Prehospital Trauma Life Support (PHTLS) Practice Test

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At what systolic blood pressure should a high index of suspicion for shock occur in an elderly trauma patient?

90 mmHg
150 mmHg
120 mmHg
100 mmHg

The correct answer is: 120 mmHg

In elderly trauma patients, it is critical to recognize the signs of shock early, as this population often has a lower physiological reserve and can deteriorate more rapidly. While a systolic blood pressure of 120 mmHg is generally considered normal, it is also a threshold where clinicians should start to suspect that something might be wrong, especially in the context of trauma. Elderly patients often have different baseline blood pressures due to age-related changes in vascular compliance and other factors. As a result, they may not maintain blood pressure levels as effectively as younger patients when facing significant blood loss or other trauma-related stressors. Therefore, a systolic blood pressure at or below 120 mmHg can be an indication that the body is struggling to compensate for injury or illness, making it essential to closely evaluate for signs and symptoms of shock. By closely monitoring blood pressure in trauma patients, particularly the elderly, healthcare providers can take timely action to manage potential shock, which can significantly impact patient outcomes.