Comparison of Efficiency Between I-gel Blind Intubation and I-gel Bronchoscopic Intubation During Resuscitation

The investigators will compare conventional intubation using Macintosh laryngoscope, blind endotracheal intubation using i-gel for conduit and bronchoscopic intubation using Ambu-aScope and i-gel. All situation assumed as cardiac arrest. i.e, someone give chest compressions continuously without interruption.

Moreover the investigators will compare the type of endotracheal tube. Reinforced tube has more soft tube tip, so the investigators think it is more acceptable for intubation using i-gel as conduit.