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Soft Tissue Trauma | Hemorrhage

Hemorrhage: external or internal break in the vascular system. Adult can lose about 500 mL without harm while loss of 300 mL may kill and infant.

  • External: soft tissue injury
    • Arterial blood: bright red, spurts with pulse, least frequent, most serious
    • Venous blood: dark red, flows slow and steady, typically deeper cuts
    • Capillary: medium red, oozes slowly

Assessment: visible blood loss is not a good way to judge the severity of an injury

Body’s response to bleeding:

  • Local vasoconstriction
  • Form a platelet plug
  • Coagulation
  • Growth of fibrous tissue

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