The client who is obese is participating in an investigational study using metformin (Glucophage), a biguanide antidiabetic medication, for weight loss. Which data should the nurse monitor? 1. The...

The client who is obese is participating in an investigational study using metformin (Glucophage), a biguanide antidiabetic medication, for weight loss. Which data should the nurse monitor?

1. The hemoglobin A1C every 2 months.

2. Daily fasting glucose levels.

3. The urine ketones every 2 weeks.

4. The client’s weight every month.