MCQ – 65915

Correct Answer � B Explanation

Ans:B.)Hollow Viscus.

The injury shown in the picture above represents the blast injury.

Hollow viscus organs are mostly involved in blast injury as there is barotrauma to air filled hollow organs.

Blast injury

• It is a complex type of physical trauma resulting from direct or indirect exposure to an explosion.
• Categorized as primary to quaternary.
• Primary injuries
  • They are caused by blast overpressure waves.
  • The ears are most often affected by the overpressure, followed by the lungs and the hollow organs of the gastrointestinal tract.
  • Pulmonary barotrauma, the most common fatal PBI, may include the following:
    • Pulmonary contusion
    • Systemic air embolism, which most commonly occlude blood vessels in the brain or spinal cord
    • Free radical–associated injuries such as thrombosis, lipoxygenation, and DIC
    • ARDS may be a result of direct lung injury or of shock from other body injuries
  • Acoustic barotrauma consists of the following:
    • Tympanic membrane rupture (most common)
    • Hemotympanum without perforation
    • Ossicle fracture or dislocation may occur with very high-energy explosions.
  • GI tract:Perforation is common in stomach, small intestines & caecum
  • Eyes:Conjuctival hemorrhage.

• Secondary injuries
  • They are caused by fragmentation and other objects propelled by the explosion.
  • These injuries may affect any part of the body and sometimes result in penetrating trauma with visible bleeding.
• Tertiary injuries
  • Displacement of air by the explosion creates a blast wind that can throw victims against solid objects.
  • They may present as some combination of blunt and penetrating trauma, including bone fractures and coup contre-coup injuries.
• Quaternary injuries
  • They are all other injuries not included in the first three classes. These include flash burns, crush injuries, etc