上海大学-Whichofthefollowingstatementsregardinghepatorenalsyndrome(HRS)isTRUE?

['Perioperativerenalfailuredoesnotchangetheoutcomeoflivertransplantation.', 'FiftypercentofpatientswithadvancedcirrhosisandascitesdevelopHRS.', 'HRSischaracterizedbyintensevasoconstrictionofrenalcirculation,lowglomerularfiltration,preservedrenaltubularfunction,andnormalrenalhistology.', 'PatientsshowingimprovementinrenalfunctionaftervasoconstrictortherapyforHRSdonotsurviveanylongerthanpatientswhodonotrespondtotherapy.']