Question 1

A patient is to receive 50 units of insulin each day. How many days will a 10-mL vial of NPH insulin last?

Accepted Answer

The answer of A patient is to receive 50 units...

Question 2

The pharmacy purchases 1000 tablets for $99.99. The pharmacist wants to mark up a prescription of 30 tablets by 60%. What is the cost for the patient?

Accepted Answer

The cost per tablet is $99.99 / 1000 = $0.09999. For 30 tablets, the cost is 30 * $0.09999 = $2.9997. A 60% markup on $2.9997 is $2.9997 * 0.60 = $1.79982. The total cost for the patient is $2.9997 + $1.79982 = $4.79952, which rounds to $4.80.

Question 3

A medication is supplied in a 400-mg scored tablet. A physician prescribes 200 mg every 6 hours for 14 days. How many tablets will be dispensed for the entire course of therapy?

Accepted Answer

Since the medication is prescribed as 200 mg every 6 hours, and there are 24 hours in a day, the patient will take 4 doses per day. Over 14 days, this amounts to 4 doses/day * 14 days = 56 doses. Each 400 mg tablet can be split into two 200 mg doses, so 56 doses / 2 doses per tablet = 28 tablets.

Question 4

How much 1% boric acid solution and 5% boric acid solution are needed to make 60 mL of a 3% boric acid solution?

Accepted Answer

The answer of How much 1% boric acid solution and...

Question 5

How many milliliters of potassium chloride (KCl) solution should be added to 1 L of intravenous (IV) normal saline if 65 mEq total is needed? KCl is supplied in 2 mEq/mL.

Accepted Answer

To obtain 65 mEq of KCl when the solution is 2 mEq/mL, divide the total mEq needed by the concentration: 65 mEq / 2 mEq/mL = 32.5 mL.

Question 6

How many tablets are needed for a 0.375 mg dose of digoxin (Lanoxin)? The available strength of digoxin is a 250-mcg tablet.

Accepted Answer

To find the number of tablets needed, convert 0.375 mg to micrograms (mcg) since the available tablet strength is in mcg. 0.375 mg is equal to 375 mcg. Each tablet is 250 mcg, so 375 mcg / 250 mcg per tablet = 1.5 tablets.

Question 7

How many 1-pound jars of petroleum jelly should be ordered to prepare 600 g of 1% ointment?

Accepted Answer

To prepare a 1% ointment, the total weight of the ointment is considered. Here, 600 g of ointment contains 1% of the active ingredient, meaning the rest (99%) is the petroleum jelly. Since 1 pound is approximately 454 grams, and the total weight of the ointment is 600 grams, slightly more than 1 pound but less than 2 pounds of petroleum jelly is needed. Therefore, 2 jars are required to ensure there is enough petroleum jelly to prepare the ointment.

Question 8

A 44-pound child is prescribed azithromycin (Zithromax) oral suspension 10 mg/kg/d for 3 days. What is the daily dose in milliliters? The available strength is 100 mg/5 mL.

Accepted Answer

The answer of A 44-pound child is prescribed azithromycin (Zithromax)...

Question 9

What is the infusion rate in millimeters per hour if 500 mL is infused over 4 hours?

Accepted Answer

To find the infusion rate, divide the total volume by the total time: 500 mL / 4 hours = 125 mL/hr.

Question 10

A pharmacy buys $2300 worth of inventory in the month of September. If the invoice is paid before October 10th, a 7.5% discount is applied to the total. How many dollars would the pharmacy save after the discount is applied?

Accepted Answer

The pharmacy would save $172.50 after the discount is applied, calculated as 7.5% of $2300 ($2300 * 0.075 = $172.50).

Question 11

How many milliliters of 0.9% sodium chloride solution can be made from 20 g of sodium chloride?

Accepted Answer

A 0.9% sodium chloride solution means 0.9 grams of sodium chloride per 100 milliliters of solution. To find out how many milliliters can be made from 20 grams, use the proportion: (0.9 g / 100 mL) = (20 g / x mL). Solving for x gives 2222 mL.

Question 12

A 60-pound child is prescribed amoxicillin 20 mg/kg at bedtime * 10days for otitis media prophylaxis. How many milligrams should be administered per dose?

Accepted Answer

The child weighs 60 pounds. To convert pounds to kilograms, divide by 2.2 (60 / 2.2 = 27.27 kg). The prescribed dose is 20 mg/kg, so multiply the child's weight in kg by the dose (27.27 kg * 20 mg/kg = 545.4 mg). The closest option to 545.4 mg is 600 mg.

