Which ABCDE category corresponds to circulation problems such as weak pulses, hypotension, or bradycardia?

• A. Airway
• B. Breathing
• C. Disability
• D. Circulation

Answer: (D)

Circulation focuses on perfusion and the body’s ability to deliver blood to tissues. Signs like weak pulses, low blood pressure, and bradycardia point to inadequate systemic perfusion and are therefore categorized under circulation. In pediatric emergencies, weak pulses and hypotension indicate compromised blood flow, while bradycardia often signals severe hypoxia and worsening circulatory failure, sometimes approaching cardiac arrest. This category drives actions aimed at restoring and supporting circulation, such as rapid assessment of pulse quality and perfusion, appropriate fluid or vasopressor therapy when indicated, and, if the child is in cardiac arrest, initiating chest compressions and rapid advanced care.

By contrast, airway concerns the patency and protection of the airway and the adequacy of oxygen delivery; breathing deals with ventilation and gas exchange; disability assesses neurologic status; and exposure involves a full body check for other injuries or conditions.