A physician ordered 1/4 strength Isomil 12 oz via nasogastric tube over 6 hours. How much solvent (water) will be needed?

Given: Ordered volume of Isomil: 12 oz Step 1: Determine the volume of Isomil needed for 1/4 strength: Volume of Isomil for 1/4 strength = Original volume x (1/4) Volume of Isomil for 1/4 strength = 12 oz x (1/4) Volume of Isomil for 1/4 strength = 3 oz Step 2: Calculate the volume of solvent (water) needed: Solvent volume = Original volume - Volume of Isomil for 1/4 strength Solvent volume = 12 oz - 3 oz Solvent volume = 9 oz Step 3: Convert ounces to milliliters: 1 oz = 29.5735 mL Solvent volume (mL) = 9 oz x 29.5735 mL/oz Solvent volume (mL) = 266.1615 mL Step 4: Round to the nearest whole number: Solvent volume (mL) ≈ 270 mL