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Flashcards covering key points about evaluating sharp force injuries, specifically stab wounds, based on the provided lecture notes.
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How do stab wounds typically result?
Stab wounds result from variably sharp or pointed objects forced inward by a thrust, movement, or fall.
What is a key dimensional characteristic of stab wounds?
In stab wounds, depth exceeds width.
What are the primary dangers associated with stab wounds?
Danger to vital internal structures and a risk of delayed incapacitation, such as cardiac tamponade or tension pneumothorax.
What is cardiac tamponade?
Blood in the sac surrounding the heart.
What is tension pneumothorax?
Air trapping between a lung and the chest wall.
How might blood appearance in stab wounds confuse untrained individuals?
Stab wounds may begin with internal bleeding, with blood appearing later when the victim "overflows" or collapses.
What can stab wounds often reveal about the causative instrument?
Stab wounds may reflect the causative instrument's characteristics, such as whether it was single-edged, double-edged, square, or round.
When would significant abrasion typically be observed around stab wound margins?
Relatively little abrasion occurs unless the weapon is tapering and wedges or stretches the skin upon entry.
What should be done if fragments of a penetrating object are found in a stab wound?
Remnants should be recovered, retained, and handled as potential evidence whenever practicable.