You arrive at the scene of an apparent death. Which of the following is a definitive sign of death?

• A. Absence of a pulse
• B. Profound cyanosis
• C. Dependent lividity
• D. Absent breath sounds

Answer: (C)

One definitive sign of death is dependent lividity, which refers to the pooling of blood in the lowest parts of the body after the heart has stopped beating. This occurs due to the effects of gravity on the blood once circulation ceases, resulting in a noticeable discoloration of the skin in areas that are in contact with the ground. This change in color can provide clear evidence that the person has died, as it signals that the body's circulation has completely ceased.

In contrast, absence of a pulse, profound cyanosis, and absent breath sounds can all occur in situations where resuscitation might still be possible. For instance, pulselessness could result from certain medical conditions or situations where circulation is temporarily compromised but may be restored. Similarly, cyanosis can be a sign of severe hypoxia, and absent breath sounds may indicate obstructed airways or respiratory failure rather than definitive death. These signs can suggest life-threatening conditions requiring immediate intervention, rather than confirming that death has occurred. Therefore, dependent lividity serves as a more definitive indicator in the context of determining death on the scene.