What is the primary cause of internal damage to hollow organs during a blast?

The primary cause of internal damage to hollow organs during a blast is attributed to primary blast effects. This refers to the initial shock wave created by an explosion, which exerts significant pressure on surrounding structures. This rapid expansion of air and the resulting blast wave can cause a violent compressive force on hollow organs, leading to rupture or other forms of internal injury.

Hollow organs, such as the stomach, intestines, and bladder, are particularly vulnerable during this initial phase due to their air or fluid-filled nature. The pressure differential created by the blast can result in the collapse or explosion of these organs from the inside out, causing severe physiological damage. Understanding this mechanism is critical for medics when assessing and managing blast injuries, as immediate recognition and intervention can greatly influence patient outcomes.