Sustained low-efficiency dialysis in septic shock: Hemodynamic tolerability and efficacy

Area of Science:

• Nephrology
• Critical Care Medicine
• Intensive Care Unit (ICU) Management

Background:

• Acute kidney injury (AKI) in septic shock is associated with poor patient outcomes.
• Sustained low-efficiency dialysis (SLED) is increasingly adopted in ICUs, often replacing continuous renal replacement therapy.
• Limited data exists on the hemodynamic tolerability and efficacy of SLED specifically in septic shock AKI patients.

Purpose of the Study:

• To evaluate the hemodynamic tolerability and efficacy of SLED in adult ICU patients with septic shock and AKI.
• To identify key indicators for assessing SLED's performance in this critically ill population.

Main Methods:

• The study included 124 adult ICU patients with septic shock and AKI requiring SLED.
• Hemodynamic tolerability was assessed using the modified vasopressor index (VI) and vasopressor dependency (VD).
• Efficacy was evaluated by Kt/v, correction of acidosis, electrolyte balance, and fluid overload management.

Main Results:

• Metabolic acidosis was the primary reason for initiating SLED in 49% of patients.
• Non-survivors (74/124) exhibited significantly higher VI and VD before and during SLED compared to survivors.
• Effective hemodynamic tolerability and efficacy of SLED were observed primarily at lower vasopressor doses.

Conclusions:

• The combination of VI, VD, Kt/v, and correction of metabolic acidosis, electrolytes, and fluid overload can characterize SLED's hemodynamic tolerability and efficacy in septic shock AKI.
• Further research is needed to establish the hemodynamic tolerability and efficacy of SLED in septic shock AKI patients requiring higher vasopressor doses.