What condition can be a direct result of a blocked artery in the brain?

A blocked artery in the brain directly leads to a stroke, which occurs when the blood supply to a part of the brain is interrupted or reduced. This blockage can be caused by a thrombosis, where a blood clot forms in an artery supplying blood to the brain, or by an embolism, where a clot travels from another part of the body to the brain. The lack of blood flow deprives brain cells of oxygen and nutrients, potentially causing damage or death to those cells, leading to the symptoms associated with a stroke.

In contrast, the other conditions mentioned are not a direct result of a blocked artery in the brain. A heart attack relates to blocked arteries in the heart, congestive heart failure is a condition where the heart cannot pump effectively, and pulmonary hypertension involves high blood pressure in the arteries that supply the lungs, which are not directly connected to a cerebral blockage.