Ati Dosage Calculation RN Adult Medical Surgical
Total Questions : 63
Showing 25 questions, Sign in for moreA nurse is preparing to administer pentamidine 4 mg/kg IM to a client who weighs 154 lb. Available is pentamidine 100 mg/mL for injection. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
To calculate the dose of pentamidine in milliliters (mL) that the nurse should administer, we can use the following steps:
Explanation
Convert the patient's weight from pounds to kilograms:
154 lb ÷ 2.2 = 70 kg
Calculate the dose of pentamidine:
4 mg/kg × 70 kg = 280 mg
Determine the volume to be administered:
We have 100 mg/mL concentration of pentamidine.
280 mg ÷ 100 mg/mL = 2.8 mL
Therefore, the nurse should administer 2.8 mL of pentamidine to the client.
A nurse is preparing to administer hydrochlorothiazide 150 mg PO daily in 3 equally divided doses. Available is hydrochlorothiazide oral solution 50 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the volume of hydrochlorothiazide oral solution that the nurse should administer per dose, we can use the following steps:
Determine the total daily dose:
The total daily dose is 150 mg.
Divide the total daily dose into 3 equally divided doses:
150 mg ÷ 3 = 50 mg per dose
Calculate the volume to be administered per dose:
The available oral solution has a concentration of 50 mg/5 mL.
50 mg ÷ 50 mg/5 mL = 5 mL
Therefore, the nurse should administer 5 mL of hydrochlorothiazide oral solution per dose.
A nurse is preparing to administer morphine 7.5 mg subcutaneous. Available is morphine injection 10 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the volume of morphine injection that the nurse should administer, we can use the following steps:
Determine the volume to be administered:
We have a concentration of 10 mg/mL.
7.5 mg ÷ 10 mg/mL = 0.75 mL
Therefore, the nurse should administer 0.75 mL of morphine injection subcutaneously.
A nurse is preparing to administer cefazolin 250 mg via intermittent IV bolus every 8 hr. Available is cefazolin 500 mg vial. The package insert instructs to add 2 mL of sterile water to yield a concentration of 225 mg/mL and then add to 50 mL of 0.9% sodium chloride. How many mL of cefazolin should the nurse add to the 50 mL of 0.9% sodium chloride? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of cefazolin that the nurse should add to the 50 mL of 0.9% sodium chloride, we can use the following steps:
Calculate the amount of cefazolin needed to prepare the solution:
The concentration to be achieved is 225 mg/mL.
The required dose is 250 mg.
Calculate the volume of cefazolin needed:
250 mg ÷ 225 mg/mL = 1.111... mL
Rounded to the nearest tenth, the nurse should add 1.1 mL of cefazolin to the 50 mL of 0.9% sodium chloride.
Therefore, the nurse should add 1.1 mL of cefazolin to the 50 mL of 0.9% sodium chloride to prepare the solution for IV administration.
A nurse is preparing to administer rifampin 20 mg/kg/day PO in two divided doses to a client who weighs 132 lb and has tuberculosis. The amount available is rifampin 150 mg capsules. How many capsules should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To determine how many capsules of rifampin the nurse should administer per dose, we can follow these steps:
Convert the client's weight from pounds to kilograms:
132 lb ÷ 2.2 = 59.9 kg (rounded to one decimal place)
Calculate the total daily dose of rifampin:
20 mg/kg/day × 59.9 kg = 1198 mg/day
Divide the total daily dose into two equal doses for administration:
1198 mg/day ÷ 2 = 599 mg per dose
Calculate the number of capsules needed per dose:
150 mg per capsule
599 mg per dose ÷ 150 mg per capsule = 3.9933...
Rounding to the nearest whole number, the nurse should administer 4 capsules per dose.
Therefore, the nurse should administer 4 capsules of rifampin per dose.
A nurse is preparing to administer 0.45% sodium chloride 2.5 L IV to infuse over 24 hr. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
The nurse needs to administer 2.5 L of 0.45% sodium chloride IV over 24 hours.
We know that 1 L is equal to 1000 mL.
So, 2.5 L is equal to 2.5 x 1000 mL/L = 2500 mL
Therefore, the nurse should administer 2500 mL over 24 hours.
A nurse is obtaining a medication history from a client who reports taking 1 oz of magnesium hydroxide daily as a laxative. The nurse should identify that this dose equates to how many mL? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To convert 1 ounce (oz) of magnesium hydroxide to milliliters (mL), we can use the given metric equivalent:
1 ounce (oz) = 30 mL
Therefore, 1 ounce (oz) is equal to 30 mL.
