Context: shock is a serious pathology where diagnostic and therapeutic speed determines the prognosis, ultrasound can be a valuable aid for the emergency physician to differentiate the different types of shock and allow appropriate treatment.

Hypothesis: what are the uses of ultrasound in the initial diagnostic and therapeutic management of patients in shock at the Emergency Department of Nancy? Main outcome: Describe the use of ultrasound in the initial diagnostic and therapeutic management of patients in shock at the Nancy Emergency Department Secondary outcome: Study the contribution of the use of different ultrasound techniques in the initial diagnostic and therapeutic management of patients depending on the type of shock state

Inclusion Criteria:

• Age ≥ 18 years old
• Shock (MAP < 65 mmHg + lactate ≥ 2 mmol/l)
• Admission to the Nancy ED between 01/01/2023 and 12/31/2023
• ICD-10 output coding: R57: shock, not elsewhere classified; R570: cardiogenic shock; R571: hypovolemic shock; R572: septic shock; R578: other shocks; R579: shock, unspecified; T794: traumatic shock; T782: anaphylactic shock, unspecified; or diagnosis of entry into intensive care including the word "shock"

Exclusion Criteria:

• Age < 18 years old
• Absence of shock
• No passage through the Nancy ED
• Patient whose initial treatment was carried out in another emergency department
• State of shock occurring after going to the emergency department

Adults in shock at the Nancy ED