Stage "M" of the M.A.R.C.H. algorithm is focused on massive hemorrhage, which is a critical issue in emergency medical care. One of the most important tasks at this stage is the rapid identification of the bleeding source and its immediate cessation.

Stopping the bleeding may require various methods, including applying a compression bandage to the injured area, using special hemostatic agents, or even emergency surgical intervention. Quick and effective action at this stage can save the patient's life and prevent further threat to their health.

An additional crucial component of the "M" stage is establishing access to the venous system to enable infusion therapy. This allows providing the patient with necessary fluids, blood, and other medications to support circulation and ensure essential resources for the body.

In general, the "M" stage of the M.A.R.C.H. algorithm is a key phase in managing emergency situations involving bleeding. Rapid and accurate diagnosis of the bleeding source, immediate cessation, and establishing access to the venous system determine success in the treatment and rehabilitation of the patient.