Aortic Aneurysm — Rupture and Acute Presentations

A 68-year-old man with a history of hypertension presents to the emergency department with sudden-onset severe back pain, hypotension (BP 85/55 mmHg), and a pulsatile abdominal mass. He is diaphoretic and in severe distress. What is the most appropriate immediate next step in management?

A 72-year-old man with known hypertension and a 5.2 cm infrarenal abdominal aortic aneurysm (AAA) presents to the outpatient clinic for routine follow-up. He is asymptomatic, vital signs are stable, and abdominal examination is unremarkable. What is the most appropriate next step in management?

What is the mortality rate of ruptured abdominal aortic aneurysm (rAAA) in patients who reach the hospital alive?

A 68-year-old male with hypertension presents to the emergency department with sudden-onset severe back pain, hypotension (BP 85/50 mmHg), and a pulsatile abdominal mass. Clinical suspicion for ruptured abdominal aortic aneurysm (AAA) is high. What is the investigation of choice to confirm the diagnosis and guide immediate management?

A 72-year-old hypertensive man with chronic obstructive pulmonary disease and a 40-pack-year smoking history is admitted with acute-onset severe abdominal and back pain. A ruptured abdominal aortic aneurysm is confirmed on CT angiography. What is the most common underlying cause of abdominal aortic aneurysm in this patient population?