What is one of the reasons EMT personnel may terminate CPR?

One of the reasons EMT personnel may terminate CPR is the absence of return of spontaneous circulation after an extensive period, typically around 30 minutes of CPR and AED analysis. This decision is based on clinical guidelines and the likelihood of a favorable outcome. Prolonged resuscitation attempts without success may indicate that the chances of revival have diminished significantly.

Emergency Medical Services (EMS) protocols often provide specific time frames after which resuscitation efforts can be deemed futile, taking into account factors such as patient condition, age, and the cause of cardiac arrest. This helps ensure that resources can be appropriately allocated to patients who still have a viable chance of recovery.

In contrast, the other options pertain to situational elements that would not typically influence the decision to cease resuscitation efforts, such as the location of the patient, the use of tranquilizers, or the presence of family members. While these factors may influence the overall care approach or emotional considerations, they do not serve as clear clinical guidelines for terminating CPR in the manner that a lack of return of spontaneous circulation does.