How much blockage in a blood vessel requires the placement of a stent?

Jul 21, 2025 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

When the degree of vascular occlusion reaches 70% or more and is accompanied by significant ischemic symptoms, stent placement may need to be considered. When the degree of vascular blockage exceeds 70%, blood flow is severely affected, leading to insufficient blood supply to the corresponding organs and causing symptoms such as angina and dizziness. At this point, the effectiveness of drug therapy is limited, and stent treatment can rapidly open the vessel, restore blood flow, and alleviate symptoms.

Generally, when the degree of vascular blockage reaches 70% or more and is accompanied by significant ischemic symptoms, stent placement may be considered. If any abnormalities are present, timely medical consultation is recommended. Detailed analysis is as follows:

When the vascular blockage exceeds 70%, blood flow is severely affected, leading to insufficient blood supply to the corresponding organs and causing symptoms such as angina and dizziness. At this stage, the effectiveness of drug therapy is limited. Stent treatment can rapidly open the blocked vessel, restore blood flow, alleviate symptoms, and reduce the risk of acute cardiovascular events.

If the degree of vascular blockage is less than 70% and no obvious symptoms are present, conservative treatment options such as medication and lifestyle modifications are typically preferred. By controlling blood pressure, lipid levels, and blood glucose, along with improving dietary and exercise habits, the progression of blockage can be slowed, and vascular function can generally be maintained in a stable condition.

During treatment, it is important to maintain healthy lifestyle habits, such as a low-fat diet, avoiding high-salt and high-sugar foods, engaging in regular physical activity, and quitting smoking or limiting alcohol consumption, to support overall cardiovascular health.

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What to do about severe blood vessel blockage

In general, severe vascular blockage may be caused by long-term high-fat diet, lack of exercise, hypertension, hyperlipidemia, coronary artery atherosclerosis, and other factors. It is recommended to seek timely medical attention, identify the underlying cause, and then improve the condition under a doctor's guidance through general treatment, medication, surgical intervention, and other approaches. In daily life, it is important to quit smoking, limit alcohol consumption, avoid staying up late, and maintain emotional stability.

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How is foot vascular blockage treated?

Under normal circumstances, foot vascular blockage may be caused by long-term sitting or standing, decreased vascular elasticity due to aging, lower extremity varicose veins, hyperlipidemia, lower extremity arterial occlusive disease, and other related factors. It is recommended to seek timely medical attention, identify the underlying cause, and then improve the condition through general treatment, medication, surgical intervention, or other approaches under the guidance of a physician.

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What to do about blocked blood vessels in the legs

Under normal circumstances, leg vascular blockage may be caused by long-term sitting, obesity, varicose veins of the lower extremities, deep vein thrombosis of the lower extremities, atherosclerotic occlusive disease, and other related factors. Patients can visit a正规 hospital to choose general treatment, medication, and other methods to improve their condition. In daily life, it is important to maintain moderate exercise and avoid prolonged standing or sitting; the diet should primarily consist of light, healthy foods.