Nurse Sophia walked me around with large heart and O2 sat monitor. I said I wanted to walk more and wanted to use bathroom facility. She went and got smaller monitor that can be carried in hospital gown. The ICU does not use these monitors because the large one does more and most patients don't walk long distances or frequently after surgery. Nobody used these smaller monitors and she took time to figure out how they work. While they had issues getting the monitor on the system, she made sure this was accomplished.