Ontario Clinical Practice Exam

The correct answer is ischemic, as this type of cerebrovascular accident (CVA) is primarily caused by a blockage in the blood vessels supplying blood to the brain. Ischemic strokes occur due to a thrombus (a blood clot that forms in the blood vessel) or an embolism (a clot that forms elsewhere in the body and travels to the brain). The blockage restricts blood flow and results in tissue damage due to insufficient oxygen and nutrients reaching the brain cells.

In contrast, hemorrhagic strokes occur when a blood vessel in the brain ruptures, leading to bleeding within or around the brain. Transient ischemic attacks (TIAs), sometimes referred to as "mini-strokes," are temporary blockages that typically resolve quickly and do not result in lasting damage. Reversible ischemic neurological deficits are conditions that also reflect temporary symptoms without significant permanent injury to the brain. Understanding the distinctions among these types of strokes is crucial in recognizing their underlying mechanisms and guiding appropriate medical responses.