Question 13

How many grams of dextrose are needed to prepare 500 mL of 20% dextrose solution?

Accepted Answer

A 20% dextrose solution means 20 grams of dextrose per 100 mL of solution. Therefore, for 500 mL, you need 5 times that amount, which is 100 grams.

Question 14

How many milliliters of 10% dextrose is needed to prepare 1 L of 50% dextrose from a mixture of 10% dextrose in water (D₁₀W) and 70% dextrose in water (D₇₀W)?

Accepted Answer

The answer of How many milliliters of 10% dextrose is...

Question 15

What is the percent strength of a 1:10,000 solution?

Accepted Answer

A 1:10,000 solution means 1 part solute in 10,000 parts solution, which is equivalent to 0.01% concentration.

Question 16

How many milliliters of U-100 insulin should be administered for a 45-unit dose?

Accepted Answer

U-100 insulin means there are 100 units of insulin per milliliter. Therefore, for a 45-unit dose, you would need 45/100 = 0.45 milliliters.

Question 17

A total parenteral nutrition (TPN) order calls for 500 mL of 10% Travasol, 250 mL of 50% dextrose in 250 mL of sterile water. What is the final concentration of the Travasol?

Accepted Answer

The final concentration of Travasol is calculated by dividing the volume of Travasol by the total volume of the solution. The total volume of the solution is 500 mL (Travasol) + 250 mL (dextrose) + 250 mL (water) = 1000 mL. The concentration of Travasol is (500 mL / 1000 mL) * 100 = 50%, not its dilution in the final mixture. The question seems to be aiming at understanding the dilution effect, but the calculation provided directly calculates the percentage of the volume of Travasol in the total solution, which would be 50% based on the volumes given. However, given the options and the typical approach to such questions, there seems to be a misunderstanding in the interpretation. The correct approach to find the "final concentration" in the context of such questions usually involves calculating how the components contribute to the overall nutritional or chemical concentration, not just their volume ratios. Without specific details on how Travasol's concentration changes with dilution in this context, the direct volume ratio calculation doesn't accurately reflect a change in nutritional concentration. The question as stated doesn't provide a clear path to any of the given answer choices based on standard calculations for dilution or concentration adjustments.

Question 18

An order calls for 500 mL of heparin is to be administered over 18 hours. The tubing size delivers 15 drops per milliliter (gtt/mL). What is the drip rate?

Accepted Answer

The drip rate is calculated using the formula: (Volume in mL * Drop factor) / Time in minutes. Here, it's (500 mL * 15 gtt/mL) / (18 hours * 60 minutes/hour) = 7500 gtt / 1080 minutes = 6.94 gtt/min, which rounds to 7 gtt/min.

Question 19

A 1 L IV is ordered to be administered over 8 hours. What is the infusion rate in milliliters per hour (mL/hr)?

Accepted Answer

To calculate the infusion rate in mL/hr, divide the total volume (1 L = 1000 mL) by the total time in hours (8 hours). 1000 mL / 8 hours = 125 mL/hr.

Question 20

How many milliliters of diluent are needed to dilute 500 mL of 70% dextrose to 50% dextrose?

Accepted Answer

To dilute 500 mL of 70% dextrose to 50% dextrose, you need to add 200 mL of diluent. This is calculated using the formula: C1V1 = C2(V1 + V2), where C1 is the initial concentration (70%), V1 is the initial volume (500 mL), C2 is the final concentration (50%), and V2 is the volume of diluent to be added. Solving for V2 gives 200 mL.

Quiz 6: Conversions and Calculations

A patient is to receive 50 units of insulin each day. How many days will a 10-mL vial of NPH insulin last?

The pharmacy purchases 1000 tablets for $99.99. The pharmacist wants to mark up a prescription of 30 tablets by 60%. What is the cost for the patient?

A medication is supplied in a 400-mg scored tablet. A physician prescribes 200 mg every 6 hours for 14 days. How many tablets will be dispensed for the entire course of therapy?

How much 1% boric acid solution and 5% boric acid solution are needed to make 60 mL of a 3% boric acid solution?

How many milliliters of potassium chloride (KCl) solution should be added to 1 L of intravenous (IV) normal saline if 65 mEq total is needed? KCl is supplied in 2 mEq/mL.

How many tablets are needed for a 0.375 mg dose of digoxin (Lanoxin) ? The available strength of digoxin is a 250-mcg tablet.

How many 1-pound jars of petroleum jelly should be ordered to prepare 600 g of 1% ointment?

