There is a death risk that increases with the required time to transport a critical patient to a hospital by ambulance. Effectiveness of medical attention and therefore patient's safety will strongly depend on the quickness to determine appropriate actions to be performed when patient arrives to the hospital. It is evident the need of establishing a communication link between monitoring equipment inside the ambulance and the healthcare center. This paper presents a system that automatically integrates, organizes, records and wirelessly transmits patient's vital signs in real-time. Physicians and specialists could use this information to make a pre-diagnosis of patient's current condition, anticipate possible complications and medical treatment planning before his arrival to the care center.