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A randomized controlled trial comparing intermittent with continuous dialysis in patients with ARF
Joshua J Augustine1, Diane Sandy, Tracy H Seifert
1Department of Nephrology and Hypertension, Case Western University Hospitals, Cleveland, OH 44106, USA. joshua.augustine@uhhs.com
Summary
Continuous venovenous hemodialysis (CVVHD) offers better fluid management than intermittent hemodialysis (IHD) for acute renal failure (ARF) patients. However, CVVHD did not improve survival or renal recovery compared to IHD.
Area of Science:
- Nephrology
- Critical Care Medicine
- Renal Replacement Therapy
Background:
- Continuous renal replacement therapy (CRRT) is common in critically ill patients with acute renal failure (ARF).
- Limited data exist comparing CRRT modalities like continuous venovenous hemodialysis (CVVHD) with conventional intermittent hemodialysis (IHD).
Purpose of the Study:
- To compare survival rates between CVVHD and IHD in critically ill ARF patients.
- To analyze differences in renal recovery and fluid balance between the two dialysis modalities.
Main Methods:
- Eighty critically ill patients with ARF requiring dialysis were randomized.
- Patients were stratified by illness severity and assigned to either CVVHD or IHD.
Main Results:
- No significant differences in survival or renal recovery were observed between CVVHD and IHD groups.
- CVVHD showed greater net volume removal over 72 hours, but urine output changes were similar.
- A retrospective analysis indicated a decrease in mean arterial pressure with IHD, but this did not impact survival.
Conclusions:
- CVVHD did not demonstrate improved survival, urine output, or renal recovery compared to IHD in ARF patients.
- Despite enhanced volume control, CVVHD offers no clear advantage over IHD for critically ill ARF patients regarding key outcomes.