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There are many causes of varicose veins of the lower limbs, the most common is simple superficial varicose veins of the lower limbs, which is mainly due to the insufficiency of the femoral saphenous vein valve. Another important ** is seen in primary lower extremity deep vein valve insufficiency (PDVI), which is often associated with saphenous vein valve insufficiency, which often presents with tortuous dilation of superficial veins. In addition, post-deep vein thrombotic syndrome of the lower extremities, in which superficial veins compensate for tortuous dilation occur due to poor deep venous return; Lower extremity arteriovenous fistula and venous malformation hyperosteopathy syndrome can also have superficial varicose veins of the lower extremities; Obstruction of inferior vena cava return, such as Budd-Chiari syndrome, can also lead to varicose veins in the lower extremities.
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Varicose veins of the lower limbs is a common vascular disease, due to high intravenous pressure, resulting in loss of venous valve function, causing difficulty in venous blood flow, forming varicose veins, with the continuous expansion of the veins of the lower limbs, the patient will have an "earthworm-like" appearance, with the change of appearance, standing for a long time, there will be soreness in the calf, for a long time, there will be various complications with the disease.
There are two main factors that form varicose veins of the lower limbs, first, the cause of the blood vessels themselves, these factors are often brought by congenital genetics, their blood vessels are weaker than others from birth, and varicose veins are prone to genetic factors;
Second, acquired factors, any external factors can lead to the formation of varicose veins of the lower limbs, such as heavy work, long-term need to stand at work, pregnant women, these factors are caused by the nature of each person's occupation, so it will eventually lead to varicose veins, including some medical, public relations, agriculture and other industries are high incidence of varicose veins of the lower limbs.
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Varicose veins refer to the tortuosity and dilation of veins due to factors such as blood stagnation and weak venous walls. Varicose veins can occur in many parts of the body, such as hemorrhoids are actually a kind of varicose veins, and clinical manifestations include esophageal and gastric varices, varicoceles and abdominal wall varices. Varicose veins most often occur in the lower extremities.
It is worth emphasizing that varicose veins are secondary manifestations of other lesions.
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There are two main causes of varicose veins in the lower extremities:
Internal causes: congenital venous wall weakness and venous valve insufficiency (familial genetic factors).
External causes: increased venous pressure in the lower extremities (acquired factors such as age, prolonged standing or sitting, pregnancy).
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Varicose veins are divided into internal and external causes.
The internal cause is due to congenital valvular insufficiency.
The external cause is caused by excessive pressure on the lower limbs due to long-term sitting and standing for a long time.
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Pathological changes in varicose veins of the lower extremities occur mainly in the middle layer of the venous wall. In the early stages of the disease, both the elastic and muscular tissues in the middle layer thicken, and this change can be seen as a compensatory response to increased venous pressure.
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The early symptoms of varicose veins are the blood vessels on the calves, varicose like earthworms, which are clearly prominent, the protruding blood vessels are clumps or nodules, the limbs are sore, there is pigmentation, scaling and itching, the feet are swollen, there is a pinprick sensation and an itching sensation, numbness, and a burning sensation.
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What are varicose veins? Why varicose veins.
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Quit smoking, because smoking can change the viscosity of the blood, and the blood becomes viscous and easy to stagnate.
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Got a lot of varicose veins:
1. Being sedentary for a long time and maintaining a sitting posture for a long time will make the blood circulation in the legs poor for a long time, and the blood flow will be unfavorable. It's like bending a normal water pipe so that the water can't flow out very smoothly, related"valves"It will also be deformed with blood vessels. The less blood is sent up the veins, and the valve cannot function properly for a long time, causing lesions.
2. Standing for a long time, the bridge mold vein blood is always in the process of maintaining an upward delivery of blood, and the valve can not rest. Naturally, it will exacerbate the fatigue of the valve, causing damage, which in turn will cause sensitive and slow varicose veins. Many teachers, doctors, and traffic police are prone to this situation.
