The presence of tachycardia after a significant abdominal injury should be interpreted as a sign of what?

• A. Anxiety.
• B. Normal response to pain.
• C. Should be assumed to be a sign of shock.
• D. Unrelated to injury.

Answer: (C)

Tachycardia after a significant abdominal injury points to shock from blood loss and reduced tissue perfusion. When a large amount of blood pools in the abdomen, circulating volume drops and the body responds with the sympathetic system, raising heart rate to maintain blood flow to vital organs. In the trauma setting this makes tachycardia a red flag for hemorrhagic (hypovolemic) shock, even if blood pressure hasn’t yet fallen. While anxiety or pain can cause slight increases in heart rate, the presence of tachycardia in the context of major trauma is best interpreted as a sign of potential shock and warrants rapid assessment and treatment, including airway and breathing support, IV access, rapid transport, and control of bleeding.