Pathophysiology
Clinical meaning
Inflammation leads to upregulation of MMPs which degrade elastin and collagen in the aortic media. This structural weakening, combined with LaPlace's Law (Wall Tension = Pressure x Radius), creates a cycle of dilation. Rupture occurs when wall stress exceeds tensile strength. Connect AAA: Pathogenesis & Management to bedside cues you will reassess first: vitals trends, work of breathing, perfusion, mentation, and pain or ischemic equivalents when relevant. Boards reward recognizing when subtle instability outweighs reassurance, then selecting nursing actions that protect airway, circulation, and neurologic status before routine tasks.