Thoracic Aortic Aneurysm

A thoracic aortic aneurysm is an enlarged, weakened portion of the aorta in the chest. Many patients have no symptoms until the aneurysm enlarges rapidly or a dissection or rupture occurs. A normal-looking patient can therefore still require careful blood-pressure management and scheduled imaging. The clinical question is not simply, “How large is it?” Urgency depends on the aortic segment, the underlying cause, the rate of enlargement, and whether new symptoms have appeared. Sudden severe chest or back pain, hypotension, syncope, a new neurologic deficit, or a new diastolic murmur changes the problem from surveillance to possible acute aortic catastrophe. Within the RPN’s assigned scope and local policy, the priority is rapid assessment and immediate escalation rather than waiting for the next routine scan.