Exploration of Early Warning System of Cardiac Arrest and Early Intervention

The high incidence rate, high Case fatality rate rate and high rate of neurological impairment of cardiac arrest pose a serious threat to the health of the whole population, and also bring a huge economic burden. In recent years, the "American Heart Association AHA Cardiopulmonary resuscitation and Cardiovascular Emergency Guide" has always emphasized the importance of "life chain" for the survival of patients with cardiac arrest. The hospital's survival chain emphasizes early warning recognition and activation of emergency response systems, immediate high-quality CPR, rapid defibrillation, advanced life support, and post arrest care. However, there is an urgent need for improvement and enhancement in all aspects of the chain of life for cardiac arrest. Millimeter wave radar can transmit radar signals that penetrate non-metallic substances such as clothing, detect the micro motion signals caused by human respiration and heartbeat, and then process the signals. By calculating the frequency or phase shift information in the radar echo, patient activity information can be obtained, achieving contactless and real-time detection of patient activity in the room. And it can achieve tracking of targets in scenarios where multiple people exist, while monitoring the physical signs of each target in real-time \[7\]; Our team has developed Cardiopulmonary resuscitation Quality Monitoring Index (CQI) and Cardiopulmonary resuscitation Ventilation Mode (CPRV) in the early stage, which are very helpful to monitor and improve the quality of Cardiopulmonary resuscitation; In recent years, the application of bedside echocardiography (PoCUS) in emergency has been significantly expanded. Although transthoracic echocardiography (TTE) can provide valuable diagnostic information for patients with cardiac arrest, it has important limitations in dynamic compression of Cardiopulmonary resuscitation. TEE can overcome many limitations of TTE, and the combination of the two can achieve visualiza