Is a stent absolutely necessary for blocked blood vessels?
Dec 02, 2022
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
Blocked blood vessels do not necessarily require stent placement. If the blockage is severe—for example, when coronary artery narrowing exceeds 75%—and there are significant clinical symptoms, stent placement is generally needed promptly to restore blood flow. However, if the blockage is mild, such as narrowing within 50% to 60%, and clinical symptoms are not particularly evident, conservative treatment is usually sufficient and stent placement is not required.
Whether stent placement is necessary for blocked blood vessels depends on the severity of the patient's condition—it may be required in some cases, but not in others.
1. Required
Whether a stent is needed for a blocked vessel depends on the degree of blockage and whether symptoms are present. If the blockage is severe—for example, if coronary artery narrowing exceeds 75% with obvious clinical symptoms, or if narrowing exceeds 90%, or if carotid or vertebral artery stenosis is greater than 70%, or over 50% accompanied by transient limb movement disorders, dizziness, or imbalance—stent placement is generally recommended to promptly restore blood flow.
2. Not Required
If the vascular blockage is not particularly severe—for instance, narrowing within 50%–60%—and clinical symptoms are mild, conservative treatment with medications under a doctor’s guidance may be sufficient. This approach can prevent further severe blockage and improve blood flow, making stent placement generally unnecessary.
