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Vascular dementia is a common type of dementia caused by conditions that damage the blood vessels in the brain or interfere with proper blood flow and oxygen delivery to the brain.
Vasculitis is a group of rare conditions that can occur when you have swelling in the walls of your blood vessels. This can lead to serious health problems.
Venous thromboembolism is a condition in which you have blood clots in your veins. The blood clots can block blood flow to your lungs (called a pulmonary embolism). A deep vein thrombosis (DVT) occurs when a blood clot form in a deep vein, usually in the leg.
A ventilator is a machine that blows air — or air with extra oxygen — into the lungs. You may need to be put on a ventilator if you have a condition that makes it very hard for you to breathe.
Vitamin B12–Deficiency Anemia
Vitamin B12-deficiency anemia is a condition in which the body can't make enough healthy red blood cells because it doesn't have enough vitamin B12.
Wolff-Parkinson-White syndrome is a problem with the heart’s electrical system that controls the heartbeat that can make the heart beat too quickly or with an irregular rhythm.