Basic dosage calculation setups: desired-over-have, weight-based dosing, and IV drip rate formulas explained step by step.
33 cards · basic cards · AI-written, checked twice. Edit anything.
- In the D/H x Q dosage formula, what does D stand for?
- Desired dose (the dose ordered by the provider)
- In the D/H x Q dosage formula, what does H stand for?
- Dose on hand (the strength or concentration available)
- In the D/H x Q dosage formula, what does Q stand for?
- Quantity, the volume or form the dose on hand comes in
- The basic dosage calculation formula is ____.
- D/H x Q
- Order: 500 mg. On hand: 250 mg tablets. How many tablets are given?
- 2 tablets
- Order: 750 mg. On hand: 250 mg per 5 mL. How many mL are given?
- 15 mL
- Why must D and H be in the same unit of measurement before calculating a dose?
- Mismatched units produce an incorrect dose because the formula assumes both values share one unit
- What is weight-based dosing?
- Calculating a medication dose using the patient's body weight, usually expressed as mg/kg
- One kilogram equals how many pounds?
- 2.2 pounds
- A patient weighs 154 lb. What is the weight in kilograms?
- 70 kg
- Order: 5 mg/kg/day. Patient weighs 60 kg. What is the total daily dose?
- 300 mg
- A total daily dose of 300 mg is split into 3 equal doses. What is each dose?
- 100 mg
- What formula converts a total daily weight-based dose into a single dose amount?
- Total daily dose divided by the number of doses per day
- In IV drip calculations, the drop factor is measured in ____.
- drops per milliliter (gtt/mL)
- What is the typical drop factor range for a macrodrip IV tubing set?
- 10 to 20 gtt/mL