What is an aneurysm?

An aneurysm is correctly defined as a bulging, weakened area in an artery wall. This condition occurs when the arterial wall becomes weak due to factors such as high blood pressure, cholesterol, or genetic predisposition. As a result, the section of the artery can widen or bulge, which increases the risk of rupture. If an aneurysm ruptures, it can lead to severe internal bleeding and can be life-threatening, making early detection and management essential. Understanding this definition is crucial as it highlights the structural changes in blood vessels that can lead to serious cardiovascular complications.

The other options pertain to different medical conditions: a type of blood clot refers specifically to thrombosis, a rapid heartbeat condition is indicative of arrhythmia, and inflammation of the artery would be classified under arteritis or vasculitis. These conditions involve different mechanisms and are treated through varied therapeutic approaches. Recognizing an aneurysm's distinct characteristics helps differentiate it from other vascular diseases and underscores the importance of comprehensive cardiovascular health awareness.