Which of the following symptoms usually signifies rapid expansion and impending rupture of an abdominal aortic aneurysm?
A. Abdominal pain
B. Absent pedal pulses
C. Angina
D. Lower back pain
Correct Answer: D. Lower back pain
Lower back pain results from the expansion of an aneurysm. The expansion applies pressure in the abdominal cavity, and the pain is referred to the lower back.
Option A: Abdominal pain is the most common symptom resulting from impaired circulation. The most typical manifestation of rupture is abdominal or back pain with a pulsatile abdominal mass. However, the symptoms may be vague, and the abdominal mass may be missed.
Option B: Absent pedal pulses are a sign of no circulation and would occur after a ruptured aneurysm or in peripheral vascular disease.
Option C: Angina is associated with atherosclerosis of the coronary arteries.