As a part of a primary intervention, Emergency Medical Services (EMS) may leave a patient at the scene. This decision is made in partnership with the dispatching center. The prognosis of these patients is often unknown. The aim of our study was to assess the outcomes of non-transported EMS patients.

It was a descriptive, prospective study conducted over a two-year-period. We included all alive non-transported EMS patients from the site of intervention after a primary mission of the EMS team based on a medical decision. The prognosis was assessed by unexpected events (UE) defined by death, second EMS call, urgent consultation or hospitalization/surgery within seven days. We considered two groups: a group with UME (UME+) and a group with good evolution (UE-).

We included 97 patients. The average age was 56±19 years. Seventeen patients (17,5%) had no medical histories. Hypoglycemia was observed in 43% of patients. Thirty-four patients (35%) had an UE. These UEs were distributed as the following: ten consulted a private doctor, ten consulted their family physician, seven called the EMS, three visited the emergency department and four died. There were no significant differences in demographic, anamnestic characteristics between two groups. Psychiatric pathology was more common in the UE- group(28% vs. 9%; p=0.0037). Intravenous injections were more common in the UE+ group (64% vs 39% ; p=0,019). Among the four deaths, three were unexpected.

One-third of non-transported EMS patients had UE. Unexpected death was rare (one patient). Setting-up a system for these patients including scores and algorithms, and a post-EMS compulsory visit in collaboration with family physicians could be beneficial.