Abstract
First-aid stations were divided randomly into 4 groups. Advanced airway for sudden cardiac arrest patients with laryngeal mask airway (LMA) was established in groups A and C while trachea cannula was inserted on spot of emergency medical service (EMS) or in ambulance in groups B and D. According to the results, the success rate of insertion and cardiopulmonary resuscitation (CPR) of groups A and C were higher than the other two groups (P<0.05). However, the required time was shorter (P<0.05). Due to a difficult catheterization environment, LMA is more effective and convenient than trachea cannula in EMS. Key words: emergency medical service; laryngeal mask airway
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