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Small Hemothoraces Not Drained on Admission: Initial Volume Predicts Need for Intervention.

HeeYun Na1, Esther J Kim2, Alison Muller2

  • 1Drexel University College of Medicine, Wyomissing, PA, USA.

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For small hemothoraces (HTX) after blunt trauma, initial observation may be appropriate. However, a higher number of rib fractures and larger initial HTX volume predict the need for later intervention.

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Area of Science:

  • Trauma Surgery
  • Thoracic Surgery
  • Emergency Medicine

Background:

  • Small hemothoraces (HTX) following blunt trauma are often managed non-operatively.
  • Predictors for delayed intervention in initially observed small HTX require further investigation.

Purpose of the Study:

  • To identify risk factors predicting the need for intervention in patients with small hemothorax (HTX) initially managed non-operatively after blunt trauma.

Main Methods:

  • Retrospective review of patients with blunt traumatic HTX (2016-2022).
  • Inclusion criteria: small HTX (<400 mL on CT) initially observed for >48 hours.
  • Primary outcome: HTX-related intervention within 6 months; statistical analyses performed.

Main Results:

  • 188 patients met criteria; 127 were initially observed, with 24% requiring intervention.
  • Intervention group had larger initial HTX volume (129 mL vs 68 mL) and more rib fractures (7 vs 4).
  • Number of rib fractures and HTX volume independently predicted the need for delayed intervention.

Conclusions:

  • Initial HTX volume and number of rib fractures are significant predictors for delayed intervention in small HTX managed non-operatively.
  • These factors can guide clinical decision-making for observation versus immediate intervention.