A nurse is preparing to administer gentamicin 5 mg/kg via intermittent IV bolus to a client who weighs 210 lb. The amount available is gentamicin 10 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of gentamicin the nurse should administer in milliliters (mL) for a client who weighs 210 lb, we can use the following steps:
Given:
Client's weight: 210 lb
Gentamicin dose: 5 mg/kg
Available concentration: 10 mg/mL
Step 1: Convert the client's weight from pounds (lb) to kilograms (kg)
Client's weight in kg = Client's weight in lb / 2.2
Client's weight in kg = 210 lb / 2.2
Client's weight in kg ≈ 95.45 kg
Step 2: Calculate the total dose of gentamicin required
Total dose = Client's weight in kg × Gentamicin dose
Total dose = 95.45 kg × 5 mg/kg
Total dose = 477.25 mg
Step 3: Calculate the volume of gentamicin to be administered in mL
Volume = Total dose / Concentration
Volume = 477.25 mg / 10 mg/mL
Volume ≈ 47.725 mL
Rounding to the nearest whole number:
Volume ≈ 48 mL
Therefore, the nurse should administer approximately 48 mL of gentamicin via intermittent IV bolus to the client who weighs 210 lb.
A nurse is preparing to administer dextrose 5% in 0.45% sodium chloride 3 L IV to infuse over 24 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the rate at which the nurse should set the IV pump to deliver dextrose 5% in 0.45% sodium chloride over 24 hours, we can use the following steps:
Given:
Total IV fluid volume: 3 L
Infusion duration: 24 hours
Step 1: Convert the total IV fluid volume from liters (L) to milliliters (mL)
Total volume = 3 L × 1000 mL/L
Total volume = 3000 mL
Step 2: Calculate the rate of infusion per hour
Rate = Total volume / Infusion duration
Rate = 3000 mL / 24 hr
Rate ≈ 125 mL/hr
Rounding to the nearest whole number:
Rate ≈ 125 mL/hr
Therefore, the nurse should set the IV pump to deliver approximately 125 mL/hr for the infusion of dextrose 5% in 0.45% sodium chloride over 24 hours.
A nurse is preparing to administer enoxaparin 40 mg subcutaneous for prevention of deep vein thrombosis. Available is enoxaparin 100 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Enoxaparin dose: 40 mg
Available concentration: 100 mg/mL
Step 1: Calculate the volume of enoxaparin to be administered in mL
Volume = Enoxaparin dose / Concentration
Volume = 40 mg / 100 mg/mL
Volume = 0.4 mL
Rounding to the nearest tenth:
Volume = 0.4 mL
Therefore, the nurse should administer 0.4 mL of enoxaparin subcutaneously for the prevention of deep vein thrombosis.
A nurse is preparing to administer amoxicillin 775 mg PO. Available is amoxicillin oral suspension 400 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
The nurse needs to administer 775 mg of amoxicillin. The available amoxicillin oral suspension is 400 mg/5 mL, which means there are 400 mg of amoxicillin in every 5 mL of the suspension.
Therefore, for a 775 mg dose, the nurse should administer:
775 mg/(400 mg/5mL) = 9.6875 mL of the suspension
So, the nurse should administer approximately 10 mL (rounded to the nearest whole number).
A nurse is preparing to administer ampicillin 500 mg IM every 6 hr. Available is ampicillin 500 mg vial. The package insert instructs adding 1.8 mL of sterile water to yield ampicillin 250 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of ampicillin the nurse should administer per dose in milliliters (mL) for a 500 mg IM dose, we can use the following steps:
Given:
Ampicillin dose: 500 mg
Available concentration after reconstitution: 250 mg/mL
Volume of sterile water to be added: 1.8 mL
Step 1: Calculate the amount of ampicillin to be administered per dose in mL
First, we need to reconstitute the ampicillin vial to yield the desired concentration of 250 mg/mL.
The concentration after reconstitution is 250 mg/mL, and the total dose required is 500 mg. Therefore, the nurse needs to administer:
Volume = Ampicillin dose / Concentration
Volume = 500 mg / 250 mg/mL
Volume = 2 mL
Rounding to the nearest whole number:
Volume = 2 mL
Therefore, the nurse should administer 2 mL of the reconstituted ampicillin solution per dose.
