Which statement correctly distinguishes cause of death from mechanism of death?

Which statement correctly distinguishes cause of death from mechanism of death?

• A. Cause is the physiological derangement; Mechanism is the injury producing it.
• B. Cause is the injury or disease; Mechanism is the physiological derangement resulting in death.
• C. Cause is the external event; Mechanism is the time of death.
• D. Cause is the place of death; Mechanism is the manner of death.

Answer: (B)

The distinction hinges on what started the chain of events versus what actually stopped life. The cause of death is the injury or disease that began the lethal sequence. The mechanism of death is the physiological derangement that directly results in death. For example, a gunshot wound to the chest starts the fatal process—the cause is the wound. The mechanism is the body’s response to that injury, such as exsanguination leading to shock and organ failure. Another case: an airway obstruction starts the fatal process (cause), and the mechanism is hypoxia/hypoxemic brain injury that follows. Note that time, place, or manner are separate classifications and do not define the mechanism.

The distinction hinges on what started the chain of events versus what actually stopped life. The cause of death is the injury or disease that began the lethal sequence. The mechanism of death is the physiological derangement that directly results in death.

For example, a gunshot wound to the chest starts the fatal process—the cause is the wound. The mechanism is the body’s response to that injury, such as exsanguination leading to shock and organ failure. Another case: an airway obstruction starts the fatal process (cause), and the mechanism is hypoxia/hypoxemic brain injury that follows.

Note that time, place, or manner are separate classifications and do not define the mechanism.