Dressed in surgical gowns, hair nets and face masks, kids at Southern Hills Hospital and Medical Center filed one by one into a room where they were ready to treat their patients: sick teddy bears. With bandages, thermometers and a few of the hospital’s nurses at the ready, the kids got to work checking heartbeats and repairing broken paws to ensure their sick stuffies got the care they needed. The demonstration was one of several that introduced hundreds of kids on Sunday to how hospitals operate and showcased new healthcare technology. The gathering was part of the annual Las Vegas Science and Technology Festival, a series of free events through Saturday intended to spark kids’ curiosity in science-related fields. Nick Johnson, CEO of Southern Hills, said the event helps kids imagine themselves having a career in a hospital.…