Video: DVT Treatment Window: When Blood Thinners May Not Be Enough

A DVT is a blood clot in the deep veins of the leg. For many patients, blood thinners are important. But in selected patients, especially those with a large clot high up in the thigh or pelvis, blood thinners may not be the whole answer. If I see that patient early, there may be a window to actively treat the clot: to remove the clot, open the blocked vein or treat an underlying narrowing such as iliac vein compression. This can involve catheter-directed treatment, thrombectomy, venoplasty or stenting, and this all depends on the anatomy and the patient.

The reason this matters is that some patients who are not assessed early come back months later with a different problem. The clot may have scarred the vein. The leg may remain swollen, heavy, painful or dark around the ankle, or they may even develop ulcers. This is post-thrombotic syndrome. At that stage, we are no longer just treating a fresh clot. We are asking: is the vein permanently blocked? Is there iliac vein narrowing? Is there reflux? Is there a problem that can still be improved with specialist venous treatment?

So the message is simple. If you have a new DVT, especially a very swollen, painful leg, get assessed early. There may be a time-sensitive treatment option. If you have had a DVT months or years ago and your leg never recovered properly, please do not assume nothing can be done. It may still be worth a vascular review.