Does aspirin prevent blood clots?

Your chance of having another DVT or PE depends on the circumstances surrounding your first DVT or PE. If your blood clot occurred as a result of surgery or trauma, and the risk factor was considered temporary, then your risk of having another DVT or PE may be very low. If your blood clot occurred spontaneously, without any risk factors being present, your risk of another clot is 30 percent over the next ten years. Obviously, your risk of having another DVT or PE will be higher if you have thrombophilia or cancer.

Sometimes, an ultrasound examination can provide information that can help the physician or anticoagulation clinic predict whether another blood clot will occur. Normal veins are less likely to develop recurrent clots than veins that contain residual clots.

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