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Updated: Sep 28, 2025

Murine Model of Controlled Cortical Impact for the Induction of Traumatic Brain Injury

Murine Model of Controlled Cortical Impact for the Induction of Traumatic Brain Injury

Published on: August 16, 2019

Blunt Trauma Mortality: Does Trauma Center Level Matter?

Vishes V Mehta¹, Areg Grigorian¹, Jeffry T Nahmias¹

¹Division of Trauma, Burns and Surgical Critical Care, Department of Surgery, University of California, Irvine, Orange County, California.

The Journal of Surgical Research

|March 27, 2022

Summary

Blunt trauma patients treated at Level I and Level II trauma centers have similar mortality rates overall. However, Level I centers show reduced mortality for motor vehicle accidents and bicycle accidents.

Keywords:

Blunt trauma Falls Motor vehicle crash Trauma Quality Improvement Project

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Area of Science:

Trauma Surgery
Public Health
Emergency Medicine

Background:

Trauma centers significantly impact patient outcomes.
Previous studies show conflicting survival rates between American College of Surgeons' Level I and Level II trauma centers for blunt trauma patients.
A granular analysis of blunt trauma mechanisms is needed to clarify center-specific outcomes.

Purpose of the Study:

To compare mortality rates between Level I and Level II trauma centers for blunt trauma patients.
To determine if specific blunt trauma mechanisms influence mortality differences between trauma center levels.

Main Methods:

Utilized the Trauma Quality Improvement Program (2010-2016) database.
Included patients with blunt trauma treated at Level I or Level II trauma centers.
Performed multivariable logistic regression, controlling for comorbidities and injury severity.

Main Results:

Analyzed 734,473 blunt trauma patients; 69.1% treated at Level I, 30.9% at Level II centers.
No overall significant difference in mortality between Level I and Level II centers after covariate adjustment.
Level I centers demonstrated decreased mortality for motor vehicle accidents (MVA) and bicycle accidents, but not for falls or pedestrians struck.

Conclusions:

Overall mortality for blunt trauma is comparable between Level I and Level II trauma centers.
Specific mechanisms, such as MVAs and bicycle accidents, are associated with lower mortality at Level I centers.
Further research into practice variations at different trauma center levels is warranted.