The nurse knows that continuous renal replacement therapy (CRRT) differs from conventional intermittent hemodialysis in what way?
Explanation & Rationale
Rationale: A. It provides faster removal of solute and water is incorrect because CRRT is slower and continuous, not rapid like intermittent hemodialysis. Rapid removal of solutes and fluid can cause hemodynamic instability, which CRRT avoids by providing gradual clearance. B. The process removes solutes and water slowly is correct because CRRT is a continuous therapy (24 hours/day) designed for hemodynamically unstable patients. By slowly removing fluid and solutes, it minimizes the risk of hypotension, electrolyte shifts, and other complications associated with intermittent hemodialysis. C. A hemofilter is used to facilitate ultrafiltration is partially correct, as CRRT does use a hemofilter, but this is not the primary differentiating factor from conventional hemodialysis, which also uses a dialyzer for solute removal. The key difference is the rate and continuity of solute and fluid removal. D. It does not allow diffusion to occur is incorrect because CRRT allows both diffusion and convection, depending on the mode used (CVVH, CVVHD, or CVVHDF). Diffusion is essential for solute clearance in CRRT, just as it is in intermittent hemodialysis.