This is what I noticed during my Trauma audition rotation:
The intern, like dpmd pointed out above, functioned primarily to assist the Trauma resident, who was either a PGY-III or the Chief on Trauma. Where I rotated, the Trauma intern was also the SICU/Trauma ICU intern, and they were "confined" to the ICU's (depending on which attending was on call) and only reported to the Trauma bay when called upon by the resident for assistance.
When they did come help out in the Trauma bay, it was usually to scribe while the resident did the surveys. The procedures they got to do, as expected, included chest tubes, FAST scans, central lines, and, of course, suturing. The only time the intern ran the trauma was when there were multiple cases, and even in that situation, the intern always got the less serious cases. Nonetheless, they were responsible for their own H&Ps.
The Trauma intern that was rotating through, i.e. FP or IM intern, was usually given the scutwork which included all the usual floor management issues and doing discharges.
These non-surgical interns rounded with the other residents every morning and were usually assigned the Trauma patients that were admitted to Med/Surg while the Chief and seniors rounded on the ICU patients. The surgical interns, which included the prelims, rounded in the Trauma ICU.
Also, the M&M's were always presented by the seniors or Chief, never the intern.
If I were prepping for a Trauma rotation, things I'd brush up on would include:
-Components of primary and secondary surveys
-How to quickly calculate the GCS
-Reading CXRs
-Indications for thoracotomy
-Indications for DPL vs. ex lap
-Grading system for liver/splenic lacs
-Trauma neck zones
-Knowing the extensions for ortho/plastics/OMFS/neurosurg/urology
