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Characterization of fatal blunt injuries using postmortem computed tomography.

Jeremy H Levin1, Anthony Pecoraro, Victoria Ochs

  • 1From the Division of Acute Care Surgery, Department of Surgery (J.H.L., A.M., P.M.H.), Department of Surgery (A.P.), Indiana University School of Medicine, Indiana University School of Medicine (V.O.), and Division of Emergency Radiology, Department of Radiology and Imaging Sciences (S.D.S.), Indiana University School of Medicine, Indianapolis, Indiana.

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Postmortem CT (PMCT) can aid in blunt trauma resuscitation by identifying fatal injuries like brain or spine trauma. Injury patterns are similar whether arrest occurs before or after hospital arrival.

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Area of Science:

  • Emergency Medicine
  • Radiology
  • Forensic Pathology

Background:

  • Autopsies are infrequent and slow for blunt trauma patients, limiting their use in resuscitation.
  • Postmortem computed tomography (PMCT) offers a potential adjunct to autopsy for guiding resuscitation efforts.

Purpose of the Study:

  • To evaluate the utility of PMCT in identifying mortal and potentially mortal injuries in blunt trauma decedents.
  • To compare injury patterns between patients who experienced arrest prehospital versus in-hospital.

Main Methods:

  • Retrospective review of 80 blunt trauma decedents within 1 hour of arrival.
  • Analysis of noncontrasted PMCT scans to identify specific injury types.
  • Comparison of injury patterns based on arrest timing (prehospital vs. in-hospital).

Main Results:

  • Traumatic brain injury (40%), long bone fractures (25%), and cervical spine injury (25%) were common mortal injuries.
  • Pneumothorax occurred in 18.8% of cases; esophageal intubation in 5%.
  • No significant differences in injury patterns were found between prehospital and in-hospital arrest groups.

Conclusions:

  • Fatal blunt injury patterns are consistent regardless of arrest timing.
  • Mandatory chest decompression and airway confirmation are recommended for blunt arrest patients due to high rates of pneumothorax and intubation errors.