I'm writing a care plan for a patient with diabetes who just had a leg amputation. Since patients with diabetes drink and urinate frequently?

You should have a place for input and output .

Diabetics usually are given IV fluids prior to amputation as they are more fragile than the average orthopedic surgery patient. I would focus on these areas post op: A1C control, tissue perfusion (check to make sure residual limb is warm and pulses are good), pain management ( both post op and phantom limb pain),wound care needs, medicaton need changes. nutritional needs, prevention of infection, changes in mobility, safe mobility, changes in body image. To be extra thorough I would include: prevention of contracture, willingness to participate in therapy, residual limb care and preparaton for prosthesis. Make sure you include all rationales in detail. Avoid using the word, "stump". It is improper. Always use and say, "residual limb".

a treated diabetic doesnt pee alot, so you base the urine output on the fluids in--I/O

Frequent urination is a symptom of diabetes. So it’s not a killer piece of information it’s a normal symptom.