Which of the following is the fourth element in the ABCD framework for dental emergency protocols?

• A. Airway
• B. Breathing
• C. Circulation
• D. Early Defibrillation

Answer: (D)

The sequence used in dental emergency protocols is arranged to rapidly address life threats in order: secure the airway, ensure breathing, and check circulation, then act on heart rhythm with defibrillation when needed. The fourth step is defibrillation because, if the patient’s heart rhythm is one that can be shocked (a shockable rhythm), delivering a defibrillating shock as soon as an AED is available can restore a normal rhythm and markedly improve survival. In practice, this means having an AED ready and applying it promptly while continuing high-quality CPR as needed. This emphasis on early defibrillation is what makes it the correct fourth element in the framework.