EMT Signs And Symptoms Practice Test

In a chest injury, blood that collects in the pleural space prevents full expansion of the affected lung. The clearest clue you’ll hear on a physical exam is decreased or absent breath sounds on one side, because that lung isn’t ventilating well anymore. That unilateral finding is the strongest indicator of a hemothorax. While signs like respiratory distress, tachycardia, or worsening shock can occur with significant blood loss, they aren’t as specific to a hemothorax as the one-sided reduction in breath sounds. Remember that the presence of dullness to percussion on the affected side can also support the diagnosis, but the key clinical cue is the unilateral decrease or absence of breath sounds. In practice, recognize this pattern after chest trauma, provide oxygen, and expedite transport.