Many elderly people found that when they walked for a while, they felt that their legs were filled with lead, and sometimes there were ants crawling over their feet. The legs were weak, heavy, and even sore. The feeling will disappear, why is this?
A few days ago, Chen Zhong, director of the Department of Vascular Surgery at Beijing Anzhen Hospital affiliated to Capital Medical University, said that patients with lower limb ischemia often have lower limbs chills, cold, fatigue, and sore symptoms after cold, which can be simply summarized as 'cool, Hemp, sour, pain'.
The cause of ischemia may be stenosis or occlusion of the lower extremity.
Chen Zhong said that this kind of leg pain caused by lower limb ischemia caused by lower extremity arterial stenosis is called vascular intermittent claudication.
When a patient visits a hospital, it is usually necessary to measure the blood pressure of the lower limbs. Normal people have a slightly higher blood pressure in the lower limbs, which is about 1.1 times that of the upper limbs.
When the blood pressure of the lower limbs is less than or equal to the blood pressure of the upper limbs, intermittent claudication symptoms may occur. The patient's lower limbs have developed ischemia, and intervention therapy should be performed as soon as possible.
When the blood pressure of the lower limbs is less than 40% of the blood pressure of the upper limbs, it indicates that the ischemia is serious. If it is not treated immediately, it will face the risk of amputation.
In life, you can detect the ischemia of the lower limb by observing the hair of the foot, pressing the toes, feeling the temperature of the foot and touching the dorsal artery.
In the early stage of lower limb ischemia, the hair of the foot will fall off. Under normal circumstances, press the toe with your finger, and the pressed part will turn from white to red immediately. If the lower limb has symptoms of ischemia, the toe pressing part will take several seconds to recover.
Lower limb ischemia can also cause hypoxia in the legs and feet, which can lead to cold legs. By feeling the beating strength of the dorsal artery, compared with the upper limb pulse or the contralateral dorsal artery, if the fluctuation is relatively weak, it also indicates Leg blood vessels are narrow or blocked.
