In a cat with end-stage renal disease receiving epoetin at 100 units/kg, and weighing 5.5 pounds, how many units should be delivered?

In a cat with end-stage renal disease receiving epoetin at 100 units/kg, and weighing 5.5 pounds, how many units should be delivered?

• A. 750
• B. 500
• C. 250
• D. 1000

Answer: (C)

Dosing is based on weight in kilograms, so you convert the animal’s weight from pounds to kilograms and multiply by the dose per kilogram. The cat weighs 5.5 pounds, which is about 2.5 kilograms (5.5 ÷ 2.2046 ≈ 2.5). At 100 units per kilogram, the dose is 100 × 2.5 = 250 units. So 250 units is the correct amount. The other options would imply a heavier weight (for example around 7.5 kg, 5 kg, or 10 kg), which doesn’t match this cat’s actual weight.

Dosing is based on weight in kilograms, so you convert the animal’s weight from pounds to kilograms and multiply by the dose per kilogram. The cat weighs 5.5 pounds, which is about 2.5 kilograms (5.5 ÷ 2.2046 ≈ 2.5). At 100 units per kilogram, the dose is 100 × 2.5 = 250 units. So 250 units is the correct amount. The other options would imply a heavier weight (for example around 7.5 kg, 5 kg, or 10 kg), which doesn’t match this cat’s actual weight.