Dialysis Adequacy and Prescription Flashcards
6 cards from real CHT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
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What is the recommended minimum treatment time for a thrice-weekly hemodialysis session?
Answer: 3 hours
KDOQI guidelines recommend a minimum of 3 hours per session for thrice-weekly hemodialysis for most patients.
Nocturnal hemodialysis (6–8 hours, 3–6 nights per week) compared to standard hemodialysis offers which primary benefit?
Answer: Better clearance of middle molecules and improved phosphate control
Longer nocturnal sessions significantly improve middle molecule clearance and phosphate removal, reducing need for phosphate binders.
What is the purpose of sodium modeling during hemodialysis?
Answer: Use variable dialysate sodium to improve hemodynamic stability and reduce cramps
Sodium modeling uses a higher dialysate sodium at the start and gradually decreases it, helping stabilize blood pressure and reduce muscle cramps.
What does a consistently falling pre-dialysis BUN suggest about a patient's dialysis prescription or status?
Answer: The patient may have decreased protein intake or increased residual renal function
Falling pre-dialysis BUN may indicate reduced dietary protein intake (malnutrition) or improved residual renal function, both warranting clinical evaluation.
Which method is used to estimate the weekly standard Kt/V (stdKt/V) for comparing different dialysis schedules?
Answer: Leypoldt/Depner calculation
The Leypoldt/Depner calculation of standard Kt/V allows comparison of different dialysis schedules (e.g., daily vs. thrice-weekly) by expressing weekly urea clearance in comparable terms.
Residual kidney function (RKF) in a dialysis patient contributes to overall solute clearance. How is it typically measured?
Answer: By 24-hour urine collection for urea and creatinine clearance
Residual kidney function is quantified by collecting a 24-hour urine sample to measure urinary urea and creatinine clearance between dialysis sessions.