During the trauma primary survey, what does the A-B-C-D-E sequence primarily prioritize?

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Securing an open airway with cervical spine protection comes first, because a blocked airway or spinal injury can cause rapid deterioration or death. While maintaining the airway, you protect the neck to prevent further spinal damage. Once the airway is ensured, you move on to breathing to verify ventilation and oxygenation and address any chest injuries or respiratory failures. After breathing, you assess circulation to identify and control life-threatening bleeding and evaluate perfusion and shock risk. With the major life threats in check, you evaluate disability to establish a quick neurologic baseline and detect potential brain injury. Finally, you expose the patient to fully inspect for hidden injuries, while taking steps to prevent hypothermia.