Portable Ultrasound for Detailed Ultrasound Examination With advances in medicine, there have been advances in the methods of examining chronic venous insufficiency. Ultrasound Doppler has replaced venography as the test of choice. In particular, the use of portable ultrasound has made it possible for vascular surgeons to perform detailed ultrasound examinations on patients in the outpatient setting to clarify conditions such as venous valve function. However, in some special cases, such as patients with a history of lower extremity deep vein thrombosis, deep venography is still needed to clarify the condition. Symptomatic and causative treatments Chronic venous insufficiency can be categorized into 2 types according to different treatment purposes: symptomatic treatment and causative treatment. Symptomatic treatments include intravenous active medications, compression support therapy, and sclerotherapy. These 3 types of treatment can only achieve relief of clinical symptoms and slow down the disease process. Allopathic treatment refers to surgical treatment, i.e., removal of diseased superficial veins and repair of diseased venous valves, which can treat chronic venous insufficiency fundamentally. There are many types of venous active drugs, most of them are extracted from plants, and their mechanism of action is to increase venous elasticity and venous blood flow rate, which can alleviate the clinical symptoms such as limb soreness to a certain extent and slow down the development of the disease. Let’s say, for example, a chronic venous insufficiency patients in accordance with the normal disease progression, 5 years after the emergence of venous stasis ulcers, if these 5 years are taking venous active drugs, the emergence of ulcers will be delayed for a number of years. However, the delay alone cannot be avoided. Compression support therapy refers to compression stockings, compression bandages and air pumps for the lower extremities, primarily compression stockings. These stockings, which have the greatest pressure at the ankle and gradually decrease in pressure upwards, effectively use external pressure to support the return of blood to the venous system of the lower extremities and to counteract the force of gravity. However, as with medication, compression stockings can only reduce symptoms, not achieve a cure. And they often lead to discomfort, especially in the hot summer months, which many patients cannot tolerate. Sclerotherapy involves injecting a hypertonic solution (e.g., highly concentrated saline or medication such as sodium cod liverate) into the varicose vein, destroying the lining of the blood vessel and causing it to disappear after sealing and healing. Sclerotherapy injections are very suitable for limited or recurrent varicose veins, but are inadequate for more complex chronic venous insufficiency. Surgery is one of the main treatments for chronic venous insufficiency. After centuries of development, minimally invasive surgery is now popular with small incisions, minimal or no bleeding, fast recovery and little or no scarring. Especially in recent years, “Day surgery” can significantly reduce medical costs, shorten hospitalization time, and also ensure the quality of medical care, which is the mainstream trend of contemporary medical development. However, the “Day surgery” mode requires a high level of professional and technical skills of doctors, service concepts and the comprehensive strength of hospitals, and is currently carried out in only a few tertiary hospitals in China. Health care knowledge 1, as much as possible to exercise calves: do more to help blood circulation of sports, such as swimming, cycling, running, dancing and so on. When standing or sitting for a long time, make time to exercise your legs. 2.Protect the lower limbs: avoid sunbathing, sauna and other activities that increase the temperature of the legs; raise your legs about 10cm when you rest at night (pay attention to the protection of the knee joints!). Maintain a normal weight to reduce the burden on the lower limbs; avoid wearing too tight clothing and pants, and try to wear less high heels. 3.Improve your diet, make sure you take in enough fiber, and keep your bowels clear. 4. For pregnant women: prevention of chronic venous insufficiency should be started from the 4th month of pregnancy, by moving the lower limbs more often, the simplest activity is to flex and extend the ankle joints.