67 year old African American male with history of diabetes, hypertension, and advanced chronic kidney disease has been initiated on dialysis in the hospital. He has received 6 treatments so far and has done well without significant issues with hypotension or cramping. He will now be transitioning to your outpatient dialysis unit. The patient weighs 70kg and has a well functioning AV fistula. **How would you calculate the initial dialysis prescription based on goal spKt/V?**

**STEP 1: **Based on clinical practice guidelines, figure out your goal prescribed spKt/V.

This is NOT the correct goal spKt/V. Try another choice.

Correct! This should be your goal prescribed spKt/V.

**STEP 2: ** Calculate your V

This is NOT the correct calculation for V. Try another choice.

Correct! This is the best calculation for V. Move on to STEP 3.

**STEP 3: **Review your known variables for Kt/V:

Kt/42,000 = 1.4

**STEP 4: **Calculate Kt = 1.4 x 42,000 = 58,800ml

**STEP 5: **Assume K is known and is 250ml/min (based on choice of dialyzer (KoA)) and Qb is 400ml/min to calculate t
t(treatment duration) = 58,800ml / 250 ml/min = 235 minutes or 3.9 hours