At this time, preventing arteriovenous malformation (AVM) is not possible. Doctors believe it is most often a congenital condition and may have links to genetic mutations in chromosome 7; however, the exact process is still being researched. Injury to the central nervous system may cause AVMs to form later in life. High blood pressure in the AVM can lead to rupture, so people known to have the condition should be even more careful about avoiding hypertension. In women with an AVM, the changes in blood pressure and hormones may aggravate the condition causing symptoms to appear. While doctors cannot predict accurately if and when an AVM may hemorrhage, careful and consistent monitoring are important to prevention of arteriovenous malformation rupture in people with the condition.