Tactical Paramedic Certification Practice Exam – Complete Study Guide 2025

Decreased tissue perfusion due to shock is a significant cause of acidosis in trauma patients, particularly as part of the Lethal Triad, which encompasses coagulopathy, hypothermia, and acidosis. When tissue perfusion is compromised, it leads to inadequate oxygen delivery to the cells. As a result, cells resort to anaerobic metabolism to meet energy demands, generating lactic acid as a byproduct. The buildup of lactate in the bloodstream contributes to metabolic acidosis.

In trauma situations, significant blood loss or systemic shock exacerbates this process—effective circulation is impaired, and acidosis becomes more pronounced. Addressing the underlying cause of shock, such as through fluid resuscitation and restoring circulation, is crucial in managing acidosis and improving patient outcomes during trauma care.

Other factors impacting a trauma patient's condition, such as excessive fluid loss or temperature regulation failure, can influence overall stabilization and recovery but are not as directly tied to the mechanism of acidosis as decreased tissue perfusion due to shock. Increased oxygen supply does not contribute to acidosis; in fact, oxygenation is a key element in preventing the progression to acidosis.