Though so far nobody has asked any specific SAQ style questions regarding sustained low-efficiency dialysis (SLED), it will eventually happen. When it does, it may be something like "Critically evaluate SLED as a modality of renal replacement therapy in the ICU". Question 19 from the second paper of 2008 certainly asks something like that, in the context of a comparison between SLED, IHD and CVVHF.
Those who cannot afford, or are unable to physically lift Critical Care Nephrology can find very helpful information in an older article by Mark Marshall et al (2001), or a more recent 2007 review by Tolwani et al.
Its neither IHD or CRRT; its a "hybrid" therapy.
From basic principles, one can establish that
Furthemore, a good pro-SLEDD review has reported several advantages of SLED over CRRT:
Marshall, Mark R., et al. "Sustained low-efficiency daily diafiltration (SLEDD-f) for critically ill patients requiring renal replacement therapy: towards an adequate therapy." Nephrology Dialysis Transplantation 19.4 (2004): 877-884.
Mark R. Marshall and Thomas A. Golper "Hybrid Dialysis Techniques in the Intensive Care Unit" p.1282 in: Critical Care Nephrology (2009)
Berbece, A. N., and R. M. A. Richardson. "Sustained low-efficiency dialysis in the ICU: cost, anticoagulation, and solute removal." Kidney international 70.5 (2006): 963-968.
Tolwani, A., T. Wheeler, and K. Wille. "Sustained low-efficiency dialysis." Acute Kidney Injury (2007): 320-324.
Schiffl, Helmut. "No added mortality benefit from current approaches to renal replacement therapy in ICU patients." EMJ 1 (2014): 61-66.
Van Berendoncks, An M., Monique M. Elseviers, and Robert L. Lins. "Outcome of acute kidney injury with different treatment options: long-term follow-up."Clinical Journal of the American Society of Nephrology 5.10 (2010): 1755-1762.