An Outcome Analysis of Nurse Practitioners in Acute Care Trauma Services.

This was a single-center retrospective before-after study, so it describes changes over time rather than proving the nurse practitioner service caused them. The service change was a bundle: more nurse practitioners, everyday coverage, daily ICU rounds, management of stable noncritical trauma, a follow-up clinic, resident support, and attending rounds; the paper cannot separate the contribution of any one component. Outcomes came from registry documentation, so missing or inaccurate records could bias results. Patient mix changed over the periods, including injury severity and comorbidities, which may have influenced length of stay and complications.

The authors reported no conflicts of interest, and the named authors with financial disclosures reported none.

Do not conclude that adding nurse practitioners alone caused the shorter stays or fewer complications. The institution changed several parts of trauma care at once, and the study was retrospective, so it cannot establish causation.