|  |  |  | Improvements |  | ||
---|---|---|---|---|---|---|---|
Study | Classification | Number | Controlled | Biochemical | CVS | CNS | Survival |
Rifai et al. [28] | Acute on chronic liver failure | 11 | No | Yes | No | No | 28% at 30 days |
Skwarek et al. [31] | Acute liver failure | 13 | No | Yes | N/A | N/A | 23% at 6 months |
Laleman et al. [12] | Acute on chronic liver failure (ethanol) | 18 | Yes | Yesa | No | N/A | N/A |