Overview
- Formation of dural arteriovenous fistula in the brain
Dural arteriovenous fistula (dAVF) Open pop-up dialog
Dural arteriovenous fistulas (dAVF) are abnormal connections between an artery and a vein in the hard lining of the brain or spinal cord (dura). Abnormal passages between arteries and veins (arteriovenous fistulas) can occur in the brain, spinal cord, or other areas of your body. - Dural FVA usually appears later in life and is usually not genetically transmitted. Children are more likely not to develop dAVF just because their parents did.
- Although some dAVFs arise from identifiable causes, it is believed that dAVFs that involve large veins in the brain usually develop due to a narrowing or blockage of one of the venous sinuses in the brain, which normally carry circulating blood. from the brain to the heart. Dural arteriovenous fistulas treatment in hyderabad
Symptoms
- Some people with dAVF may not have symptoms. The obvious symptoms, however, can be characterized as aggressive or mild.
- The aggressive symptoms of dAVF may be due to either bleeding in the brain (intracerebral hemorrhage) or the neurological effects of non-hemorrhagic neurological deficits (NHND).
- Bleeding in the brain often causes a sudden onset of headaches with varying degrees of neurological disturbance related to the location and size of the bleeding.
- In contrast, NHND typically grows more slowly over days or even weeks, and typically produces a range of symptoms related to its location. These aggressive symptoms can include seizures, speech or language problems, facial pain, dementia, parkinsonism, coordination problems, burning or tingling, weakness, listlessness, growth retardation, and pain. symptoms of increased pressure such as headache, nausea and vomiting.
- Mild symptoms of dAVF can include both hearing problems (often a sound behind the ear, also known as pulsating tinnitus) and vision problems such as blurred vision, swelling, swelling of the eyes, ocular paralysis and cavernous sinus syndrome. Dural arteriovenous fistulas treatment in hyderabad
In rare cases, progressive dementia can occur due to high blood pressure.
causes
Most dural arteriovenous fistulas do not have a specific origin, although some can be attributed to identifiable causes such as head trauma, infections, previous brain surgeries, or tumors. Most authorities believe that dAVFs, which involve the largest veins in the brain, are usually caused by a narrowing or progressive blockage of one of the venous sinuses in the brain, which carries blood from the brain to the heart. Dural arteriovenous fistulas treatment in hyderabad
Risk factors
- Genetic risk factors for dAVF include those that predispose to venous thrombosis, such as bleeding disorders that increase the risk of sinus occlusion.
- Most often, dAVF affects people in their late fifties (around 50 to 60 years old). However, DAVF can also occur in younger age groups, including children.
- Recent evidence suggests that benign meningeal tumors may also be associated with the development of dAVF.