Prepare for the Prehospital Trauma Life Support (PHTLS) exam. Access diverse quizzes and multiple-choice questions, each with hints and comprehensive explanations. Enhance your readiness and confidence for the PHTLS certification exam!

Multiple Choice

Delayed death after trauma is typically caused by which of the following?

Delayed death after trauma often results from the biochemical and pathophysiological effects of inadequate initial resuscitation. When perfusion isn’t adequately restored, tissues remain underperfused and shift to anaerobic metabolism, producing lactic acid and causing acidosis. This acidosis worsens coagulopathy and cellular dysfunction, which perpetuates hypoperfusion and leads to progressive organ failure. Over hours to days, this cascade can culminate in multi‑system failure and death. Inadequate resuscitation can also trigger a systemic inflammatory response and immune dysfunction, increasing vulnerability to infections and sepsis, further contributing to delayed mortality. Immediate blood loss at the scene tends to cause death earlier, not delayed. Brain injury alone is not the typical mechanism of delayed death, and while infection can develop later, it’s usually a consequence of the initial systemic derangements rather than the primary cause of delayed mortality.

Delayed death after trauma often results from the biochemical and pathophysiological effects of inadequate initial resuscitation. When perfusion isn’t adequately restored, tissues remain underperfused and shift to anaerobic metabolism, producing lactic acid and causing acidosis. This acidosis worsens coagulopathy and cellular dysfunction, which perpetuates hypoperfusion and leads to progressive organ failure. Over hours to days, this cascade can culminate in multi‑system failure and death. Inadequate resuscitation can also trigger a systemic inflammatory response and immune dysfunction, increasing vulnerability to infections and sepsis, further contributing to delayed mortality.

Immediate blood loss at the scene tends to cause death earlier, not delayed. Brain injury alone is not the typical mechanism of delayed death, and while infection can develop later, it’s usually a consequence of the initial systemic derangements rather than the primary cause of delayed mortality.