A 44-pound child is prescribed azithromycin (Zithromax) oral suspension 10 mg/kg/d for 3 days. What is the daily dose in milliliters? The available strength is 100 mg/5 mL.

What is the infusion rate in millimeters per hour if 500 mL is infused over 4 hours?

A pharmacy buys $2300 worth of inventory in the month of September. If the invoice is paid before October 10th, a 7.5% discount is applied to the total. How many dollars would the pharmacy save after the discount is applied?

How many milliliters of 0.9% sodium chloride solution can be made from 20 g of sodium chloride?

A 60-pound child is prescribed amoxicillin 20 mg/kg at bedtime * 10days for otitis media prophylaxis. How many milligrams should be administered per dose?

How many grams of dextrose are needed to prepare 500 mL of 20% dextrose solution?

How many milliliters of 10% dextrose is needed to prepare 1 L of 50% dextrose from a mixture of 10% dextrose in water (D₁₀W) and 70% dextrose in water (D₇₀W) ?

What is the percent strength of a 1:10,000 solution?

How many milliliters of U-100 insulin should be administered for a 45-unit dose?

A total parenteral nutrition (TPN) order calls for 500 mL of 10% Travasol, 250 mL of 50% dextrose in 250 mL of sterile water. What is the final concentration of the Travasol?

An order calls for 500 mL of heparin is to be administered over 18 hours. The tubing size delivers 15 drops per milliliter (gtt/mL) . What is the drip rate?

A 1 L IV is ordered to be administered over 8 hours. What is the infusion rate in milliliters per hour (mL/hr) ?

How many milliliters of diluent are needed to dilute 500 mL of 70% dextrose to 50% dextrose?

Quiz 6: Conversions and Calculations

A patient is to receive 50 units of insulin each day. How many days will a 10-mL vial of NPH insulin last?

The pharmacy purchases 1000 tablets for $99.99. The pharmacist wants to mark up a prescription of 30 tablets by 60%. What is the cost for the patient?

A medication is supplied in a 400-mg scored tablet. A physician prescribes 200 mg every 6 hours for 14 days. How many tablets will be dispensed for the entire course of therapy?

How much 1% boric acid solution and 5% boric acid solution are needed to make 60 mL of a 3% boric acid solution?

How many milliliters of potassium chloride (KCl) solution should be added to 1 L of intravenous (IV) normal saline if 65 mEq total is needed? KCl is supplied in 2 mEq/mL.

How many tablets are needed for a 0.375 mg dose of digoxin (Lanoxin) ? The available strength of digoxin is a 250-mcg tablet.

How many 1-pound jars of petroleum jelly should be ordered to prepare 600 g of 1% ointment?

A 44-pound child is prescribed azithromycin (Zithromax) oral suspension 10 mg/kg/d for 3 days. What is the daily dose in milliliters? The available strength is 100 mg/5 mL.

What is the infusion rate in millimeters per hour if 500 mL is infused over 4 hours?

A pharmacy buys $2300 worth of inventory in the month of September. If the invoice is paid before October 10th, a 7.5% discount is applied to the total. How many dollars would the pharmacy save after the discount is applied?

How many milliliters of 0.9% sodium chloride solution can be made from 20 g of sodium chloride?

A 60-pound child is prescribed amoxicillin 20 mg/kg at bedtime * 10days for otitis media prophylaxis. How many milligrams should be administered per dose?

How many grams of dextrose are needed to prepare 500 mL of 20% dextrose solution?

How many milliliters of 10% dextrose is needed to prepare 1 L of 50% dextrose from a mixture of 10% dextrose in water (D10W) and 70% dextrose in water (D70W) ?

What is the percent strength of a 1:10,000 solution?

How many milliliters of U-100 insulin should be administered for a 45-unit dose?

A total parenteral nutrition (TPN) order calls for 500 mL of 10% Travasol, 250 mL of 50% dextrose in 250 mL of sterile water. What is the final concentration of the Travasol?

An order calls for 500 mL of heparin is to be administered over 18 hours. The tubing size delivers 15 drops per milliliter (gtt/mL) . What is the drip rate?

A 1 L IV is ordered to be administered over 8 hours. What is the infusion rate in milliliters per hour (mL/hr) ?

How many milliliters of diluent are needed to dilute 500 mL of 70% dextrose to 50% dextrose?

How many milliliters of 10% dextrose is needed to prepare 1 L of 50% dextrose from a mixture of 10% dextrose in water (D₁₀W) and 70% dextrose in water (D₇₀W) ?