'Venous Stroke' or 'Cerebral Venous Sinus Thrombosis' is caused by blood clots blocking the veins in the brain. The veins in the brain drain blood from the brain into the heart. When the veins are blocked, the blood cannot drain normally and causes back pressure in the brain leading to all the symptoms. Although venous strokes account for about 1% of all the strokes across all age groups and about 3/4th of all the strokes in people younger than 50 years.
Any predisposing condition that leads to increased tendency for blood clot formation, can cause venous stroke. The stroke occurs across all age groups, from infants , pregnant women, cancer patients, patients with blood disorders to elderly patients. Women tend to be more often affected than men.
CT or MRI scans are required to diagnose the stroke. They help to identify the location of stroke and its severity. Occasionally, a cerebral angiogram may be done to confirm the diagnosis. Blood tests may be required to identify the predisposing condition.
ter. It is the mainstay of treatment in all the patients with venous stroke. In patients with very high pressure in the head, a surgery may be needed to remove a part of the skull. In rare cases, an angiogram and mechanical retrieval of the clot may be needed.
In general, the outcome of venous stroke is better than that of arterial stroke if the stroke is treated on time and the predisposing condition is identified and treated. complete recovery is possible in up to 80% of the patients.
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