This video shows OMNA Marine Tourniquet self-application on the thigh and is a reference in Hingtgen E, Wall P, Buising C. OMNA Marine Tourniquet self-application. J Spec Oper Med 2020;20(3):52-61. In this application, the tourniquet is oriented so that the strap pull is downward. The ideal strap pull through the redirect buckle is with a strap angle of 0 degrees (parallel to the strap going into the redirect buckle) while avoiding inadvertent hook-and-loop to hook-and-loop interaction prior to intentionally securing the strap. The strap should be pulled and secured as tightly as possible, which involves grasping the strap close to where it exits the redirect buckle and a non-jerky pull with emphasis on achieving hook-and-loop to hook-and-loop interaction at the tightest point achievable. Tissue indentation should be clearly visible and all of the available hook-and-loop should be secured prior to use of the ratcheting buckle. Once the hook-and-loop to hook-and-loop strap is fully secured, the ratcheting buckle is advanced with the advancing pawl firmly pushed into the teeth of the ladder. As with other emergency-use limb tourniquets, completion needs to be at a pressure greater than occlusion to account for the physiologic decrease in under-tourniquet pressure that occurs over time.
The pressure graphs show the average under-tourniquet pressure on the medial aspect of the thigh. Characterization of the pressure measuring system is present in "Characterizing a system for measuring limb tourniquet pressures" by Hingtgen E, Wall P, Buising C in the Journal of Special Operations Medicine 2020;20(1):47-54. A video description of the OMNA Marine Tourniquet is available at vimeo.com/434732616.
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