is greater than 200 ml. 11 hours x 75 ml/hr = 825 ml. Three doses of 20 ml of medication are administered, with 10 ml of water used to flush the GT before and after each dose. 20 ml x 3 doses = 60 ml; 10 ml (flush) x 2 x 3 doses = 60 ml; so 825 ml + 60 ml + 60 ml = 945 ml. 250 ml of residual is removed and not replaced. 945 ml - 250 ml = 695 ml total fluid balance (Intake - output). The nurse is administering a 250 milliliter (ml) intravenous solution to be infused over 2 hours. How many ml/hour should the nurse program the infusion pump? (Enter numeric value only.) - Correct Answer-125 250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125 ml/hr The nurse is preparing to administer 0.25 mg of bumetanide (Bumex) IV. The medication is available in a vial labeled 1 mg/4 ml. How many ml of medication should the nurse administer? (Enter numeric value only.) - Correct Answer-1 Using the Desired/Have x Volume formula: Desired = 0.25 mg Have = 1 mg Volume = 4 ml 0.25 mg/1 mg x 4 ml = 1 ml A client with hypertension receives a prescription for carteolol (Cartel) 7.5 mg PO daily. The drug is available in 2.5 mg tablets. How many tablets should the nurse administer? (Enter numeric value only.) - Correct Answer-3 Using D/H: 7.5 mg / 2.5 mg = 3 tablets The healthcare provider prescribes trimethoprim-sulfamethoxazole (Bactrim-DS Oral Suspension) 120 mg BID for a child with bronchitis. The Bactrim bottle is labeled 200 mg/5ml. How many ml should the nurse administer at each dose? (Enter numeric value only.) - Correct Answer-3 Using the formula D/H x Q, 120/200 x 5 = 3 ml A 180-pound adult male is admitted to the Emergency Center after receiving thermal burns to 60 percent of his body. Using the Parkland formula of 4 ml/kg/24 hours, the client should receive how many ml of fluid during the first 24 hours? (Enter numeric value only. If rounding is required, round to the nearest whole number.) - Correct Answer-19632 Using the Parkland formula, the client's fluid requirements for the first 24 hours after injury: 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent burn. Convert 180 pounds to kg = 180 / 2.2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632 ml over the first 24 hours. The healthcare provider prescribes acetazolamide (Diamox) 600 mg/m2/day divided into 3 doses. The nurse calculates the child's body surface area (BSA) as 0.7 m2. How many mg should the child receive per dose? (Enter numeric value only.) - Correct Answer-140 Using the child's BSA, 0.7 m2, calculate the mg/dose, 600 mg x 0.7 m2 = 420 mg/day/3 doses = 140 mg/dose A loading dose of acetylcysteine (Mucomyst) 8 grams, which is available as a 20% solution (200 mg acetylcysteine per ml) is prescribed by nasogastric tube for a client with acetaminophen toxicity. How many ml of diluent should be added to the medication to obtain a 1:4 concentration? (Enter numeric value only. If rounding is required, round to the nearest whole number.) - Correct Answer-120 8 grams = 8,000 mg prescribed dose. Using the formula, D/H x Q, 8,000 mg / 200 mg x 1 ml = 40 ml of the 20% solution. Dilute the 40 ml to a 1:4 concentration for administration using ratio and proportion, 1 : 4 solution :: 40 ml : X X= 160 ml total volume to administer. Subtract total volume of 160 ml - 40 ml of 20% concentration = 120 ml diluent is added to obtain a 1:4 concentration. A child who weighs 55 pounds receives a prescription for atovaquone with proguanil (Malarone Pediatric) 125 mg/50 mg PO daily. A drug reference states that children 11 to 20 kg should receive 1 pediatric tablet daily; 21 to 30 kg should receive 2 pediatric tablets daily; 31 to 40 kg should receive 3 pediatric tablets daily; and greater than 40 kg should receive 1 adult tablet daily with food. The drug is available as atovaquone 62.5 mg/proguanil 25 mg pediatric tablets. How many tablets should the nurse administer? - Correct Answer-2 Calculate each drug component dose, using the formula, D/H 125 mg / 62.5 mg (atovaquone) = 2 combined with 50 mg / 25 mg (proguanil) = 2. The child should receive 2 tablets. A client receives a prescription for azithromycin (Zithromax) 500 mg PO x 3 days. Azithromycin is available as 250 mg scored tablets. How many tablets should the nurse administer per dose? (Enter numeric value only. - Correct Answer-2 Using the formula, D/H 500 mg/250 mg = 2 tablets A child who is scheduled for a kidney transplant receives a prescription for basiliximab (Simulect) 20 mg IV 2 hours prior to surgery. The medication is available in a 20 mg vial that is reconstituted by adding 5 ml sterile water for injection, and administered in a 50 ml bag of normal saline over 30 minutes. The nurse should program the infusion pump to deliver how many ml/hour? (Enter numeric value only. - Correct Answer-110 After reconstituting the medication vial, the nurse adds the 5 ml of medication to the 50 ml of sterile water to result in a 55 ml volume to infuse in 30 minutes. Using the formula, Volume/Time = 55 ml / 0.5 hours = Continues...