Which key feature characterizes Ischemic CVA?

The correct choice highlights that ischemic cerebrovascular accidents (CVA), commonly known as strokes, represent the most prevalent type of stroke, accounting for the majority of stroke cases. This occurs when blood flow to a part of the brain is interrupted due to a blockage, such as a clot. The high incidence of ischemic strokes underscores the importance of identifying risk factors like hypertension, diabetes, and atrial fibrillation, which can contribute to their occurrence. Understanding that ischemic CVA is the most common type is crucial for recognizing its significance in public health and clinical practice.

In contrast, ischemic strokes can occur in people of various ages and are not limited to older adults; thus, stating that they are rare in older adults is incorrect. The onset of an ischemic stroke is typically sudden rather than gradual or subtle, distinguishing it from other stroke types. Additionally, while a history of prior strokes can influence an individual's risk, ischemic CVA can occur independently without any prior stroke having taken place.