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Warm: heat therapy can make local blood vessels dilate, promote blood circulation so that the patient feels warm and comfortable. It is mainly used for keeping warm in critically ill, old and infirm, children and patients with poor peripheral circulation.
Relieve pain: heat therapy can reduce the excitability of painful nerves, improve blood circulation, reduce inflammatory edema, accelerate the discharge of painful material, and the absorption of exudate, thereby removing the pressure of local nerve endings. Heat therapy can also relax tissues such as muscles, tendons, and ligaments, and relieve pain caused by muscle spasms and stiffness of joints. Often used for lumbar muscle strain, renal colic, gastrointestinal spasm, and other patients.
Improve blood circulation and prevent inflammation: hyperthermia can dilate local blood vessels and increase blood flow on the body surface, thus reducing congestion in deep tissues and preventing inflammation.
Promote dissipation of inflammation: heat therapy can make local blood vessels dilate, blood flow speeds up, conducive to the discharge of toxins in the tissue; At the same time promote blood circulation, increase blood flow, accelerate metabolism, enhance the phagocytic function of white blood cells. Therefore, heat can promote the absorption and dissipation of inflammatory exudate in the early stage of inflammation. In the late stage of inflammation, heat can release proteolytic enzymes from white blood cells to dissolve necrotic tissue, thus contributing to the removal of necrotic tissue and tissue repair, so that inflammation is limited.