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"The more they practice it on the mannequins, the more they feel comfortable when they have to do it on a real person," said Debra Danforth from Florida State University's College of Medicine.
Students learn how to listen to the heart and identify abnormal beats, and they also perfect their bedside manners.
From the next room, an actor responds to the student.
"We can practice lots of procedures that are sometimes scary and daunting. You know you won't hurt the mannequin, whereas you could really hurt a patient," said medical student Ashley Newell.
The mannequins can be programmed to test the student's skills unexpectedly.
The wrong move could mean disaster, but the right move means a life saved for the students. It's an invaluable tool.
"It's not even just the fear of not knowing what to do. It's also the fear of well how do I get all the instruments together, and how do I look professional in front of the patients," said medical student Juline Machado.
The simulators are preparing the doctors of tomorrow for whatever comes their way.