Accelerated Venovenous Hemofiltration as a Transitional Renal Replacement Therapy in the Intensive Care Unit

Area of Science:

• Nephrology
• Critical Care Medicine
• Renal Replacement Therapy

Background:

• Continuous renal replacement therapy (CRRT) is standard in ICUs, but transition to intermittent hemodialysis (iHD) lacks guidelines.
• Accelerated venovenous hemofiltration (AVVH) uses high rates and short sessions for faster clearance and volume removal.
• AVVH is explored as a bridge between CRRT and iHD for unstable patients.

Purpose of the Study:

• To evaluate Accelerated Venovenous Hemofiltration (AVVH) as a transitional therapy between CRRT and iHD.
• To assess the impact of AVVH on CRRT duration, patient outcomes, and ICU readmission rates.

Main Methods:

• Retrospective cohort study at an academic tertiary care center.
• Analyzed clinical outcomes and technical aspects of AVVH integration into a CRRT program.
• Key outcomes included mortality, ICU length of stay, and readmission rates.

Main Results:

• 97 patients received 298 AVVH treatments with 91% success rate.
• Average treatment: 9.5 hours, 4.2 L/h replacement fluid, 23% urea reduction, 2.4 L net ultrafiltration.
• Inpatient mortality was 32%, mean LOS 54 days; 66% recovered renal function. 11% of transferred patients had ICU readmission due to hypotension on iHD.

Conclusions:

• AVVH shows potential as a transition therapy between CRRT and iHD in the ICU.
• It may decrease CRRT duration, enhance patient mobility, and maintain low ICU readmission rates.
• Further research is needed on resource use and cost implications.