Tourniquets Type Combat Application Tourniquet: Proximal or Distal Location, Simple or Staggered on Upper and Lower Limb

Tourniquets Type Combat Application Tourniquet (CAT): Vascular Suffering According to the Proximal or Distal Location, Simple or Staggered. Study to Upper and Lower Limbs

A tourniquet is used to stop abundant bleeding when simple compression is not effective. The investigators will study the vascular suffering of the tourniquets according to their location on the limb: limb (arm / thigh) or distal (forearm / leg). Vascular suffering will be evaluated by the loss of the radial doppler flux for the tourniquets placed on the upper limb and in the tibial anterior to the lower limb by the loss of the pulse oximetry pulse and the collection of the signs described by the volunteers (pain, Paresthesia, cold sensation).

Inclusion Criteria:

• Age greater than or equal to 18 years (major)
• Volunteer to participate in research

Exclusion Criteria:

• Age less than 18 years
• Known coagulation disorder
• Known vascular disorder
• Known neurological disorder of the limbs
• Known muscle disorders of the limbs
• Presence of an implant in one of the limbs (vascular, contraceptive ...)
• Simultaneous participation in research involving anticoagulant therapy
• History of phlebitis
• Persons of full age who are subject to legal protection (safeguard of justice, person placed in curatorship, guardianship), persons deprived of their liberty.
• Pregnant women