Who is not suitable for TAME (Transcatheter Arterial Microembolization)? Preoperative assessment, four groups requiring careful evaluation, and postoperative precautions
Who is not suitable for TAME (Transcatheter Arterial Microembolization)? Preoperative assessment, four groups requiring careful evaluation, and postoperative precautions
Article Summary
TAME transcatheter arterial microembolization is a treatment option for patients with long-term chronic pain, but it is not suitable for everyone. This article explains what evaluations doctors perform before the procedure, which groups of people need careful assessment, as well as post-treatment care focus and warning signs that require immediate medical attention.
What evaluations will the doctor perform before undergoing TAME?
The evaluation is divided into four parts. First is history and symptoms: the nature, location, and duration of pain, past diseases and surgical history, current medications, and family medical history. Second is physical examination: posture, gait, range of motion, muscle strength, and neurological reflexes, used to identify possible sources of pain. Third is imaging studies: X-ray, computed tomography (CT), or MRI, to observe changes in bones, joints, and soft tissues, confirming the cause of pain and the potential locations of abnormal blood vessels. Fourth is blood tests: mainly to confirm kidney function and coagulation function, as these two will directly affect the choice and arrangement of treatment options.
If you have other systemic diseases such as immune system disorders, acute or chronic infections, please inform the doctor fully during the evaluation to be included in the comprehensive assessment.
Who is not suitable or needs careful evaluation?
Four groups of people require particularly careful evaluation. First, those allergic to X-ray contrast agents or therapeutic agents.
Second, those with significantly impaired kidney function, as catheter-based C-TAME requires the use of contrast agents during the procedure. Patients in these two categories can discuss with their doctors whether simplified s-TAME, which does not require contrast agents, is a feasible path.
Third, those currently taking anticoagulant or antiplatelet drugs. These medications affect the risk of bleeding. Whether and how to adjust them should be determined by the doctor based on your original disease and treatment plan. Do not stop taking the medication on your own, as self-discontinuation may pose risks to controlling the original disease.
Fourth, those whose pain location is too close to major blood vessels of the brain or spine. The risk of blood vessel pathways in these areas is higher, and TAME intervention is generally not recommended.
It should be noted that "careful evaluation" does not mean it absolutely cannot be performed, but rather that the doctor needs to confirm the risk and feasibility for each of these situations before a treatment decision can be made.
Who performs the treatment?
TAME is an angiographically guided catheter intervention, performed under image guidance by a physician experienced in catheter intervention: a microcatheter is used to deliver embolization medication to the verified location of abnormal blood vessels on images for selective embolization. Clarus Clinic's C-TAME utilizes the GE OEC 3D mobile C-arm with cone-beam CT (3D tomography) function to obtain intraoperative three-dimensional images.
What should I pay attention to after the procedure?
The focus of post-treatment care is on the puncture site: apply appropriate pressure to stop bleeding and keep it dry to reduce the risk of bleeding and infection. It is recommended to avoid lifting heavy objects or weight-bearing activities for one to two weeks after the procedure to reduce pressure on the puncture site and allow the wound to heal smoothly. The actual activity restrictions and recovery plan will be explained by the doctor before and after the treatment.
What conditions may occur after treatment? In what situations should I seek immediate medical attention?
A small number of patients may experience local skin changes, hematoma formed by bleeding around the artery, or temporary redness and numbness/tingling at the treatment site after the procedure. Most of these conditions will gradually improve within a month, and you can confirm the recovery progress with your doctor during follow-up visits.
However, please seek medical attention immediately in the following situations: numbness, coldness, or obvious discomfort in the limbs; continuous bleeding at the puncture site, or an expanding area of bruising. When seeking medical attention, please inform the physician that you have undergone arterial puncture and abnormal blood vessel embolization treatment for correct diagnosis and management.
How do I evaluate if I am a suitable candidate?
If your pain has persisted for more than three months and conservative treatment has shown limited efficacy, you can conduct a preliminary pre-evaluation via LINE. Please bring past imaging data (X-rays, MRI, ultrasound), treatment records, and your current medication list to your appointment. The doctor will confirm suitability based on the evaluation process mentioned above, and then discuss whether TAME or other treatment options are appropriate.
Written by: Dr. Ping-Sheng Lu
Professional review: Dr. Ping-Sheng Lu 2026/07/25
Disclaimer: This article is for health educational purposes only and cannot replace doctor's diagnosis and treatment advice. The suitability of any treatment must be evaluated and decided by a physician.
References:
Okuno Y, Korchi AM, Shinjo T, Kato S, Kaneko T. Midterm clinical outcomes and MR imaging changes after transcatheter arterial embolization as a treatment for mild to moderate radiographic knee osteoarthritis resistant to conservative treatment. J Vasc Interv Radiol. 2017;28(7):995–1002.（PubMed：28365171）
