Final answer:
The nurse would recommend a protein intake of 67-84 grams per day for a teen on a ketogenic diet who weighs 185 pounds.
Step-by-step explanation:
When planning a ketogenic diet for a teen who weighs 185 pounds, the nurse would typically recommend a protein intake of 0.8-1 gram per kilogram of body weight. To convert pounds to kilograms, divide the weight in pounds by 2.2. In this case, the weight is approximately 83.86 kilograms (185 pounds divided by 2.2), so the recommended protein intake would be around 67-84 grams per day.