CDN Dialysis Adequacy and Prescription 3

Question 1

How is residual renal function (RRF) factored into the overall dialysis adequacy assessment?

Accepted Answer

RRF contributes to total weekly clearance and may allow reduced treatment frequency

Answer

RRF is ignored once dialysis starts

Answer

RRF increases the required Kt/V target

Answer

RRF only matters in peritoneal dialysis patients

Question 2

What does the term 'dry weight' mean in the context of hemodialysis?

Accepted Answer

Lowest tolerated post-dialysis weight without hypotension or symptoms

Answer

Weight after 12-hour fast

Answer

Ideal body weight based on BMI

Answer

Pre-dialysis weight minus estimated fluid in lungs

Question 3

Which patient symptom suggests the dry weight target needs to be increased?

Accepted Answer

Persistent hypotension and cramping during dialysis

Answer

Peripheral edema between treatments

Answer

Dyspnea at rest between treatments

Answer

Hypertension before dialysis

Question 4

Which type of dialyzer membrane is associated with the highest biocompatibility?

Accepted Answer

Synthetic polymer (polysulfone)

Answer

Cellulose (cuprophan)

Answer

Modified cellulose (hemophan)

Answer

Regenerated cellulose

Question 5

What is the purpose of measuring post-dialysis BUN 30–60 seconds after stopping the blood pump (slow-flow sample)?

Accepted Answer

To allow cardiopulmonary recirculation to equilibrate for accurate Kt/V calculation

Answer

To measure protein catabolic rate

Answer

To assess residual renal function

Answer

To calculate ultrafiltration efficiency

Question 6

A dialysis patient consistently achieves Kt/V of 1.0 despite correct treatment prescription. What is the most likely cause?

Accepted Answer

Access recirculation reducing effective clearance

Answer

High protein intake increasing urea generation

Answer

Low phosphorus levels

Answer

Excessive fluid removal