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avoid strenuous exercise, drinking, applying pressure, taking anticoagulant drugs and facial care. Data show that exercise and drinking can prolong the swelling time by about 1-2 days, and applying pressure can cause uneven distribution of the drug and prolong the recovery period by 30%.
Cold compress
Studies have shown that the peak time of swelling is usually 4-8 hours after injection. During this period, the temperature of local tissues may rise to above 37.5°C, and cold compresses can effectively reduce the temperature of the skin surface by about 5-8°C.
If each cold compress lasts more than 15 minutes, according to the recommendations in the “Guidelines for Postoperative Care of Medical Cosmetology”, the blood flow rate of local tissues may drop to less than 50% of the normal level. At the same time, the frequency of cold compresses should not exceed 3-4 times a day.
According to the data from the 2022 Skin Care Equipment Market Report, the sales volume of medical cold compresses accounted for 65% of the total market. The local skin temperature of ice pack cold compresses may drop to below 10°C, and the appropriate cold compress temperature should be controlled between 15-20°C.
Specific data show that among patients who received cold compresses, the drug absorption rate was only 2.5% lower than that of patients who did not receive cold compresses. When applying cold compresses, the cold compress bag should be wrapped with soft cotton cloth or towels, and the local pressure should be kept below 100 grams/square centimeter.
A satisfaction survey covering 500 patients showed that about 72% of patients believed that cold compresses effectively relieved postoperative swelling, but 12% of patients reported that cold compresses caused slight tingling or skin discomfort.
It is usually recommended to apply cold compresses within 24-48 hours after surgery, and after 48 hours, hot compresses can be gradually changed to promote blood circulation and metabolism. One study of 200 patients showed that hot compresses shortened the recovery time by an average of 2-3 days. The price of medical cold compress products with safety certification is usually between RMB 50-100.
Use active drugs within 24 hours
6-12 hours after drug injection is the stage with the strongest biological activity. Statistics show that more than 95% of patients who use fat dissolving injections will feel slight swelling and pain at the injection site, which is mainly the result of the reaction between the drug and fat cells.
About 80% of patients who use active drugs after injection will experience local “hardening” within 24 hours. Generally speaking, this hardening will gradually soften within 3-7 days and be discharged through the body’s metabolic system.
Within 24 hours after injection, the peak response of fat dissolving agents may increase the local metabolic rate by about 30%-40%. In the first 24 hours after the fat dissolving injection, the body’s inflammatory response will also increase significantly. If the fever exceeds 37.8°C, or there is severe redness or swelling in the injection area or it continues to worsen, you may need to seek medical attention in time.
Doctors usually recommend avoiding strenuous activities in the first 24 hours. Data show that among the 300 patients participating in a clinical study, more than 90% chose to rest in the first 24 hours after surgery. Those who did not follow this advice had a nearly 35% higher probability of postoperative complications such as congestion and increased swelling.
Avoid high-salt or high-sugar foods in the first 24 hours. In a study involving 150 subjects, patients who chose a low-salt diet had an average of 2 days shorter time for swelling to subside.
Vigorous exercise within 24 hours
According to data from a study of 200 patients who received fat-dissolving injections, those who performed high-intensity exercise within 48 hours after surgery had swelling at the injection site last an average of 1.8 days longer.
The study showed that among 100 patients who reported increased swelling after injection, more than 60% performed moderate to high-intensity exercise, such as running, fitness, or long walks, within the first 24 hours after surgery. A study based on magnetic resonance imaging technology found that in patients who exercised immediately after surgery, the drug diffusion range was expanded by about 15% compared with the rest group.
During exercise, core body temperature may rise to above 38°C, which may increase redness, swelling and discomfort at the injection site. In an experiment covering 150 patients, 72% reported that the injection site felt more swollen and painful after exercise, and 10% of patients required additional ice treatment to relieve discomfort.
In an analysis of postoperative infection, more than 30% of local infection cases were found to be related to improper exercise or cleaning habits after surgery. Research data show that patients who do not strictly avoid contact with the injection area have a twice as high infection rate as other patients.
Drinking within 24 hours
The effect of drinking on recovery within the first 24 hours after fat dissolving injection cannot be ignored. According to a medical study, the vasodilation effect is most significant within 24 hours after drinking, and the duration of local swelling increases by 30%.
Among patients who undergo fat dissolving injections, 40% experience significantly longer recovery time at the injection site after drinking, an average of 1 to 2 days longer. According to a liver function study, alcohol intake reduces the liver’s metabolic rate by about 20%-30%.
According to a follow-up survey of 200 fat dissolving injection patients, 70% of the participants drank within 24 hours after the injection, and the recovery process was generally longer. Those who abstained from alcohol within 24 hours after surgery had significantly better results.
Applying pressure within 48 hours
If applied externally within 48 hours. Experimental data show that in patients who applied pressure immediately after injection, the uniformity of drug distribution was reduced by about 25%.
Studies have shown that patients who received pressure massage within 48 hours after surgery experienced a prolonged recovery period of swelling of about 1 to 2 days, and 70% experienced varying degrees of bruising during the process.
According to a long-term follow-up study of postoperative recovery, about 30% of patients who applied pressure experienced suboptimal recovery progress. Clinical observations show that the incidence of local infection in patients who applied excessive pressure within 48 hours was about 12%.
Within 48 hours after injection, the application of pressure can lead to an increased inflammatory response, which in turn causes more intense pain. In a survey of 500 patients who had fat-dissolving injections, about 40% of patients said that the pain was more than twice as severe as usual when pressure was applied after surgery, and it lasted longer than the normal recovery period. In an experiment, it was found that in patients who applied pressure after injection, the effect of fat dissolution was weakened by about 15%, accompanied by more obvious local lumps.
Taking blood thinning drugs within 7 days
According to a clinical study, patients taking anticoagulants had about 30% longer duration of congestion after fat dissolving injections, and swelling in the injection area lasted 1 to 2 days longer than patients who did not take such drugs. Studies have shown that about 20% of patients who use anticoagulants experience prolonged local skin healing time.
Clinically, patients taking anticoagulants have an infection rate that is about 15% higher than that of ordinary patients. According to a study on postoperative recovery, patients may feel about 20% more pain than those who do not use anticoagulants, especially within 48 hours after injection, when the intensity and duration of pain will increase significantly.
Facial care within two weeks
Research data show that intervention will reduce the effect of injection by about 10%-15%. Especially within 48 hours after injection, fat dissolving drugs are in the initial stage of action.