Emergency medicine updates: Cardiac arrest airway management.

INTRODUCTION

Cardiac arrest is the loss of systemic circulation. The approach to airway management is an important component of the resuscitation of patients in cardiac arrest.

OBJECTIVE

This paper evaluates key evidence-based updates concerning airway management in cardiac arrest.

DISCUSSION

Management of cardiac arrest focuses on cardiopulmonary resuscitation (CPR), including high-quality chest compressions and ventilation. Resuscitation should prioritize circulation with high-quality compressions, but as the resuscitation continues, airway management is necessary to provide ventilation. During initial CPR efforts, a compression to ventilation ratio of 30:2 is recommended. Bag-valve-mask (BVM) ventilation is an effective means of ventilation during CPR efforts, though providers should ensure appropriate mask seal with a two-person BVM strategy (one person holding the mask and one person ventilating) if possible. Breaths should be provided over less than 1 s with enough tidal volume to cause chest rise. Advanced airways include a supraglottic airway (SGA) or endotracheal tube via endotracheal intubation (ETI). If an advanced airway is present, one asynchronous ventilation should be provided every 8-10 s. An advanced airway may be considered with an asphyxial cause of arrest, those with prolonged arrest or transport, and cases managed with limited numbers of experienced personnel, though compressions must not be interrupted for placement of an advanced airway. An SGA is a viable option for an advanced airway. In settings with high ETI success rate, ETI may be performed, but in other settings SGA is recommended. If performing ETI, video laryngoscopy is associated with an improved view of the glottis and higher first pass success compared to direct laryngoscopy. Cricoid pressure is not recommended. Confirmation of ETI is necessary. Following ETI and return of spontaneous circulation, a lung protective strategy of ventilation is recommended while avoiding hypoxia.

CONCLUSIONS

An understanding of literature updates regarding airway management can improve the ED care of patients in cardiac arrest.