A nurse is preparing to administer exenatide 10 mcg subcutaneous. Available is exenatide 250 mcg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of exenatide 10 mcg needed from a concentration of 250 mcg/mL, we can use the following formula:
Amount (mL) = (Desired dose in mcg) / (Concentration in mcg/mL)
Plugging in the values:
Amount (mL) = 10 mcg / 250 mcg/mL
Calculating:
Amount (mL) = 0.04 mL
Rounding to the nearest hundredth:
Amount to administer = 0.04 mL
A nurse is preparing to administer venlafaxine 75 mg/day in two divided doses to a client who has depression. Available are 37.5 mg tablets. How many tablets should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To determine the number of tablets the nurse should administer for each dose, we can use the following calculation:
75 mg/day ÷ 2 doses = 37.5 mg/dose
Since 37.5 mg tablets are available, the nurse should administer 1 tablet with each dose.
A nurse is preparing to administer phenytoin 200 mg via a gastrostomy tube. Available is phenytoin oral suspension 125 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of phenytoin oral suspension to administer, we can use the following formula:
Amount to administer (mL) = (Desired dose (mg) / Available dose (mg/mL))
Plugging in the given values:
Amount to administer (mL) = (200 mg / 125 mg/5 mL)
Now, let's solve for the amount to administer:
Amount to administer (mL) = (200 mg / 125 mg/5 mL) = (200 / 125) 5 = 8
So, the nurse should administer 8 mL of phenytoin oral suspension via the gastrostomy tube.
A nurse is preparing to administer epoetin 7,000 units subcutaneous for management of anemia related to chronic kidney disease. Available is 10,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of epoetin to administer, we can use the following formula:
Amount to administer (mL) = (Desired dose (units) / Available dose (units/mL))
Plugging in the given values:
Amount to administer (mL) = (7,000 units / 10,000 units/mL)
Now, let's solve for the amount to administer:
Amount to administer (mL) = (7,000 / 10,000) = 0.7 mL
So, the nurse should administer 0.7 mL of epoetin subcutaneously for the management of anemia related to chronic kidney disease.
A nurse is preparing to administer hydrocortisone 150 mg via IV bolus. Available is hydrocortisone 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of hydrocortisone to administer, we can use the following formula:
Amount to administer (mL) = (Desired dose (mg) / Available dose (mg/mL))
Plugging in the given values:
Amount to administer (mL) = (150 mg / 50 mg/mL)
Now, let's solve for the amount to administer:
Amount to administer (mL) = (150 / 50) = 3 mL
So, the nurse should administer 3 mL of hydrocortisone via IV bolus.
A nurse is preparing to administer heparin 7,500 units subcutaneous. Available is heparin 10,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of heparin to administer, we can use the following formula:
Amount to administer (mL) = (Desired dose (units) / Available dose (units/mL))
Plugging in the given values:
Amount to administer (mL) = (7,500 units / 10,000 units/mL)
Now, let's solve for the amount to administer:
Amount to administer (mL) = (7,500 / 10,000) = 0.75 mL
So, the nurse should administer 0.75 mL of heparin subcutaneously.
A nurse is preparing to administer 12 L of lactated Ringer’s IV to infuse over 24 hr. Half of the fluid is to be administered in the first 8 hr. The nurse should set the IV pump to deliver how many mL/hr during the first 8 hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the infusion rate for the first 8 hours, we can use the following formula:
Infusion rate (mL/hr) = (Volume to be infused / Time for infusion)
First, we need to find the volume to be infused in the first 8 hours:
Volume for the first 8 hours = Total volume / 2 = 12 L / 2 = 6 L = 6000 mL
Now we can calculate the infusion rate for the first 8 hours:
Infusion rate = 6000 mL / 8 hr = 750 mL/hr
Therefore, the nurse should set the IV pump to deliver 750 mL/hr during the first 8 hours.
A nurse is preparing to administer 0.9% sodium chloride 1,200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the IV pump rate for the 0.9% sodium chloride 1,200 mL IV to infuse over 8 hours, we can use the following formula:
IV pump rate (mL/hr) = Total volume (mL) / Time (hr)
Using the given values:
Total volume = 1,200 mL
Time = 8 hours
Plugging these values into the formula:
IV pump rate = 1,200 mL / 8 hr
IV pump rate = 150 mL/hr
So, the nurse should set the IV pump to deliver 150 mL/hr to infuse the 1,200 mL of 0.9% sodium chloride over 8 hours.
