Dosage calculations Questions and Answers well Explained Latest 2024/2025 Update 100% Correct.
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Dosage calculations
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Dosage Calculations
A client with acute decompensated heart failure (HF) is to receive an IV infusion of 0.9% normal saline
with inamrinone (Inocor) 0.1 grams/100 ml at a rate of 8 mcg/kg/minute. The client' s current weight is
183 lbs. The nurse should program the infusion pump to deliver how many ml/hour? (Enter n...
Dosage calculations
A client with acute decompensated heart failure (HF) is to receive an IV infusion of 0.9% normal saline
with inamrinone (Inocor) 0.1 grams/100 ml at a rate of 8 mcg/kg/minute. The client' s current weight is
183 lbs. The nurse should program the infusion pump to deliver how many ml/hour? (Enter numeric
value only. If rounding is required, round to the nearest whole number.) - First convert the weight
into kilograms: 183 pounds/2.2 kg = 83 kg
Next calculate the number of mcg/kg/minute: 8 x 83 = 664 mcg/min
Calculate the number of mcg/hour: 664 x 60 minutes = 39,840 mcg/hour
Now calculate the number of ml/hour needed to administer 39,840 mcg/hour:
100,000 mcg : 250 ml :: 39,840 mcg : X = 100,000/39,840 :: 250/X and 100,000X = 3,984,000
X = 39.84 (rounded to) 40 ml/hour
A client who has heart failure with paroxysmal atrial tachycardia is receiving digoxin (Lanoxin) 0.45 mg IV
as the inital digitalizing dose. The pharmacy provides 0.25 mg/ml. How many ml should the nurse
administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.) - Using
the formula D/H x Q = 0.45 mg/0.25 mg x 1 mL = 1.8 ml
A child weighing 28.4 kg is in hypertensive crisis. The healthcare provider prescibes methyldopa
(Aldomet) 40 mg/kg/day IV in 4 divided doses. The pharmacy provides a 50 mg/ml injection vial. How
many ml should the nurse administer? (Enter numeric value only. If rounding is required, round to the
nearest tenth.) - First calculate the total mg dose/day: 40 mg x 28.4 kg = 1136 mg/day
Next divide the total mg into the 4 dosages for the day: 1136 mg/4 doses = 284 mg/dose
Using the Desired/Have formula: 284 mg/50mg x 1 ml = 5.68 ml/ dose, rounded to 5.7 ml.
A 9-month-old infant receives a prescription for digoxin 40 mcg PO daily. Digoxin Oral Solution, USP 50
mcg (0.05 mg) per ml is available. How many ml should the nurse administer? (Enter the numerical value
only. If rounding is required, round to the nearest tenth.) - Using ratio and proportion, 40 mcg : X
ml :: 50 mcg : 1 ml = 0.8 ml
A child weighing 28.4 kg is in hypertensive crisis. The healthcare provider prescibes methyldopa
(Aldomet) 40 mg/kg/day IV in 4 divided doses. The pharmacy provides a 50 mg/ml injection vial. How
many ml should the nurse administer? (Enter numeric value only. If rounding is required, round to the
, nearest tenth.) - First calculate the total mg dose/day: 40 mg x 28.4 kg = 1136 mg/dayNext divide
the total mg into the 4 dosages for the day: 1136 mg/4 doses = 284 mg/doseUsing the Desired/Have
formula: 284 mg/50mg x 1 ml = 5.68 ml/ dose, rounded to 5.7 ml.
A child who weighs 55 pounds receives a prescription for atovaquone with proguanil (Malarone
Pediatric) 125 mg/50mg PO daily. A drug reference states that children 11 - 20 kg should receive 1
pediatric tablet daily, 21 - 30 kg should receive 2 pediatric tablets daily, 31 - 40 kg should receive 3
pediatric tablets daily, and > 40 kg should receive 1 adult tablet daily with food. The drug is available as
atovaquone 62.5mg/proguanil 25 mg pediatric tablets. How many tablets should the nurse administer? -
2
A client is receiving an IV solution of 2 grams of medication diluted in 100 ml of normal saline over a one
hour time period. How many mg of medication is the client receiving per minute? (Enter numeric value
only. If rounding is required, round to the nearest whole number.) - 2 grams = 2000 mg
1 hour = 60 minutes
2000 mg/60 minutes = 33.333 mg/minute, rounded to 33 mg/minute
A client returns to the nursing unit from surgery with a prescription for Lactated Ringers solution 1000
mL to be infused over 10 hours. The IV administration set delivers 60 gtts/mL. The nurse should regulate
the infusion to deliver how many gtts/minute? - 100 gtt/min
A client weighing 86 kg is receiving dopamine at 8 mcg/kg/minute. The drug is dispensed as dopamine
800 mg/500 ml. The nurse should program the infusion pump to deliver how many ml/hour? (Enter
numeric value only. If rounding is required, round to the nearest tenth.) - First, change the
concentration of dispensed dopamine to mcg/ml. 1 mg : 1000 mcg :: 800 mg : X mcg = 800,000 mcg/500
ml = 1600 mcg/ ml.
Using the formula, prescribed dose (8 mcg/kg/minute) x 60 minute/hour x weight (86 kg) divided by the
concentration of the available drug (1600 mcg/ml) = 8 x 60 x 86 divided by 1600 = 25.8 ml/hour
A 110-pound, adult female is admitted to the Emergency Center after receiving burns to 40 percent of
her body. Using the Parkland formula, the client's fluid requirements for the first 24 hours after injury is
calculated using Lactated Ringer's 4 ml solution x Body weight (in kilograms) x Percent burn. The client
should receive one-half of the 24-hour calculated fluid volume in the first 8 hours of treatment. The
nurse should set the infusion pump to deliver how many ml/hour during the first 8 hours? (Enter the
numerical value only. If rounding is required, round to the nearest whole number.) - Using the
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