What does the term "dead on arrival" imply?

The term "dead on arrival" specifically indicates that the patient was transported to a medical facility but did not survive the journey. This phrase is commonly used in emergency medical services and law enforcement to communicate that, upon arrival at the hospital or clinic, the medical staff found no signs of life. The implication is that no resuscitation efforts were successful or that the patient had already expired before reaching the medical facility. Understanding this term is essential for medical and forensic professionals as it helps establish the timeline of events leading to the individual's death, which is crucial in investigations and for determining causes of death.