Medication Dosage Calculations - NCLEX-RN

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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