Decomposition, rigor mortis, dependent lividity, and decapitation are all examples of which category signaling that resuscitation is not necessary?

• A. Vital signs
• B. Unreliable signs
• C. Life signs
• D. Obvious signs of death

Answer: (D)

These signs show death beyond doubt and signal that resuscitation isn’t indicated. Decomposition, rigor mortis, dependent lividity, and decapitation are all postmortem changes or catastrophic injuries that confirm the person has died. Rigor mortis begins after death as muscles stiffen; dependent lividity is the pooling of blood in the lowest parts of the body; decomposition reflects ongoing tissue breakdown; decapitation is an irreversible fatal injury. Because these findings are definitive, initiating CPR or advanced life support would be futile according to standard EMS practice, so they’re categorized as obvious signs of death.