Hi.. The history is in the favour of urinary tract infection with renal failure with pulmonary oedema.. This in simple terms means urine infection that has affected the kidney reducing its functions which has inturn caused fluid accumulation in the lungs.. The present treatment of ventilatory support, antibiotics (those that does not hamper with the kidney functions may have to be used), medications to remove the fluids from the lungs and dialysis to improve kidney functions are essential.. Occasionally the kidney functions may improve with the present mode of treatment and he can continue with the catheter. However there are possibilities that it may not improve and would need continuos dialysis.. This message is only for information purpose depending on the history that you have given and not entirely how this is going to be.. You can talk and discuss with the doctors treating him to provide the exact answers on your queries..