ATI TEAS (Test of Essential Academic Skills) Version 7MathematicsMedium
A patient's medication dose is calculated based on their body weight. If a patient weighs 165 lbs and the medication dosage is 2 mg/kg, how many milligrams (mg) of medication should be administered? (Round to the nearest whole number)
- A150 mg
- B145 mg
- C160 mg
- D155 mg
Show answer & explanationAnswer & explanation
Correct answer: A. 150 mg
First, convert the patient's weight from pounds to kilograms: 165 lbs / 2.2 lbs/kg = 75 kg. Then, multiply the weight in kg by the dosage per kg: 75 kg * 2 mg/kg = 150 mg. Rounding to the nearest whole number, the dose is 150 mg.
Why the other options are wrong
- B. Incorrect; results from an error in conversion or multiplication.
- C. Incorrect; suggests an error in the initial conversion or the final multiplication.
- D. Incorrect; likely a miscalculation or incorrect conversion factor.
Weight-Based Dosage Calculation
Calculating medication dosage based on a patient's body weight, often requiring unit conversion.
- Requires converting pounds (lbs) to kilograms (kg) (1 kg ≈ 2.2 lbs).
- Dosage is typically given in mg/kg.
- Accuracy is critical for patient safety.
Memory trick: Pounds to Kilos First, then Dose per Kilo, so you don't burst!