how high do serum creatinine levels have to get?

My relative is a 50 year old male who hasn't seen a doctor in over 15 years, so no idea what was happening before now.  7 days ago he was admitted to ICU.  Initial diagnosis was, liver failure, kidney failure and aspiration pneumonia  (he is a chronic alcoholic).  So far, nothing is improving.  They will do bronchoscopy today for the lungs and have left the liver at 'fatty liver" and "enlarged liver".  No additional diagnostics are being done for the liver since, for now, the kidneys and lungs are priority.  His serum creatinine on admission was 8.2.  After 4 days of full dialysis it went to 9.3 and today (after 6 rounds of dialysis) creatinine is 8.9.  He has little urine output less than 10 cc total.  the urine has been a cola color until today, now it appears mostly red.  Obviously the goal with dialysis was to rest the kidneys and hope for some regaining of function, which has not occurred.  How long will they continue to do dialysis with no result?  Does he have to suffer through the rest of his body breaking down (vents, etc.) before they say "hey this isn't working?  He also has ramdomylitis (sp?).  He was passed out approximately 14 hours before anyone knew.   Thanks.