Cancer treatments for the breast cancer, may increase the risk of blood clots, include:
the targeted therapy bevacizumab
the hormone therapy tamoxifen.
As cells are destroyed by chemotherapy they can release substances that cause blood clots. Both surgery and chemotherapy can damage the walls of blood vessels, which can increase the risk of a blood clot developing.
A central line is a long intravenous line that is inserted into a large vein and can be used to give chemotherapy or other drugs. It’s possible for a blood clot to form in a vein at the tip of the line. Drugs may be given to help prevent this.
For some people, their cancer treatment makes them feel very tired and weak. This means they’re not as physically active. If you have surgery it may be difficult to get out of bed or to move around normally at first. Inactivity increases the risk of a blood clot as the normal action of the leg muscles helps return the blood back towards the heart.
Inactivity on long journeys such as long flights can also increase the risk of a blood clot. You can find out more about how to reduce your risk of DVT when travelling on the NHS Choices website.