Seaside

Emt in medic school and just wondering about calling an unattended death. is lividity without rigor in a warm unwitnessed cardiac arrest enough in your opinion to not start Cpr? Classmate brought up the discussion and it's been debated amongst us students. Local protocol states lividity and/or rigor and obviously apeniec and pulseless. Am I wrong to consider it situational such as someone in bed or climate controlled areas?