Nursing Education Series: 'How to Apply Ice Correctly'
Acute injuries are often caused by sudden trauma (such as falls, sprains and direct impacts), and are usually accompanied by immediate, severe pain. Ice should be applied straight away – but do you know how to do this correctly?
The benefits of applying ice
1. Pain relief: Applying ice slows down nerve conduction, reduces excitation at nerve endings and raises the pain threshold, thereby helping to alleviate or eliminate pain.
2. Prevention of swelling: Applying ice causes local capillaries to constrict, thereby reducing local fluid leakage and alleviating swelling.
3. Reducing secondary damage: Cold stimulation lowers the local temperature, reduces cellular metabolism and minimises the production of free radicals, thereby mitigating secondary damage to tissue cells.
4. Inhibiting the inflammatory response: Applying ice causes local blood vessels to constrict and reduces blood circulation, thereby lowering the rate of tissue metabolism and suppressing the inflammatory response.
How to apply ice correctly
1. Duration of ice application: Begin applying ice immediately after the injury, repeating the treatment every 2–3 hours. If swelling, pain or heat are pronounced, apply ice every 1–2 hours. Limit each application to 15–20 minutes. It is important to remember that prolonged application can cause reflex vasodilation, which would be counterproductive. Furthermore, as ice therapy works by inhibiting circulation and tissue metabolism, excessive duration hinders the tissue's ability to heal itself from inflammation.
2. Apply ice to the area where the pain, swelling and heat are most pronounced. Taking the ankle joint as an example, centre the ice pack on the area where pain, swelling and heat are most evident; you may move the ice pack slightly during the session to ensure the entire joint is covered. If you have undergone surgery and there is a pronounced inflammatory reaction at or around the wound, focus the ice treatment on that area.
3. Duration of ice therapy: How long should ice therapy be applied for? According to the latest research, the optimal window for ice therapy is within 48 hours; if symptoms are severe, it may even be necessary to apply ice continuously for 72 hours.
4. Ensure full contact with the skin: When using an ice pack, ensure it is in full contact with the inflamed tissue so that the cooling effect can reach the affected area directly.
Contraindications for ice therapy
1. Circulatory disorders
Cold therapy should not be used in cases of systemic microcirculatory disorders, shock, peripheral vascular disease, arteriosclerosis, diabetes, neuropathy or oedema. This is because cold therapy causes further vasoconstriction, exacerbating circulatory problems and leading to local tissue ischaemia, hypoxia, degeneration and necrosis.
2. Extensive tissue damage
In cases of extensive tissue damage, cold therapy may exacerbate the injury and impair wound healing; its use should therefore be avoided.
3. Chronic inflammation or deep purulent lesions
Cold therapy reduces local blood flow, hindering the resolution of inflammation and worsening the condition.
4. Tissue damage, lacerations or open wounds
Cold therapy may reduce blood circulation, increase tissue damage and impair wound healing.
5. Individuals with cold allergy
The use of cold compresses may trigger allergic symptoms such as erythema, urticaria, joint pain and muscle spasms.
When applying ice packs, draughts should be avoided in the ward to prevent catching a cold.
If any adverse reactions are observed in the patient whilst using an ice pack, the procedure should be stopped immediately; the doctor should be notified and appropriate symptomatic treatment administered.
Protective measures should be taken during ice therapy; the ice pack may be wrapped in a towel or a thin layer of cloth placed between the skin and the ice pack to prevent moisture from the surface of the ice pack from wetting the wound.
If there is an open wound on the affected area, care must be taken when using an ice-water mixture to prevent leakage and contamination of the wound. After ice therapy, the skin in the treated area should be dried with a dry towel.
Please follow medical advice where necessary!!!
