- For large hepatectomy, additional criteria are required: Sufficient residual liver volume: Remaining liver volume-to-body mass index (RLVBWR) > 0.8% or minimal residual liver volume-to-normal volume (RLVSLV) for complete liver Total normal is 20 - 30%, for patients with cirrhosis or hepatitis, the minimum RLVSLV must reach about 40%.