A nurse is preparing to administer amoxicillin 750 mg PO. Available is amoxicillin liquid suspension 250 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of the amoxicillin liquid suspension that the nurse should administer, we can use the following formula:
Amount to administer (mL) = (Desired dose in mg) / (Amount of drug in 1 mL)
Given:
Desired dose = 750 mg
Amount of drug in 1 mL = 250 mg/5 mL = 50 mg/mL
Now, let's calculate the amount to administer:
Amount to administer (mL) = 750 mg / 50 mg/mL
Amount to administer (mL) = 15 mL
Rounding to the nearest whole number, the nurse should administer 15 mL of the amoxicillin liquid suspension.
A nurse is preparing to administer megestrol 200 mg PO to a client. Available is megestrol oral suspension 40 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of megestrol oral suspension that the nurse should administer, we can use the following formula:
Amount to administer (mL) = (Desired dose in mg) / (Amount of drug in 1 mL)
Given:
Desired dose = 200 mg
Amount of drug in 1 mL = 40 mg/mL
Now, let's calculate the amount to administer:
Amount to administer (mL) = 200 mg / 40 mg/mL
Amount to administer (mL) = 5 mL
Rounding to the nearest whole number, the nurse should administer 5 mL of the megestrol oral suspension.
A nurse is preparing to administer epoetin 7,000 units subcutaneous for management of anemia related to chronic kidney disease. Available is 10,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of epoetin that the nurse should administer, we can use the following formula:
Amount to administer (mL) = (Desired dose in units) / (Amount of drug in 1 mL)
Given:
Desired dose = 7,000 units
Amount of drug in 1 mL = 10,000 units/mL
Now, let's calculate the amount to administer:
Amount to administer (mL) = 7,000 units / 10,000 units/mL
Amount to administer (mL) = 0.7 mL
Rounding to the nearest tenth, the nurse should administer 0.7 mL of the epoetin.
A nurse is preparing to administer belimumab 10 mg/kg via intermittent IV bolus to a client who weighs 136 lb. Available is belimumab 80 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of belimumab that the nurse should administer, we can use the following steps:
Convert the patient's weight from pounds to kilograms.
Multiply the patient's weight in kilograms by the dosage of belimumab (10 mg/kg) to find the total dosage required.
Determine the volume of the drug needed using the concentration of the available belimumab solution.
Given:
Patient's weight = 136 lb
Dosage of belimumab = 10 mg/kg
Available concentration of belimumab = 80 mg/mL
Let's calculate step by step:
Convert patient's weight from pounds to kilograms:
Patient's weight in kg = 136 lb × (1 kg / 2.2 lb) ≈ 61.8 kg
Calculate the total dosage required:
Total dosage = 10 mg/kg × 61.8 kg ≈ 618 mg
Determine the volume of the drug needed using the concentration of the available belimumab solution:
Volume of drug = Total dosage / Concentration of belimumab
Volume of drug = 618 mg / 80 mg/mL ≈ 7.7 mL
Rounding to the nearest whole number, the nurse should administer 8 mL of the belimumab.
A nurse is preparing to administer tobramycin 3 mg/kg/day IM in three divided doses to a client who weighs 85 kg. The amount available is Tobramycin 40 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the amount of tobramycin that the nurse should administer per dose, we can use the following steps:
Calculate the total daily dosage required based on the client's weight and the prescribed dosage.
Determine the dosage per each of the three divided doses.
Calculate the volume of the drug needed for each dose using the concentration of the available tobramycin solution.
Given:
Client's weight = 85 kg
Prescribed dosage = 3 mg/kg/day
Available concentration of tobramycin = 40 mg/mL
Let's calculate step by step:
Calculate the total daily dosage required:
Total daily dosage = 3 mg/kg/day × 85 kg = 255 mg/day
Determine the dosage per each of the three divided doses:
Dosage per dose = Total daily dosage / 3 = 255 mg / 3 = 85 mg
Calculate the volume of the drug needed for each dose using the concentration of the available tobramycin solution:
Volume of drug per dose = Dosage per dose / Concentration of tobramycin
Volume of drug per dose = 85 mg / 40 mg/mL ≈ 2.1 mL
Rounding to the nearest tenth, the nurse should administer 2.1 mL of the tobramycin per dose.
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