I was drinking beers with my friend Oren Friedman, a medical intensivist with an interest in hypothermia; we got to talking about how it can be a PitA to pass the esophageal temperature probe for hypothermia. I had recorded some footage for our hypothermia video a while back on how to get er done.

Here is the reference mentioned:

Appukutty J, Shroff PP. Anesth Analg. 2009 Sep;109(3):832-5. Nasogastric tube insertion using different techniques in anesthetized patients: a prospective, randomized study.

Update: This new article adds a bougie to get the tube down the esophagus

Endotracheal tube-assisted orogastric tube insertion in intubated patients in an emergency department Oh. Sung Kwon, M.D.