3. Obesity, excess fat will have a serious impact on organs and muscles. When there is too much fat, it wraps around the blood vessels and organs, squeezing the blood vessels. The squeezed blood vessel leakage valve cannot open and close normally, and the legs have to support the fat body, which will cause the valve function to be impaired and unable to work normally in the long run.
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What is Silent Repentance? Why does the vein sedan contain orthovaricose sedans.
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Varicose veins are a very common disease, suffering from varicose veins will affect our health all the time, so what are the causes of varicose veins? 1. Weak vein wall and valve defects: The vein wall is relatively weak and can be dilatated under venous pressure, and the expansion of the valve sinus leads to the inability of the original venous valve to close tightly, resulting in relative insufficiency of the valve and blood reflux.
Underdeveloped or absent valves, which are also not effective in preventing reflux, are one of the leading causes of varicose veins. 2. Due to the long-lasting increase in intravenous pressure: due to the effect of gravity, the venous blood itself produces a certain pressure on the valve, which will not cause damage to it under normal circumstances, but when the intravenous pressure continues to rise, the valve will be subjected to excessive pressure, and gradually relax, prolapse, and make it incomplete.
This is more common in long-term standing work, heavy physical exertion, pregnancy, chronic cough, long-term constipation, etc. 3. Also include age and gender: because the venous pressure of the limbs only reaches the highest pressure when the body length reaches the highest, the body is not high before puberty, so the vein caliber is small, which can prevent the vein from expanding, so although there are severe varicose veins before the age of 30, most of them gradually lose their tension with age, and the symptoms aggravate and force the patient to seek medical attention.
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1. Varicose veins are caused by blood return disorders caused by poor venous valve function of the lower limbs, and are also an occupational disease, caused by standing for a long time. 2. The occurrence of varicose veins is believed to be related to prolonged standing, infection, blood clots, etc., which affects the blood circulation of the lower limbs. 3. It is due to the congenital vascular wall membrane is relatively weak or the same posture is rarely changed for a long time, blood accumulates in the lower limbs, and the venous valve is destroyed over time and the venous pressure is too high, which is a symptom of the protruding surface of the blood vessels.
4 This is because the blood in the veins of the legs returns to the heart and needs to flow from low to high, which is contrary to the principles of physics, and relies on many valves in the veins that are shaped like small pockets. It acts like a valve, allowing blood to pass through when it flows in the direction of the heart, but blocking blood from flowing in the opposite direction.
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What are varicose veins? Why varicose veins.
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The main cause of varicose veins is due to the congenital vascular wall membrane is relatively weak or the same posture is rarely changed for a long time, and the blood accumulates in the lower limbs, resulting in the destruction of the venous valve and the venous pressure is too high. For example, standing for a long time, obesity, pregnancy, and illness can all lead to varicose veins. Try to elevate your lower limbs when resting, and be sure to avoid sitting or standing for long periods of time or pressing with your legs crossed.
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There are two scenarios for this:1congenital vascular valve insufficiency, congenital vascular disease is weak; 2.Standing for long periods of time, heavy physical exertion, and increased abdominal pressure during pregnancy. Even if it is a congenital and an external cause, it will appear.
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Varicose veins of the lower extremities are essentially problems with blood circulation in the lower limbs.
Because the same posture is rarely changed for a long time, the venous vessels are compressed by abnormal blood flow for a long time, resulting in impaired normal function of the intravascular valves, resulting in excessive blood accumulation in the blood vessels, and the venous valves are damaged over time and the venous pressure is too high, resulting in the thinning of the blood vessel wall and the protrusion of the blood vessels, resulting in varicose veins.
There is also a genetic cause of varicose veins caused by the lack of function of venous vascular valves.
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Varicose vein symptoms are the most common diseases of the venous system, and the main reason for the formation is due to the congenital vascular wall membrane is relatively weak or the same posture is rarely changed for a long time, blood accumulation in the lower limbs, and the venous valve is destroyed over time and the venous pressure is too high, which is a symptom of the protruding surface of the blood vessels.
Varicose veins are seen in vascular surgery.
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What are varicose veins? Why varicose veins.
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