Nclexrn Flashcards: Medication Dosage Calculations

What this deck covers

This deck focuses on Medication Dosage Calculations, giving you a quick way to review the definitions, rules, and examples that matter most for Nclexrn.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: What is the safe dose in mg for $0.1\ \text{mg/kg}$ if the patient weighs $20\ \text{kg}$?

Answer: $2\ \text{mg}$. Calculates the total dose by multiplying the per-kilogram dose by the patient's weight.

Flashcard 2: What volume is administered if the order is $500\ \text{mg}$ and supply is $250\ \text{mg}/5\ \text{mL}$?

Answer: $10\ \text{mL}$. Applies the desired over have multiplied by quantity formula to find the liquid volume to administer.

Flashcard 3: What is the conversion between milligrams and micrograms?

Answer: $1\ \text{mg} = 1000\ \text{mcg}$. Establishes the metric conversion for precise dosing between milligrams and micrograms.

Flashcard 4: What is the conversion between liters and milliliters?

Answer: $1\ \text{L} = 1000\ \text{mL}$. Offers the metric volume conversion essential for fluid and IV calculations.

Flashcard 5: What is the conversion between milliliters and fluid ounces?

Answer: $1\ \text{fl oz} = 30\ \text{mL}$. Provides the conversion factor for fluid ounces to milliliters in volume-based calculations.

Flashcard 6: What is the drops per minute formula using drop factor, volume, and time?

Answer: $\text{gtt/min} = \frac{\text{mL} \times \text{gtt/mL}}{\text{min}}$. Computes drops per minute by multiplying the volume by the drop factor and dividing by the time in minutes.

Flashcard 7: What is the dose in mg if $0.25\ \text{g}$ is ordered?

Answer: $250\ \text{mg}$. Converts grams to milligrams by multiplying by 1000 to match common medication units.

Flashcard 8: What is the formula for infusion time in hours when volume and mL/hr are known?

Answer: $\text{hr} = \frac{\text{mL}}{\text{mL/hr}}$. Finds the infusion duration by dividing the total volume by the hourly rate.

Flashcard 9: What is the conversion between minutes and hours used for IV calculations?

Answer: $1\ \text{hr} = 60\ \text{min}$. Facilitates time unit conversion necessary for accurate IV infusion rate adjustments.

Flashcard 10: What is the drip rate in gtt/min for $100\ \text{mL}$ over $30\ \text{min}$ with $15\ \text{gtt/mL}$ tubing?

Answer: $50\ \text{gtt/min}$. Determines the drip rate using the formula of volume times drop factor divided by minutes.

Flashcard 11: What is the IV rate in mL/hr for $1000\ \text{mL}$ to infuse over $8\ \text{hr}$?

Answer: $125\ \text{mL/hr}$. Computes the hourly rate by dividing the total volume by the infusion time in hours.

Flashcard 12: What is the mL/hour formula for an IV infusion when volume and time are given?

Answer: $\text{mL/hr} = \frac{\text{mL}}{\text{hr}}$. Determines the hourly infusion rate by dividing the total volume by the infusion time in hours.

Flashcard 13: What is the basic dose formula using desired, have, and quantity (D/H × Q)?

Answer: $\text{Dose to give} = \frac{D}{H} \times Q$. Calculates the volume to administer by dividing the desired dose by the available concentration and multiplying by the quantity per unit.

Flashcard 14: What is the conversion between grams and milligrams?

Answer: $1\ \text{g} = 1000\ \text{mg}$. Provides the metric conversion factor for shifting between grams and milligrams in medication dosing.

Flashcard 15: What is the conversion between kilograms and pounds used in dosage calculations?

Answer: $1\ \text{kg} = 2.2\ \text{lb}$. Serves as the standard weight conversion factor for calculating body weight-based dosages.

Flashcard 16: What is the drip rate in gtt/min for $120\ \text{mL/hr}$ with a drop factor of $20\ \text{gtt/mL}$?

Answer: $40\ \text{gtt/min}$. Converts mL per hour to drops per minute by multiplying by drop factor and dividing by 60.

Flashcard 17: What is the dose in mcg if $0.06\ \text{mg}$ is ordered?

Answer: $60\ \text{mcg}$. Converts milligrams to micrograms by multiplying by 1000 for precise small-dose calculations.

Flashcard 18: What is the conversion between milliliters and teaspoons?

Answer: $1\ \text{tsp} = 5\ \text{mL}$. Represents the standard household measurement conversion for administering liquid medications via teaspoon.

Flashcard 19: What is the infusion time in hours for $500\ \text{mL}$ running at $125\ \text{mL/hr}$?

Answer: $4\ \text{hr}$. Calculates infusion duration by dividing the total volume by the hourly infusion rate.

Flashcard 20: What is the patient weight in kg if the weight is $154\ \text{lb}$?

Answer: $70\ \text{kg}$. Converts pounds to kilograms by dividing by 2.2 for weight-based dosing accuracy.

Flashcard 21: What is the mL dose if the order is $0.4\ \text{mg}$ and supply is $1\ \text{mg}/2\ \text{mL}$?

Answer: $0.8\ \text{mL}$. Uses ratio-proportion or the basic dose formula to compute the injectable volume based on concentration.

Flashcard 22: What is the tablet dose if the order is $750\ \text{mg}$ and tablets are $250\ \text{mg}$ each?

Answer: $3\ \text{tablets}$. Determines the number of tablets by dividing the ordered dose by the strength per tablet.

Flashcard 23: What is the insulin syringe unit-to-mL equivalence used for U-100 insulin?

Answer: $100\ \text{units} = 1\ \text{mL}$. Defines the concentration standard for U-100 insulin, allowing precise unit-to-volume conversions.

Flashcard 24: What is the formula to convert an IV rate from mL/hr to gtt/min?

Answer: $\text{gtt/min} = \frac{\text{mL/hr} \times \text{gtt/mL}}{60}$. Converts milliliters per hour to drops per minute by multiplying by the drop factor and dividing by 60 minutes per hour.

Flashcard 25: What is the conversion between milliliters and tablespoons?

Answer: $1\ \text{tbsp} = 15\ \text{mL}$. Indicates the standard conversion for tablespoon measurements in oral liquid dosing.