Inclusion Criteria:  Patients older than 18 years Admitted for acute abdominal pain lasting for less than 5 days Availability in the ED at that time of an Emergency Physician trained in POCUS Patient able to understand the protocol and having given oral informed consent to participate in the study or included under the emergency inclusion procedure  Exclusion Criteria:  Documented end-of-life with a do-not-resuscitate order Immediate need for management for hemodynamic stabilization Patient sent to the ED by an out-of-hospital practitioner Pregnant and breast-feeding women No social security Under guardianship, curatorship or deprived of liberty. Do not understand French