Who should get it: men 65 to 75 who have ever smoked (a hundred cigarettes lifetime counts). That's the group the trials enrolled and the one with the strongest recommendation behind it 1. Never-smoking men that age: optional, ask a doctor. Women, or anyone under 65: not routinely, with one exception. A parent, sibling, or child who had an aortic aneurysm raises your own odds to roughly one in seven, so ask sooner; this applies to women too 2.
The aorta carries blood down from the heart through the belly. With age and smoking, a stretch of it can slowly balloon past about 3 centimetres, thinning the wall. You feel nothing while it grows, which is why a scan beats waiting for a symptom. An ultrasound reads the diameter to the millimetre and catches a real aneurysm more than 95% of the time 3.
Most men scanned don't have one; prevalence in older ever-smokers is around two to four percent 1. For the small share who do, catching it early trades a risky emergency for a planned operation: screened men are about half as likely to die from a ruptured aneurysm 4, and the benefit held over thirteen years 5.
Start with one thing: ask your doctor for an abdominal aortic aneurysm ultrasound.
The fine print โ when to skip it, and what people get wrong
"I need it every few years." No. One clean scan at 65 is a result for life; aortas don't start ballooning at 78 if they were fine at 65.
"If they find something, I'll need surgery." Most found aneurysms are small and just get watched. Repair only happens near 5.5 cm, which most people in surveillance never reach.
"My doctor would feel it." A hand on the belly misses small and medium ones almost every time. It's no substitute for the scan.
The main way this fails is not getting scanned: fewer than half of eligible US men use the benefit, mostly from friction, not refusal.
If a small aneurysm is found, treat the yearly rescans like an appointment that doesn't move; missing them is how one presents as a rupture instead. Controlled blood pressure helps, and flag the aneurysm before any fluoroquinolone antibiotic, a class linked to aortic tears.
Around one in ten men in surveillance report real anxiety about a bulge they're only watching 6. If that's you, tell your doctor; it's a known harm of the pathway, not a personal failure.
- 1USPSTF (2019). Screening for Abdominal Aortic Aneurysm: US Preventive Services Task Force Recommendation Statement. JAMA. link
- 2Chaikof EL, Dalman RL, Eskandari MK, et al. (2018). The Society for Vascular Surgery practice guidelines on the care of patients with an abdominal aortic aneurysm. Journal of Vascular Surgery. link
- 3Guirguis-Blake JM, Beil TL, Senger CA, Coppola EL (2019). Primary Care Screening for Abdominal Aortic Aneurysm: Updated Evidence Report and Systematic Review for the US Preventive Services Task Force. JAMA. link
- 4Cosford PA, Leng GC (2007). Screening for abdominal aortic aneurysm. Cochrane Database of Systematic Reviews. link
- 5Thompson SG, Ashton HA, Gao L, et al. (2012). Final follow-up of the Multicentre Aneurysm Screening Study (MASS) randomized trial of abdominal aortic aneurysm screening. British Journal of Surgery. link
- 6Johansson M, Zahl PH, Siersma V, Jorgensen KJ, Marklund B, Brodersen J (2018). Benefits and harms of screening men for abdominal aortic aneurysm in Sweden: a registry-based cohort study. Lancet. link
Related in the handbook (7)
- โ If you have an aortic aneurysm, flag it before a fluoroquinolone; the class is linked to aortic tears and usually has alternatives.
- โ Smoking is the single biggest driver of an aortic aneurysm โ if you've ever smoked, that's exactly why this scan exists.
- โ Same logic as cancer screening: a quick scan at the right age catches a silent killer while it's still fixable.
- โ This one-time scan slots into the same age-triggered rhythm as your other preventive checks.
- โ An aneurysm is atherosclerosis in the aorta's own wall. The particle count that drives plaque drives this too โ worth knowing yours.
- โ Same plumbing, different spot. If your aorta bulges from years of plaque, a calcium scan shows what the heart arteries are doing too.
- โ If your smoking history qualifies you for this yearly scan, you likely also qualify for a one-time AAA ultrasound. Ask about both.
Abdominal Aortic Aneurysm Screening
Free under Medicare for the people who need it most. Self-pay runs about $100-300.
One visit, ten minutes, no needles. Done once, done for life.
Four big randomised trials and decades of national-programme data. Guideline-backed, settled in its target population.
A single ultrasound at 65 catches a silent killer before it kills. Cuts deaths from burst aortas roughly in half in older men who have ever smoked.