Professional
Technical
IVT
massive hemothorax
Pronunciation: HEE-moh-thor-aks
Accumulation of more than 1500 mL of blood in the pleural cavity, typically requiring immediate surgical intervention.
Full Definition
A life-threatening condition characterized by the rapid accumulation of blood in the pleural space, defined as initial output exceeding 1500 mL or ongoing bleeding of 200 mL per hour for 2-4 hours after chest tube insertion. This condition typically results from injury to major thoracic vessels, heart, or lung parenchyma. Management requires immediate chest tube drainage and often necessitates emergency thoracotomy for source control and repair of bleeding structures.
Usage
Usage note: Distinguish from simple hemothorax by volume criteria in documentation.
In Context
- "Massive hemothorax with initial output of 1800 mL prompted immediate thoracotomy." — Operative report
- "The patient developed massive hemothorax following blunt chest trauma from the motor vehicle crash." — Emergency department record
Contrasted with
simple hemothorax
Don't confuse with
hemothorax
pleural effusion