After cosmetic surgery, many people know that cold or hot compresses are needed for a smooth recovery and to speed up the reduction of edema. But when should you apply cold compresses? When should a hot compress be applied? What is the most appropriate cold or hot compress? Many people are not sure. Now we will briefly talk about this common problem. It is generally accepted that as long as the wound does not get wet and cause infection and other problems. Cold compresses and hot compresses are suitable for almost all wounds in the postoperative recovery. Specific methods of operation: 1, cold compresses – 48 hours after surgery cold compresses Functions: 2 days after surgery is the wound blood vessels are prone to bleeding, at this time the ice can make the surgical site of the blood vessels in the cold contraction, reduce bleeding, and is conducive to recovery. Cold compress therapy commonly used are the following two: (1) ice bag: this is a dry cold compress, in the conditions of ice, cold compress is particularly effective, in the rubber made of ice bags, filled with half a bag of crushed ice (or cold water), the bag flat on the table, so that the bag to raise the mouth of the bag, gently press the bag, the bag to discharge the gas, and then tighten the mouth of the bag, dry the surface of the water, the set on the cloth sleeve, placed on the forehead, groin and armpit, etc. can be. Cold compress time is generally 20 to 30 minutes, many times a day. (2) Wet cold compresses: use a basin to hold cold water (in winter, you can put ice cubes, and in summer, it is best to use freshly taken well water), soak two small towels or gauze in the basin, take out and wring it out until it is half-dry and then apply it to the affected area. 4~5 minutes to change the cloth once, and each time, it can be applied for 20-30 minutes several times a day. Note: After surgery or within 2 days after the injury, it is not a hot compress! Rather, it is a cold compress! This is a point that many people happen to get backwards! Ice bag broken water, can not be used again, and need to replace the wound dressing in a timely manner to avoid infection. 2, hot compresses – 4 days after surgery to start hot compresses Effect: hot compresses can make the body surface temperature, subcutaneous tissue stretching, spasm of the capillary relaxation, dilation, blood flow to speed up the metabolism, and promote the lesion part of the tissue blood, bruising, muscle, anti-inflammatory, swelling, pain and scar tissue softening. Hot compress therapy commonly used are the following two: (1) hot water bag method: belongs to a dry heat method. First check the hot water bag for leaks, and then the hot water (preferably 60 ℃ ~ 70 ℃) filled to the bag capacity of 2 / 3, exhaust gas, tighten the mouth of the bag, dry the bag outside of the water, loaded into a cloth cover or wrapped in cloth to be used. In general, each hot compress 20 ~ 30 minutes, 3 ~ 4 times a day. If there is no hot water bag, you can also use a thermos (wrapped in a towel) hot compresses, can also be used to fry hot salt or rice into a cloth bag instead. (2) wet hot compress method: compress can be made of gauze or towel. First of all, the compress is immersed in a hot water basin, removed and wrung to half-dry, with the palm of their wrists to test whether the temperature is appropriate (must not be hot to be applied to the affected area), the top of the dressings and then covered with cotton pads, so as not to dissipate the heat, about every 5 minutes to change the dressings 1 time. Change the compress about every 5 minutes. Prepare two pieces of compresses and observe the skin color when changing them. Apply the compresses for 15 to 20 minutes each time, 3 to 4 times a day. Precautions: Pay attention to the towel and hot water bag should not be too hot to avoid burns. For wounds with nerve damage, local numbness of the patient should be more careful. Pay attention to keep the wound dressing dry, once not deep wet, need to change the wound dressing in time to avoid infection. A bag of multi-purpose, easy hot and cold compresses method in the supermarket to buy the kind of sachets of soft-packed refrigerated milk, pay attention to do not hard-packed, not frozen into ice cubes, just refrigerated only. Then can be used directly for cold compresses. When it is not cold, there is a refrigerator can be frozen Repeatedly used; no refrigerator, you can drink directly to enhance the nutrition. More than 2 days after the operation, hot compresses can also be used with this milk bag, but need to be soaked in hot water beforehand to warm it up.