A palpable bladder is a sign of urinary retention. If condition permits, perhaps standing or sitting may facilitate voiding. Diuretics will worsen prerenal azotemia. If mechanical obstruction, such as enlarged prostate, consider intermittent catheterization. If the patient already has a Foley catheter, irrigate it to assess for obstruction.
Early ambulation is important.
Options for DVT prophylaxis. Start postoperatively within 24 hours and continue until patient is ambulatory. It is approved for this indication in the United States. It also may be cost effective because no need to monitor PTT and reduced incidence of bleeding compared to other prophylactic measures. Can also be used for DVT prophylaxis after other surgery, such as abdominal surgery.