Friends, DO NOT leave your loved ones alone in the hospital. Even with the best, most well meaning staff they have other patients and can't jump on every request right away. You can fetch things, monitor equipment and alarms, help with physical & respiratory therapy, and generally make sure things get done when they should.
Set up shifts with relatives and trusted friends if you can't take off work. Sleep in the room at night. With strangers running in and out 24/7 the patient needs somebody familiar to talk to and watch out for their interests. DON'T let them feel alone.