Abstract
The ventilation strategies of cardiopulmonary resuscitation (CPR) in patients out-of-hospital cardiac arrest (OHCA) is very important and has received more attention. In the past 10 years, many researches have focused on how to adjust the ratio and time of compression ventilation, minimize the frequency and times of chest compression interruption, and improve the success rate of restoration of spontaneous circulation (ROSC). The ventilation strategies that no ventilation and hyperventilation in the process of CPR are not supported by recent researches for their drawbacks and controversies, but passive ventilation (delayed ventilation) is strongly supported by a great deal of researches. There is debate about whether the use of advanced airway is recommended during the CPR process. How to define the best tidal volume, respiratory rate and fraction of inspired oxygen in CPR to ensure the best ratio of ventilation and blood flow will be the focus and difficulty of investigating ventilation strategies during CPR in further study.
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