Technique for Ultrasound During Endotracheal Intubation

We already know that ultrasound can be used to help with endotracheal intubation. The idea is that you can visualize the trachea and esophagus while someone is attempting to place the endotracheal tube - and see which one lights up with the air-filled balloon. Since some people are actually doing this now, it might be important to figure out the best way to perform this ultrasound exam. Where do you put the transducer? Do you add pressure? How long does this take? Some of these answers are obvious, but this study takes a look to figure out where you can get the most bang for your airway ultrasound buck.