Condition	Physical examination characteristics
Tension gastrothorax	Bowel sounds over the chest, hyperresonance to percussion
Hemopneumothorax	Percussion “dullness” over fluid, hyperresonance over air
Pleural empyema	Percussion “dullness” over fluid
Simple pneumothorax	Hyperresonance
Tension pneumothorax	Hyperresonance, vital sign instability, tracheal shift, jugular venous distension