Over the years they have become more and more advanced to be more human like. The Harvey cardiology mannequin was developed around the same time in 1968. It was capable of simulating 27 different kinds of heart conditions. This device has been testing the most out of any in history for measure of efficiency due to the fact that the heart an important part of the body and the health of a human. The first technological medical mannequins were developed based on the heart because the heart is such an important organ. Nursing students are able to monitor the breath sounds, heart tones, and palpable pulses of the mannequins. The Sim One was then developed during the Vietnam War to help medical students practice trauma. These mannequins were so advanced that they blinked, automatically moved with breathe, and pupils dilated, and even talked to tell the students what was wrong. This was the start of great technology in the field of nursing, however the equipment was